Maritime Location Systems - Radio transmitters and receivers for radio links in maritime radio location systems operating in the 9 GHz frequency band (X band)

The present document specifies technical characteristics and methods of measurements for radiolocation equipment
with the following characteristics:
• intended to operate in maritime dynamic positioning systems functioning with full duplex links having a
duplex separation of 30 MHz;
• operating in the 9 GHz frequency band;
• with an integral antenna.

Pomorski lokacijski sistemi - Radijski oddajniki in sprejemniki za radijske povezave v pomorskih radijskih lokacijskih sistemih, ki delujejo v frekvenčnem pasu 9 GHz (pas X)

General Information

Status
Published
Public Enquiry End Date
31-Oct-2020
Publication Date
04-May-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Apr-2021
Due Date
01-Jul-2021
Completion Date
05-May-2021

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SLOVENSKI STANDARD
SIST EN 303 746 V1.1.1:2021
01-junij-2021
Pomorski lokacijski sistemi - Radijski oddajniki in sprejemniki za radijske
povezave v pomorskih radijskih lokacijskih sistemih, ki delujejo v frekvenčnem
pasu 9 GHz (pas X)

Maritime Location Systems - Radio transmitters and receivers for radio links in maritime

radio location systems operating in the 9 GHz frequency band (X band)
Ta slovenski standard je istoveten z: ETSI EN 303 746 V1.1.1 (2021-04)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
SIST EN 303 746 V1.1.1:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 303 746 V1.1.1:2021
---------------------- Page: 2 ----------------------
SIST EN 303 746 V1.1.1:2021
ETSI EN 303 746 V1.1.1 (2021-04)
EUROPEAN STANDARD
Maritime Location Systems;
Radio transmitters and receivers for radio links
in maritime radio location systems
operating in the 9 GHz frequency band (X band)
---------------------- Page: 3 ----------------------
SIST EN 303 746 V1.1.1:2021
2 ETSI EN 303 746 V1.1.1 (2021-04)
Reference
DEN/ERM-TGMAR-611
Keywords
location, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Notice of disclaimer & limitation of liability

The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of

experience to understand and interpret its content in accordance with generally accepted engineering or

other professional standard and applicable regulations.

No recommendation as to products and services or vendors is made or should be implied.

In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not

limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property

rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages

for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use

of or inability to use the software.
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2021.
All rights reserved.
ETSI
---------------------- Page: 4 ----------------------
SIST EN 303 746 V1.1.1:2021
3 ETSI EN 303 746 V1.1.1 (2021-04)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

Introduction ........................................................................................................................................................ 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 7

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 8

4 Technical requirements ............................................................................................................................ 9

4.1 Environmental profile ......................................................................................................................................... 9

4.2 Construction ....................................................................................................................................................... 9

4.3 Controls and indicators ....................................................................................................................................... 9

4.4 Safety precautions .............................................................................................................................................. 9

4.5 Labelling........................................................................................................................................................... 10

4.6 Frequencies....................................................................................................................................................... 10

4.7 Polarization....................................................................................................................................................... 10

4.8 Transceiver data interface................................................................................................................................. 10

5 General conditions of measurements ..................................................................................................... 10

5.1 Test site and general arrangements for measurements ..................................................................................... 10

5.2 General ............................................................................................................................................................. 10

5.3 Impedance ........................................................................................................................................................ 11

5.4 Tests of equipment with a notch filter .............................................................................................................. 11

5.5 Facilities for access .......................................................................................................................................... 11

5.5.1 Coupling arrangements ............................................................................................................................... 11

5.6 Modes of operation of the transmitter .............................................................................................................. 11

6 Test conditions ....................................................................................................................................... 11

6.1 General ............................................................................................................................................................. 11

6.2 Test signals ....................................................................................................................................................... 11

6.3 Normal test conditions ...................................................................................................................................... 11

6.3.1 Normal temperature and humidity .............................................................................................................. 11

6.3.2 Normal power source .................................................................................................................................. 12

6.3.2.1 Mains voltage and frequency ................................................................................................................ 12

6.3.2.2 Battery power source............................................................................................................................. 12

6.3.2.3 Other power sources .............................................................................................................................. 12

6.4 Extreme test conditions .................................................................................................................................... 12

6.4.1 General requirements .................................................................................................................................. 12

6.4.2 Extreme temperatures ................................................................................................................................. 12

6.4.3 Extreme values of test power source .......................................................................................................... 12

6.4.3.1 Mains voltage and frequency ................................................................................................................ 12

6.4.3.2 Battery power source............................................................................................................................. 12

6.4.3.3 Other power sources .............................................................................................................................. 12

6.4.4 Procedure for tests at extreme temperatures ............................................................................................... 12

7 Environmental tests ................................................................................................................................ 13

7.1 General requirements ....................................................................................................................................... 13

7.2 Procedure .......................................................................................................................................................... 13

7.3 Performance check ........................................................................................................................................... 13

7.4 Vibration tests .................................................................................................................................................. 13

7.4.1 Purpose ....................................................................................................................................................... 13

ETSI
---------------------- Page: 5 ----------------------
SIST EN 303 746 V1.1.1:2021
4 ETSI EN 303 746 V1.1.1 (2021-04)

7.4.2 Method of measurement ............................................................................................................................. 13

7.4.3 Requirement ................................................................................................................................................ 14

7.5 Damp heat ........................................................................................................................................................ 14

7.5.1 Purpose ....................................................................................................................................................... 14

7.5.2 Method of measurement ............................................................................................................................. 14

7.5.3 Requirement ................................................................................................................................................ 14

8 Transmitter ............................................................................................................................................. 14

8.1 Frequency error ................................................................................................................................................ 14

8.1.1 Definition .................................................................................................................................................... 14

8.1.2 Method of measurement ............................................................................................................................. 14

8.1.3 Limit ........................................................................................................................................................... 14

8.2 Transmitter EIRP .............................................................................................................................................. 14

8.2.1 Definition .................................................................................................................................................... 14

8.2.2 Method of measurement ............................................................................................................................. 15

8.2.3 Limit ........................................................................................................................................................... 15

8.3 Transmitter B bandwidth ........................................................................................................................... 15

-40 dB

8.3.1 Definition .................................................................................................................................................... 15

8.3.2 Method of measurement ............................................................................................................................. 15

8.3.3 Limit ........................................................................................................................................................... 15

8.4 Transmitter out-of-band emissions ................................................................................................................... 15

8.4.1 Definition .................................................................................................................................................... 15

8.4.2 Method of measurement ............................................................................................................................. 15

8.4.3 Limit ........................................................................................................................................................... 16

8.5 Transmitter spurious emissions ........................................................................................................................ 16

8.5.1 Definition .................................................................................................................................................... 16

8.5.2 Method of measurement ............................................................................................................................. 16

8.5.3 Limit ........................................................................................................................................................... 17

8.6 Standby mode emissions .................................................................................................................................. 17

8.6.1 Definition .................................................................................................................................................... 17

8.6.2 Method of measurement ............................................................................................................................. 17

8.6.3 Limits .......................................................................................................................................................... 17

9 Receiver .................................................................................................................................................. 17

9.1 Maximum usable sensitivity ............................................................................................................................. 17

9.1.1 Definition .................................................................................................................................................... 17

9.1.2 Method of measurement ............................................................................................................................. 17

9.1.3 Limit ........................................................................................................................................................... 17

9.2 Co-channel rejection......................................................................................................................................... 18

9.2.1 Definition .................................................................................................................................................... 18

9.2.2 Method of measurement ............................................................................................................................. 18

9.2.3 Limit ........................................................................................................................................................... 18

9.3 Adjacent channel selectivity ............................................................................................................................. 18

9.3.1 Definition .................................................................................................................................................... 18

9.3.2 Method of measurement ............................................................................................................................. 18

9.3.3 Limit ........................................................................................................................................................... 19

9.4 Blocking ........................................................................................................................................................... 19

9.4.1 Definition .................................................................................................................................................... 19

9.4.2 Method of measurement ............................................................................................................................. 19

9.4.3 Limit ........................................................................................................................................................... 19

10 Testing for compliance with technical requirements .............................................................................. 19

10.1 Environmental conditions for testing ............................................................................................................... 19

10.2 Interpretation of the measurement results ........................................................................................................ 20

History .............................................................................................................................................................. 21

ETSI
---------------------- Page: 6 ----------------------
SIST EN 303 746 V1.1.1:2021
5 ETSI EN 303 746 V1.1.1 (2021-04)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations

pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be

found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to

ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the

ETSI Web server (https://ipr.etsi.org/).

Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,

including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not

referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,

essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP

Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the

oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.

Foreword

This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and

Radio spectrum Matters (ERM).
National transposition dates
Date of adoption of this EN: 16 April 2021
Date of latest announcement of this EN (doa): 31 July 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2022
Date of withdrawal of any conflicting National Standard (dow): 31 January 2022
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 7 ----------------------
SIST EN 303 746 V1.1.1:2021
6 ETSI EN 303 746 V1.1.1 (2021-04)
Introduction

The present document applies to systems utilizing radio links between platforms and vessels for dynamic positioning of

vessels engaged in coordinated maritime activities.
ETSI
---------------------- Page: 8 ----------------------
SIST EN 303 746 V1.1.1:2021
7 ETSI EN 303 746 V1.1.1 (2021-04)
1 Scope

The present document specifies technical characteristics and methods of measurements for radiolocation equipment

with the following characteristics:

• intended to operate in maritime dynamic positioning systems functioning with full duplex links having a

duplex separation of 30 MHz;
• operating in the 9 GHz frequency band;
• with an integral antenna.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-T E.161 (02-2001): "Arrangement of digits, letters and symbols on

telephones and other devices that can be used for gaining access to a telephone network".

[2] ISO 25862:2019: "Ships and marine technology -- Marine magnetic compasses, binnacles and

azimuth reading devices".

[3] ETSI TS 103 052 (V1.1.1) (03-2011): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Radiated measurement methods and general arrangements for test sites up to 100 GHz".

[4] ERC Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[5] ISO 7010:2019: "Graphical symbols - Safety colours and safety signs - Registered safety signs".

2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.
Not applicable.
ETSI
---------------------- Page: 9 ----------------------
SIST EN 303 746 V1.1.1:2021
8 ETSI EN 303 746 V1.1.1 (2021-04)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B Bandwidth
dBm Level (dB) relative to 1 mW
dBpp Level (dB) below peak power
dBµV Level (dB) relative to 1 µV/m
f Frequency
m Metre
ppm Parts per million (10 )
Q Q factor is a resonance parameter
s Second
V Volt
W Watt
Ω Ohm
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
dc direct current
EIRP Equivalent Isotropically Radiated Power
EN European Norm
ERC European Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
IPR Intellectual Property Right
ISO International Organization for Standardization

ITU-T International Telecommunication Union - Telecommunication standardization sector

PEP Peak Envelope Power
pp peak power
RF Radio Frequency
Rx Receiver
SR Special Report
TS Technical Specification
Tx Transmitter
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 10 ----------------------
SIST EN 303 746 V1.1.1:2021
9 ETSI EN 303 746 V1.1.1 (2021-04)
4 Technical requirements
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document.
4.2 Construction

The mechanical and electrical construction and finish of the equipment shall conform in all respects to good engineering

practice, and the equipment shall be suitable for use on board ships.

All controls shall be of sufficient size to enable the usual control functions to be easily performed and the number of

controls should be the minimum necessary for simple and satisfactory operation.

For the purpose of conformance testing, relevant technical documentation shall be supplied with the equipment.

The equipment shall be capable of operating on two full duplex channels.

It shall not be possible to transmit while any frequency synthesizer used within the transmitter is out of lock.

4.3 Controls and indicators

The equipment shall have a frequency selector and shall indicate the operating frequency at which the installation is set

and this shall be legible irrespective of the external lighting conditions.

Where an input panel on the equipment for entering digit 0 to digit 9 is provided, this shall conform to Recommendation

ITU-T E.161 [1].
The equipment shall have the following additional controls and indicators:

• a means for reducing the brightness of the equipment illumination to almost zero;

• an on/off switch for the entire installat
...

ETSI EN 303 746 V1.1.1 (2021-04)
EUROPEAN STANDARD
Maritime Location Systems;
Radio transmitters and receivers for radio links
in maritime radio location systems
operating in the 9 GHz frequency band (X band)
---------------------- Page: 1 ----------------------
2 ETSI EN 303 746 V1.1.1 (2021-04)
Reference
DEN/ERM-TGMAR-611
Keywords
location, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Notice of disclaimer & limitation of liability

The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of

experience to understand and interpret its content in accordance with generally accepted engineering or

other professional standard and applicable regulations.

No recommendation as to products and services or vendors is made or should be implied.

In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not

limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property

rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages

for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use

of or inability to use the software.
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2021.
All rights reserved.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 303 746 V1.1.1 (2021-04)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

Introduction ........................................................................................................................................................ 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 7

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 8

4 Technical requirements ............................................................................................................................ 9

4.1 Environmental profile ......................................................................................................................................... 9

4.2 Construction ....................................................................................................................................................... 9

4.3 Controls and indicators ....................................................................................................................................... 9

4.4 Safety precautions .............................................................................................................................................. 9

4.5 Labelling........................................................................................................................................................... 10

4.6 Frequencies....................................................................................................................................................... 10

4.7 Polarization....................................................................................................................................................... 10

4.8 Transceiver data interface................................................................................................................................. 10

5 General conditions of measurements ..................................................................................................... 10

5.1 Test site and general arrangements for measurements ..................................................................................... 10

5.2 General ............................................................................................................................................................. 10

5.3 Impedance ........................................................................................................................................................ 11

5.4 Tests of equipment with a notch filter .............................................................................................................. 11

5.5 Facilities for access .......................................................................................................................................... 11

5.5.1 Coupling arrangements ............................................................................................................................... 11

5.6 Modes of operation of the transmitter .............................................................................................................. 11

6 Test conditions ....................................................................................................................................... 11

6.1 General ............................................................................................................................................................. 11

6.2 Test signals ....................................................................................................................................................... 11

6.3 Normal test conditions ...................................................................................................................................... 11

6.3.1 Normal temperature and humidity .............................................................................................................. 11

6.3.2 Normal power source .................................................................................................................................. 12

6.3.2.1 Mains voltage and frequency ................................................................................................................ 12

6.3.2.2 Battery power source............................................................................................................................. 12

6.3.2.3 Other power sources .............................................................................................................................. 12

6.4 Extreme test conditions .................................................................................................................................... 12

6.4.1 General requirements .................................................................................................................................. 12

6.4.2 Extreme temperatures ................................................................................................................................. 12

6.4.3 Extreme values of test power source .......................................................................................................... 12

6.4.3.1 Mains voltage and frequency ................................................................................................................ 12

6.4.3.2 Battery power source............................................................................................................................. 12

6.4.3.3 Other power sources .............................................................................................................................. 12

6.4.4 Procedure for tests at extreme temperatures ............................................................................................... 12

7 Environmental tests ................................................................................................................................ 13

7.1 General requirements ....................................................................................................................................... 13

7.2 Procedure .......................................................................................................................................................... 13

7.3 Performance check ........................................................................................................................................... 13

7.4 Vibration tests .................................................................................................................................................. 13

7.4.1 Purpose ....................................................................................................................................................... 13

ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 303 746 V1.1.1 (2021-04)

7.4.2 Method of measurement ............................................................................................................................. 13

7.4.3 Requirement ................................................................................................................................................ 14

7.5 Damp heat ........................................................................................................................................................ 14

7.5.1 Purpose ....................................................................................................................................................... 14

7.5.2 Method of measurement ............................................................................................................................. 14

7.5.3 Requirement ................................................................................................................................................ 14

8 Transmitter ............................................................................................................................................. 14

8.1 Frequency error ................................................................................................................................................ 14

8.1.1 Definition .................................................................................................................................................... 14

8.1.2 Method of measurement ............................................................................................................................. 14

8.1.3 Limit ........................................................................................................................................................... 14

8.2 Transmitter EIRP .............................................................................................................................................. 14

8.2.1 Definition .................................................................................................................................................... 14

8.2.2 Method of measurement ............................................................................................................................. 15

8.2.3 Limit ........................................................................................................................................................... 15

8.3 Transmitter B bandwidth ........................................................................................................................... 15

-40 dB

8.3.1 Definition .................................................................................................................................................... 15

8.3.2 Method of measurement ............................................................................................................................. 15

8.3.3 Limit ........................................................................................................................................................... 15

8.4 Transmitter out-of-band emissions ................................................................................................................... 15

8.4.1 Definition .................................................................................................................................................... 15

8.4.2 Method of measurement ............................................................................................................................. 15

8.4.3 Limit ........................................................................................................................................................... 16

8.5 Transmitter spurious emissions ........................................................................................................................ 16

8.5.1 Definition .................................................................................................................................................... 16

8.5.2 Method of measurement ............................................................................................................................. 16

8.5.3 Limit ........................................................................................................................................................... 17

8.6 Standby mode emissions .................................................................................................................................. 17

8.6.1 Definition .................................................................................................................................................... 17

8.6.2 Method of measurement ............................................................................................................................. 17

8.6.3 Limits .......................................................................................................................................................... 17

9 Receiver .................................................................................................................................................. 17

9.1 Maximum usable sensitivity ............................................................................................................................. 17

9.1.1 Definition .................................................................................................................................................... 17

9.1.2 Method of measurement ............................................................................................................................. 17

9.1.3 Limit ........................................................................................................................................................... 17

9.2 Co-channel rejection......................................................................................................................................... 18

9.2.1 Definition .................................................................................................................................................... 18

9.2.2 Method of measurement ............................................................................................................................. 18

9.2.3 Limit ........................................................................................................................................................... 18

9.3 Adjacent channel selectivity ............................................................................................................................. 18

9.3.1 Definition .................................................................................................................................................... 18

9.3.2 Method of measurement ............................................................................................................................. 18

9.3.3 Limit ........................................................................................................................................................... 19

9.4 Blocking ........................................................................................................................................................... 19

9.4.1 Definition .................................................................................................................................................... 19

9.4.2 Method of measurement ............................................................................................................................. 19

9.4.3 Limit ........................................................................................................................................................... 19

10 Testing for compliance with technical requirements .............................................................................. 19

10.1 Environmental conditions for testing ............................................................................................................... 19

10.2 Interpretation of the measurement results ........................................................................................................ 20

History .............................................................................................................................................................. 21

ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 303 746 V1.1.1 (2021-04)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations

pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be

found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to

ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the

ETSI Web server (https://ipr.etsi.org/).

Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,

including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not

referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,

essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP

Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the

oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.

Foreword

This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and

Radio spectrum Matters (ERM).
National transposition dates
Date of adoption of this EN: 16 April 2021
Date of latest announcement of this EN (doa): 31 July 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2022
Date of withdrawal of any conflicting National Standard (dow): 31 January 2022
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 303 746 V1.1.1 (2021-04)
Introduction

The present document applies to systems utilizing radio links between platforms and vessels for dynamic positioning of

vessels engaged in coordinated maritime activities.
ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 303 746 V1.1.1 (2021-04)
1 Scope

The present document specifies technical characteristics and methods of measurements for radiolocation equipment

with the following characteristics:

• intended to operate in maritime dynamic positioning systems functioning with full duplex links having a

duplex separation of 30 MHz;
• operating in the 9 GHz frequency band;
• with an integral antenna.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-T E.161 (02-2001): "Arrangement of digits, letters and symbols on

telephones and other devices that can be used for gaining access to a telephone network".

[2] ISO 25862:2019: "Ships and marine technology -- Marine magnetic compasses, binnacles and

azimuth reading devices".

[3] ETSI TS 103 052 (V1.1.1) (03-2011): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Radiated measurement methods and general arrangements for test sites up to 100 GHz".

[4] ERC Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[5] ISO 7010:2019: "Graphical symbols - Safety colours and safety signs - Registered safety signs".

2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.
Not applicable.
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 303 746 V1.1.1 (2021-04)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B Bandwidth
dBm Level (dB) relative to 1 mW
dBpp Level (dB) below peak power
dBµV Level (dB) relative to 1 µV/m
f Frequency
m Metre
ppm Parts per million (10 )
Q Q factor is a resonance parameter
s Second
V Volt
W Watt
Ω Ohm
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
dc direct current
EIRP Equivalent Isotropically Radiated Power
EN European Norm
ERC European Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
IPR Intellectual Property Right
ISO International Organization for Standardization

ITU-T International Telecommunication Union - Telecommunication standardization sector

PEP Peak Envelope Power
pp peak power
RF Radio Frequency
Rx Receiver
SR Special Report
TS Technical Specification
Tx Transmitter
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 303 746 V1.1.1 (2021-04)
4 Technical requirements
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document.
4.2 Construction

The mechanical and electrical construction and finish of the equipment shall conform in all respects to good engineering

practice, and the equipment shall be suitable for use on board ships.

All controls shall be of sufficient size to enable the usual control functions to be easily performed and the number of

controls should be the minimum necessary for simple and satisfactory operation.

For the purpose of conformance testing, relevant technical documentation shall be supplied with the equipment.

The equipment shall be capable of operating on two full duplex channels.

It shall not be possible to transmit while any frequency synthesizer used within the transmitter is out of lock.

4.3 Controls and indicators

The equipment shall have a frequency selector and shall indicate the operating frequency at which the installation is set

and this shall be legible irrespective of the external lighting conditions.

Where an input panel on the equipment for entering digit 0 to digit 9 is provided, this shall conform to Recommendation

ITU-T E.161 [1].
The equipment shall have the following additional controls and indicators:

• a means for reducing the brightness of the equipment illumination to almost zero;

• an on/off switch for the entire installation with a visual indication that the installation is in operation;

• a visual indication that the equipment is transmitting.
The equipment shall also meet the following requirements:

• the user shall not have access to any control which, if wrongly set, might impair the technical characteristics of

the equipment.
4.4 Safety precautions

Measures shall be taken to protect the equipment against the effects of overcurrent or overvoltage.

Measures shall be taken to prevent damage to the equipment if the electrical power source produces transient voltage

variations and to prevent any damage that might arise from an accidental reversal of polarity of the electrical power

source.
Means shall be provided for earthing exposed metallic parts of the equipment.

All components and wiring in which the dc or ac voltage (other than radio-frequency voltage) are generated, separately

or in combination , peak voltages in excess of 50 V shall be protected against any accidental access and shall be

automatically isolated from all electrical power sources if the protective covers are removed. Alternatively, the

equipment shall be constructed in such a way as to preve
...

Final draft ETSI EN 303 746 V1.1.1 (2021-02)
EUROPEAN STANDARD
Maritime Location Systems;
Radio transmitters and receivers for radio links
in maritime radio location systems
operating in the 9 GHz frequency band (X band)
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
Reference
DEN/ERM-TGMAR-611
Keywords
location, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

Introduction ........................................................................................................................................................ 5

1 Scope ........................................................................................................................................................ 6

2 References ................................................................................................................................................ 6

2.1 Normative references ......................................................................................................................................... 6

2.2 Informative references ........................................................................................................................................ 6

3 Definition of terms, symbols and abbreviations ....................................................................................... 7

3.1 Terms .................................................................................................................................................................. 7

3.2 Symbols .............................................................................................................................................................. 7

3.3 Abbreviations ..................................................................................................................................................... 7

4 Technical requirements ............................................................................................................................ 8

4.1 Environmental profile ......................................................................................................................................... 8

4.2 Construction ....................................................................................................................................................... 8

4.3 Controls and indicators ....................................................................................................................................... 8

4.4 Safety precautions .............................................................................................................................................. 8

4.5 Labelling............................................................................................................................................................. 9

4.6 Frequencies......................................................................................................................................................... 9

4.7 Polarization......................................................................................................................................................... 9

4.8 Transceiver data interface................................................................................................................................... 9

5 General conditions of measurements ....................................................................................................... 9

5.1 Test site and general arrangements for measurements ....................................................................................... 9

5.2 General ............................................................................................................................................................... 9

5.3 Impedance ........................................................................................................................................................ 10

5.4 Tests of equipment with a notch filter .............................................................................................................. 10

5.5 Facilities for access .......................................................................................................................................... 10

5.5.1 Coupling arrangements ............................................................................................................................... 10

5.6 Modes of operation of the transmitter .............................................................................................................. 10

6 Test conditions ....................................................................................................................................... 10

6.1 General ............................................................................................................................................................. 10

6.2 Test signals ....................................................................................................................................................... 10

6.3 Normal test conditions ...................................................................................................................................... 10

6.3.1 Normal temperature and humidity .............................................................................................................. 10

6.3.2 Normal power source .................................................................................................................................. 11

6.3.2.1 Mains voltage and frequency ................................................................................................................ 11

6.3.2.2 Battery power source............................................................................................................................. 11

6.3.2.3 Other power sources .............................................................................................................................. 11

6.4 Extreme test conditions .................................................................................................................................... 11

6.4.1 General requirements .................................................................................................................................. 11

6.4.2 Extreme temperatures ................................................................................................................................. 11

6.4.3 Extreme values of test power source .......................................................................................................... 11

6.4.3.1 Mains voltage and frequency ................................................................................................................ 11

6.4.3.2 Battery power source............................................................................................................................. 11

6.4.3.3 Other power sources .............................................................................................................................. 11

6.4.4 Procedure for tests at extreme temperatures ............................................................................................... 11

7 Environmental tests ................................................................................................................................ 12

7.1 General requirements ....................................................................................................................................... 12

7.2 Procedure .......................................................................................................................................................... 12

7.3 Performance check ........................................................................................................................................... 12

7.4 Vibration tests .................................................................................................................................................. 12

7.4.1 Purpose ....................................................................................................................................................... 12

ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 303 746 V1.1.1 (2021-02)

7.4.2 Method of measurement ............................................................................................................................. 12

7.4.3 Requirement ................................................................................................................................................ 13

7.5 Damp heat ........................................................................................................................................................ 13

7.5.1 Purpose ....................................................................................................................................................... 13

7.5.2 Method of measurement ............................................................................................................................. 13

7.5.3 Requirement ................................................................................................................................................ 13

8 Transmitter ............................................................................................................................................. 13

8.1 Frequency error ................................................................................................................................................ 13

8.1.1 Definition .................................................................................................................................................... 13

8.1.2 Method of measurement ............................................................................................................................. 13

8.1.3 Limit ........................................................................................................................................................... 13

8.2 Transmitter EIRP .............................................................................................................................................. 13

8.2.1 Definition .................................................................................................................................................... 13

8.2.2 Method of measurement ............................................................................................................................. 14

8.2.3 Limit ........................................................................................................................................................... 14

8.3 Transmitter B bandwidth ........................................................................................................................... 14

-40 dB

8.3.1 Definition .................................................................................................................................................... 14

8.3.2 Method of measurement ............................................................................................................................. 14

8.3.3 Limit ........................................................................................................................................................... 14

8.4 Transmitter out-of-band emissions ................................................................................................................... 14

8.4.1 Definition .................................................................................................................................................... 14

8.4.2 Method of measurement ............................................................................................................................. 14

8.4.3 Limit ........................................................................................................................................................... 15

8.5 Transmitter spurious emissions ........................................................................................................................ 15

8.5.1 Definition .................................................................................................................................................... 15

8.5.2 Method of measurement ............................................................................................................................. 15

8.5.3 Limit ........................................................................................................................................................... 16

8.6 Standby mode emissions .................................................................................................................................. 16

8.6.1 Definition .................................................................................................................................................... 16

8.6.2 Method of measurement ............................................................................................................................. 16

8.6.3 Limits .......................................................................................................................................................... 16

9 Receiver .................................................................................................................................................. 16

9.1 Maximum usable sensitivity ............................................................................................................................. 16

9.1.1 Definition .................................................................................................................................................... 16

9.1.2 Method of measurement ............................................................................................................................. 16

9.1.3 Limit ........................................................................................................................................................... 16

9.2 Co-channel rejection......................................................................................................................................... 17

9.2.1 Definition .................................................................................................................................................... 17

9.2.2 Method of measurement ............................................................................................................................. 17

9.2.3 Limit ........................................................................................................................................................... 17

9.3 Adjacent channel selectivity ............................................................................................................................. 17

9.3.1 Definition .................................................................................................................................................... 17

9.3.2 Method of measurement ............................................................................................................................. 17

9.3.3 Limit ........................................................................................................................................................... 18

9.4 Blocking ........................................................................................................................................................... 18

9.4.1 Definition .................................................................................................................................................... 18

9.4.2 Method of measurement ............................................................................................................................. 18

9.4.3 Limit ........................................................................................................................................................... 18

10 Testing for compliance with technical requirements .............................................................................. 18

10.1 Environmental conditions for testing ............................................................................................................... 18

10.2 Interpretation of the measurement results ........................................................................................................ 19

History .............................................................................................................................................................. 20

ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This final draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the ETSI standards EN

Approval Procedure.
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

Introduction

The present document applies to systems utilizing radio links between platforms and vessels for dynamic positioning of

vessels engaged in coordinated maritime activities.
ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
1 Scope

The present document specifies technical characteristics and methods of measurements for radiolocation equipment

with the following characteristics:

• intended to operate in maritime dynamic positioning systems functioning with full duplex links having a

duplex separation of 30 MHz;
• operating in the 9 GHz frequency band;
• with an integral antenna.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-T E.161 (02-2001): "Arrangement of digits, letters and symbols on

telephones and other devices that can be used for gaining access to a telephone network".

[2] ISO 25862:2019: "Ships and marine technology -- Marine magnetic compasses, binnacles and

azimuth reading devices".

[3] ETSI TS 103 052 (V1.1.1) (03-2011): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Radiated measurement methods and general arrangements for test sites up to 100 GHz".

[4] ERC Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[5] ISO 7010:2019: "Graphical symbols - Safety colours and safety signs - Registered safety signs".

2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.
Not applicable.
ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B Bandwidth
dBm Level (dB) relative to 1 mW
dBpp Level (dB) below peak power
dBµV Level (dB) relative to 1 µV/m
f Frequency
m Metre
ppm Parts per million (10 )
Q Q factor is a resonance parameter
s Second
V Volt
W Watt
Ω Ohm
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
dc direct current
EIRP Equivalent Isotropically Radiated Power
EN European Norm
ERC European Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
IPR Intellectual Property Right
ISO International Organization for Standardization

ITU-T International Telecommunication Union - Telecommunication standardization sector

PEP Peak Envelope Power
pp peak power
RF Radio Frequency
Rx Receiver
SR Special Report
TS Technical Specification
Tx Transmitter
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 303 746 V1.1.1 (2021-02)
4 Technical requirements
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document.
4.2 Construction

The mechanical and electrical construction and finish of the equipment shall conform in all respects to good engineering

practice, and the equipment shall be suitable for use on board ships.

All controls shall be of sufficient size to enable the usual control functions to be easily performed and the number of

controls should be the minimum necessary for simple and satisfactory operation.

For the purpose of conformance testing, relevant technical documentation shall be supplied with the equipment.

The equipment shall be capable of operating on two full duplex channels.

It shall not be possible to transmit while any frequency synthesizer used within the transmitter is out of lock.

4.3 Controls and indicators

The equipment shall have a frequency selector and shall indicate the operating frequency at which the installation is set

and this shall be legible irrespective of the external lighting conditions.

Where an input panel on the equipment for entering digit 0 to digit 9 is provided, this shall conform to Recommendation

ITU-T E.161 [1].
The equipment shall have the following additional controls and indicators:

• a means for reducing the brightness of the equipment illumination to almost zero;

• an on/off switch for the entire installation with a visual indication that the installation is in operation;

• a visual indication that the equipment is transmitting.
The equipment shall also meet the following requirements:

• the user shall not have access to any control which, if wrongly set, might impair the technical characteristics of

the equipment.
4.4 Safety precautions

Measures shall be taken to protect the equipment against the effects of overcurrent or overvoltage.

Measures shall be taken to prevent damage to the equipment if the electrical power source produces transient voltage

variations and to prevent any damage that might arise from an accidental reversal of polarity of the electrical power

source.
Means shall be provided for earthing exposed metallic parts of the equipment.

All components and wiring in which the dc or ac voltage (other than radio-frequency voltage) are generated, separately

or in combination , peak voltages in excess of 50 V shall be protected against any accidental access and shall be

automatically isolated from all electrical power sources if the protective covers are removed. Alternatively, the

equipment shall be constructed in such a way as to prevent access to components operating at such voltages unless an

appropriate tool is used such as a nut-spanner or screwdriver. Conspicuous warning labels in accordance with

ISO 7010 [5] shall be affixed both inside the equipment and on the protective covers.

ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 303 746 V1.1.1 (2021-02)

The information in any volatile memory device shall be protected from interruptions in the power supply of up to 60 s

duration.
4.5 Labelling
All controls, instruments, indicators and ports shall be clearly labelled.

Details of the power supply from which the equipment is intended to operate shall be clearly indicated on the

equipment.

The compass safe distance as defined in ISO 25862 [2] (Method B) shall be stated on the equipment or in the technical

manual.
4.6 Frequencies

The frequency pairs used by the equipment shall be clearly marked. An example of such pairs is given in Table 1.

Table 1: Example of operating frequencies
Pair number Tx [MHz] Rx [MHz]
1 9 200
...

Draft ETSI EN 303 746 V1.0.1 (2020-08)
EUROPEAN STANDARD
Maritime Location Systems;
Radio transmitters and receivers for communication links
operating in the 9 GHz frequency band (X band)
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Reference
DEN/ERM-TGMAR-611
Keywords
location, maritime, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

Introduction ........................................................................................................................................................ 5

1 Scope ........................................................................................................................................................ 6

2 References ................................................................................................................................................ 6

2.1 Normative references ......................................................................................................................................... 6

2.2 Informative references ........................................................................................................................................ 6

3 Definition of terms, symbols and abbreviations ....................................................................................... 7

3.1 Terms .................................................................................................................................................................. 7

3.2 Symbols .............................................................................................................................................................. 7

3.3 Abbreviations ..................................................................................................................................................... 7

4 Technical requirements ............................................................................................................................ 8

4.1 Environmental profile ......................................................................................................................................... 8

4.2 Construction ....................................................................................................................................................... 8

4.3 Controls and indicators ....................................................................................................................................... 8

4.4 Safety precautions .............................................................................................................................................. 8

4.5 Labelling............................................................................................................................................................. 9

4.6 Frequencies......................................................................................................................................................... 9

4.7 Polarization......................................................................................................................................................... 9

4.8 Transceiver data interface................................................................................................................................... 9

5 General conditions of measurements ....................................................................................................... 9

5.1 Test site and general arrangements for measurements ....................................................................................... 9

5.2 General ............................................................................................................................................................. 10

5.3 Impedance ........................................................................................................................................................ 10

5.4 Tests of equipment with a notch filter .............................................................................................................. 10

5.5 Facilities for access .......................................................................................................................................... 10

5.5.1 Coupling arrangements ............................................................................................................................... 10

5.6 Modes of operation of the transmitter .............................................................................................................. 10

6 Test conditions ....................................................................................................................................... 10

6.1 General ............................................................................................................................................................. 10

6.2 Test signals ....................................................................................................................................................... 10

6.3 Normal test conditions ...................................................................................................................................... 11

6.3.1 Normal temperature and humidity .............................................................................................................. 11

6.3.2 Normal power source .................................................................................................................................. 11

6.3.2.1 Mains voltage and frequency ................................................................................................................ 11

6.3.2.2 Battery power source............................................................................................................................. 11

6.3.2.3 Other power sources .............................................................................................................................. 11

6.4 Extreme test conditions .................................................................................................................................... 11

6.4.1 General requirements .................................................................................................................................. 11

6.4.2 Extreme temperatures ................................................................................................................................. 11

6.4.3 Extreme values of test power source .......................................................................................................... 11

6.4.3.1 Mains voltage and frequency ................................................................................................................ 11

6.4.3.2 Battery power source............................................................................................................................. 11

6.4.3.3 Other power sources .............................................................................................................................. 11

6.4.4 Procedure for tests at extreme temperatures ............................................................................................... 12

7 Environmental tests ................................................................................................................................ 12

7.1 General requirements ....................................................................................................................................... 12

7.2 Procedure .......................................................................................................................................................... 12

7.3 Performance check ........................................................................................................................................... 12

7.4 Vibration tests .................................................................................................................................................. 12

7.4.1 Purpose ....................................................................................................................................................... 12

ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 303 746 V1.0.1 (2020-08)

7.4.2 Method of measurement ............................................................................................................................. 12

7.4.3 Requirement ................................................................................................................................................ 13

7.5 Damp heat ........................................................................................................................................................ 13

7.5.1 Purpose ....................................................................................................................................................... 13

7.5.2 Method of measurement ............................................................................................................................. 13

7.5.3 Requirement ................................................................................................................................................ 13

8 Transmitter ............................................................................................................................................. 13

8.1 Frequency error ................................................................................................................................................ 13

8.1.1 Definition .................................................................................................................................................... 13

8.1.2 Method of measurement ............................................................................................................................. 13

8.1.3 Limit ........................................................................................................................................................... 14

8.2 Transmitter EIRP .............................................................................................................................................. 14

8.2.1 Definition .................................................................................................................................................... 14

8.2.2 Method of measurement ............................................................................................................................. 14

8.2.3 Limit ........................................................................................................................................................... 14

8.3 Transmitter B bandwidth ........................................................................................................................... 14

-40dB

8.3.1 Definition .................................................................................................................................................... 14

8.3.2 Method of measurement ............................................................................................................................. 14

8.3.3 Limit ........................................................................................................................................................... 14

8.4 Transmitter out-of-band emissions ................................................................................................................... 14

8.4.1 Definition .................................................................................................................................................... 14

8.4.2 Method of measurement ............................................................................................................................. 15

8.4.3 Limit ........................................................................................................................................................... 15

8.5 Transmitter spurious emissions ........................................................................................................................ 15

8.5.1 Definition .................................................................................................................................................... 15

8.5.2 Method of measurement ............................................................................................................................. 15

8.5.3 Limit ........................................................................................................................................................... 16

8.6 Standby mode emissions .................................................................................................................................. 16

8.6.1 Definition .................................................................................................................................................... 16

8.6.2 Method of measurement ............................................................................................................................. 16

8.6.3 Limits .......................................................................................................................................................... 16

9 Receiver .................................................................................................................................................. 16

9.1 Maximum usable sensitivity ............................................................................................................................. 16

9.1.1 Definition .................................................................................................................................................... 16

9.1.2 Method of measurement ............................................................................................................................. 16

9.1.3 Limit ........................................................................................................................................................... 17

9.2 Co-channel rejection......................................................................................................................................... 17

9.2.1 Definition .................................................................................................................................................... 17

9.2.2 Method of measurement ............................................................................................................................. 17

9.2.3 Limit ........................................................................................................................................................... 17

9.3 Adjacent channel selectivity ............................................................................................................................. 17

9.3.1 Definition .................................................................................................................................................... 17

9.3.2 Method of measurement ............................................................................................................................. 17

9.3.3 Limit ........................................................................................................................................................... 18

9.4 Blocking ........................................................................................................................................................... 18

9.4.1 Definition .................................................................................................................................................... 18

9.4.2 Method of measurement ............................................................................................................................. 18

9.4.3 Limit ........................................................................................................................................................... 18

10 Testing for compliance with technical requirements .............................................................................. 19

10.1 Environmental conditions for testing ............................................................................................................... 19

10.2 Interpretation of the measurement results ........................................................................................................ 19

History .............................................................................................................................................................. 20

ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility

and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote phase of the ETSI

standards EN Approval Procedure.
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

Introduction

The present document applies to systems utilizing radio communication links between platforms and vessels for

dynamic positioning of vessels engaged in coordinated maritime activities.
ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 303 746 V1.0.1 (2020-08)
1 Scope

The present document specifies technical characteristics and methods of measurements for radiolocation equipment

with the following characteristics:

• intended to operate with maritime dynamic positioning systems functioning with full duplex links with

30 MHz separation operating;
• operating in the 9 GHz frequency band;
• with an integral antenna.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-T E.161 (02-2001): "Arrangement of digits, letters and symbols on

telephones and other devices that can be used for gaining access to a telephone network".

[2] ISO 25862:2019: "Ships and marine technology -- Marine magnetic compasses, binnacles and

azimuth reading devices".

[3] ETSI TS 103 052 (V1.1.1) (03-2011): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Radiated measurement methods and general arrangements for test sites up to 100 GHz".

[4] ERC Recommendation.74-01 (2019): "Unwanted emissions in the spurious domain".

2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.
Not applicable.
ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 746 V1.0.1 (2020-08)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B Bandwidth
dBm Level (dB) relative to 1 mW
dBpp Level (dB) below peak power
dBµV Level (dB) relative to 1 µV/m
f Frequency
m Meter
ppm Parts per million (10 )
Q Q factor is a resonance parameter
s Second
V Volt
W Watt
Ω Ohm
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
dc direct current
EIRP Equivalent Isotropically Radiated Power
EN European Norm
ERC European Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
IPR Intellectual Property Right
ISO International Organization for Standardization

ITU-T International Telecommunication Union - Telecommunication standardization sector

PEP Peak Envelope Power
pp peak power
RF Radio Frequency
Rx Receiver
SR Special Report
TS Technical Specification
Tx Transmitter
VSWR Voltage Standing Wave Ratio
ETSI
---------------------- Page: 7 ----------------------
8 Draft ETSI EN 303 746 V1.0.1 (2020-08)
4 Technical requirements
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document.
4.2 Construction

The mechanical and electrical construction and finish of the equipment shall conform in all respects to good engineering

practice, and the equipment shall be suitable for use on board ships.

All controls shall be of sufficient size to enable the usual control functions to be easily performed and the number of

controls should be the minimum necessary for simple and satisfactory operation.

For the purpose of conformance testing, relevant technical documentation shall be supplied with the equipment.

The equipment shall be capable of operating on two full duplex channels.

It shall not be possible to transmit while any frequency synthesizer used within the transmitter is out of lock.

4.3 Controls and indicators

The equipment shall have a frequency selector and shall indicate the operating frequency at which the installation is set

and this shall be legible irrespective of the external lighting conditions.

Where an input panel on the equipment for entering the digits 0 - 9 is provided, this shall conform to Recommendation

ITU-T E.161 [1].
The equipment shall have the following additional controls and indicators:

• a means for reducing the brightness of the equipment illumination to almost zero;

• an on/off switch for the entire installation with a visual indication that the installation is in operation;

• a visual indication that the equipment is transmitting.
The equipment shall also meet the following requirements:

• the user shall not have access to any control which, if wrongly set, might impair the technical characteristics of

the equipment.
4.4 Safety precautions

Measures shall be taken to protect the equipment against the effects of overcurrent or overvoltage.

Measures shall be taken to prevent damage to the equipment if the electrical power source produces transient voltage

variations and to prevent any damage that might arise from an accidental reversal of polarity of the electrical power

source.
Means shall be provided for earthing exposed metallic parts of the equipment.
ETSI
---------------------- Page: 8 ----------------------
9 Draft ETSI EN 303 746 V1.0.1 (2020-08)

All components and wiring in which the dc or ac voltage (other than radio-frequency voltage) produce, singly or in

combination, peak voltages in excess of 50 V shall be protected against any accidental access and shall be automatically

isolated from all electrical power sources if the protective covers are removed. Alternatively, the equipment shall be

constructed in such a way as to prevent access to components operating at such voltages unless an appropriate tool is

used such as a nut-spanner or screwdriver. Conspicuous warning labels shall be affixed both inside the equipment and

on the protective covers.

The information in any volatile memory device shall be protected from interruptions in the power supply of up to 60 s

duration.
4.5 Labelling
All controls, instruments, indicators and ports shall be clearly labelled.

Details of the power supply from which the equipment is intended to operate shall be clearly indicated on the

equipment.

The compass safe distance as defined in ISO 25862 [2] (Method B) shall be stated on the equipment or in the technical

manual.
4.6 Frequencies

The frequency pairs used by the equipment shall be clearly marked. An example of such pairs is in Table 1.

Table 1: Example of operating frequencies
Pair number Tx [MHz] Rx [MHz]
1 9 200 9 230
1(reverse) 9 230 9 200
2 9 270 9 300
2(reverse) 9 300 9 270
4.7 Polarization
The equipment shall operate with vertical linear polarization.
4.8 Transceiver data interface
Equipm
...

SLOVENSKI STANDARD
oSIST prEN 303 746 V1.0.1:2020
01-oktober-2020

Pomorski lokacijski sistemi - Radijski oddajniki in sprejemniki za komunikacijske

povezave, ki delujejo v frekvenčnem pasu 9 GHz (pas X)

Maritime Location Systems - Radio transmitters and receivers for communication links

operating in the 9 GHz frequency band (X band)
Ta slovenski standard je istoveten z: ETSI EN 303 746 V1.0.1 (2020-08)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
oSIST prEN 303 746 V1.0.1:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 303 746 V1.0.1:2020
---------------------- Page: 2 ----------------------
oSIST prEN 303 746 V1.0.1:2020
Draft ETSI EN 303 746 V1.0.1 (2020-08)
EUROPEAN STANDARD
Maritime Location Systems;
Radio transmitters and receivers for communication links
operating in the 9 GHz frequency band (X band)
---------------------- Page: 3 ----------------------
oSIST prEN 303 746 V1.0.1:2020
2 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Reference
DEN/ERM-TGMAR-611
Keywords
location, maritime, radio
ETSI
650 Route des Lucioles
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Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
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The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 4 ----------------------
oSIST prEN 303 746 V1.0.1:2020
3 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

Introduction ........................................................................................................................................................ 5

1 Scope ........................................................................................................................................................ 6

2 References ................................................................................................................................................ 6

2.1 Normative references ......................................................................................................................................... 6

2.2 Informative references ........................................................................................................................................ 6

3 Definition of terms, symbols and abbreviations ....................................................................................... 7

3.1 Terms .................................................................................................................................................................. 7

3.2 Symbols .............................................................................................................................................................. 7

3.3 Abbreviations ..................................................................................................................................................... 7

4 Technical requirements ............................................................................................................................ 8

4.1 Environmental profile ......................................................................................................................................... 8

4.2 Construction ....................................................................................................................................................... 8

4.3 Controls and indicators ....................................................................................................................................... 8

4.4 Safety precautions .............................................................................................................................................. 8

4.5 Labelling............................................................................................................................................................. 9

4.6 Frequencies......................................................................................................................................................... 9

4.7 Polarization......................................................................................................................................................... 9

4.8 Transceiver data interface................................................................................................................................... 9

5 General conditions of measurements ....................................................................................................... 9

5.1 Test site and general arrangements for measurements ....................................................................................... 9

5.2 General ............................................................................................................................................................. 10

5.3 Impedance ........................................................................................................................................................ 10

5.4 Tests of equipment with a notch filter .............................................................................................................. 10

5.5 Facilities for access .......................................................................................................................................... 10

5.5.1 Coupling arrangements ............................................................................................................................... 10

5.6 Modes of operation of the transmitter .............................................................................................................. 10

6 Test conditions ....................................................................................................................................... 10

6.1 General ............................................................................................................................................................. 10

6.2 Test signals ....................................................................................................................................................... 10

6.3 Normal test conditions ...................................................................................................................................... 11

6.3.1 Normal temperature and humidity .............................................................................................................. 11

6.3.2 Normal power source .................................................................................................................................. 11

6.3.2.1 Mains voltage and frequency ................................................................................................................ 11

6.3.2.2 Battery power source............................................................................................................................. 11

6.3.2.3 Other power sources .............................................................................................................................. 11

6.4 Extreme test conditions .................................................................................................................................... 11

6.4.1 General requirements .................................................................................................................................. 11

6.4.2 Extreme temperatures ................................................................................................................................. 11

6.4.3 Extreme values of test power source .......................................................................................................... 11

6.4.3.1 Mains voltage and frequency ................................................................................................................ 11

6.4.3.2 Battery power source............................................................................................................................. 11

6.4.3.3 Other power sources .............................................................................................................................. 11

6.4.4 Procedure for tests at extreme temperatures ............................................................................................... 12

7 Environmental tests ................................................................................................................................ 12

7.1 General requirements ....................................................................................................................................... 12

7.2 Procedure .......................................................................................................................................................... 12

7.3 Performance check ........................................................................................................................................... 12

7.4 Vibration tests .................................................................................................................................................. 12

7.4.1 Purpose ....................................................................................................................................................... 12

ETSI
---------------------- Page: 5 ----------------------
oSIST prEN 303 746 V1.0.1:2020
4 Draft ETSI EN 303 746 V1.0.1 (2020-08)

7.4.2 Method of measurement ............................................................................................................................. 12

7.4.3 Requirement ................................................................................................................................................ 13

7.5 Damp heat ........................................................................................................................................................ 13

7.5.1 Purpose ....................................................................................................................................................... 13

7.5.2 Method of measurement ............................................................................................................................. 13

7.5.3 Requirement ................................................................................................................................................ 13

8 Transmitter ............................................................................................................................................. 13

8.1 Frequency error ................................................................................................................................................ 13

8.1.1 Definition .................................................................................................................................................... 13

8.1.2 Method of measurement ............................................................................................................................. 13

8.1.3 Limit ........................................................................................................................................................... 14

8.2 Transmitter EIRP .............................................................................................................................................. 14

8.2.1 Definition .................................................................................................................................................... 14

8.2.2 Method of measurement ............................................................................................................................. 14

8.2.3 Limit ........................................................................................................................................................... 14

8.3 Transmitter B bandwidth ........................................................................................................................... 14

-40dB

8.3.1 Definition .................................................................................................................................................... 14

8.3.2 Method of measurement ............................................................................................................................. 14

8.3.3 Limit ........................................................................................................................................................... 14

8.4 Transmitter out-of-band emissions ................................................................................................................... 14

8.4.1 Definition .................................................................................................................................................... 14

8.4.2 Method of measurement ............................................................................................................................. 15

8.4.3 Limit ........................................................................................................................................................... 15

8.5 Transmitter spurious emissions ........................................................................................................................ 15

8.5.1 Definition .................................................................................................................................................... 15

8.5.2 Method of measurement ............................................................................................................................. 15

8.5.3 Limit ........................................................................................................................................................... 16

8.6 Standby mode emissions .................................................................................................................................. 16

8.6.1 Definition .................................................................................................................................................... 16

8.6.2 Method of measurement ............................................................................................................................. 16

8.6.3 Limits .......................................................................................................................................................... 16

9 Receiver .................................................................................................................................................. 16

9.1 Maximum usable sensitivity ............................................................................................................................. 16

9.1.1 Definition .................................................................................................................................................... 16

9.1.2 Method of measurement ............................................................................................................................. 16

9.1.3 Limit ........................................................................................................................................................... 17

9.2 Co-channel rejection......................................................................................................................................... 17

9.2.1 Definition .................................................................................................................................................... 17

9.2.2 Method of measurement ............................................................................................................................. 17

9.2.3 Limit ........................................................................................................................................................... 17

9.3 Adjacent channel selectivity ............................................................................................................................. 17

9.3.1 Definition .................................................................................................................................................... 17

9.3.2 Method of measurement ............................................................................................................................. 17

9.3.3 Limit ........................................................................................................................................................... 18

9.4 Blocking ........................................................................................................................................................... 18

9.4.1 Definition .................................................................................................................................................... 18

9.4.2 Method of measurement ............................................................................................................................. 18

9.4.3 Limit ........................................................................................................................................................... 18

10 Testing for compliance with technical requirements .............................................................................. 19

10.1 Environmental conditions for testing ............................................................................................................... 19

10.2 Interpretation of the measurement results ........................................................................................................ 19

History .............................................................................................................................................................. 20

ETSI
---------------------- Page: 6 ----------------------
oSIST prEN 303 746 V1.0.1:2020
5 Draft ETSI EN 303 746 V1.0.1 (2020-08)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility

and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote phase of the ETSI

standards EN Approval Procedure.
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

Introduction

The present document applies to systems utilizing radio communication links between platforms and vessels for

dynamic positioning of vessels engaged in coordinated maritime activities.
ETSI
---------------------- Page: 7 ----------------------
oSIST prEN 303 746 V1.0.1:2020
6 Draft ETSI EN 303 746 V1.0.1 (2020-08)
1 Scope

The present document specifies technical characteristics and methods of measurements for radiolocation equipment

with the following characteristics:

• intended to operate with maritime dynamic positioning systems functioning with full duplex links with

30 MHz separation operating;
• operating in the 9 GHz frequency band;
• with an integral antenna.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-T E.161 (02-2001): "Arrangement of digits, letters and symbols on

telephones and other devices that can be used for gaining access to a telephone network".

[2] ISO 25862:2019: "Ships and marine technology -- Marine magnetic compasses, binnacles and

azimuth reading devices".

[3] ETSI TS 103 052 (V1.1.1) (03-2011): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Radiated measurement methods and general arrangements for test sites up to 100 GHz".

[4] ERC Recommendation.74-01 (2019): "Unwanted emissions in the spurious domain".

2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.
Not applicable.
ETSI
---------------------- Page: 8 ----------------------
oSIST prEN 303 746 V1.0.1:2020
7 Draft ETSI EN 303 746 V1.0.1 (2020-08)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B Bandwidth
dBm Level (dB) relative to 1 mW
dBpp Level (dB) below peak power
dBµV Level (dB) relative to 1 µV/m
f Frequency
m Meter
ppm Parts per million (10 )
Q Q factor is a resonance parameter
s Second
V Volt
W Watt
Ω Ohm
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
dc direct current
EIRP Equivalent Isotropically Radiated Power
EN European Norm
ERC European Radiocommunication Committee
EUT Equipment Under Test
FM Frequency Modulation
IPR Intellectual Property Right
ISO International Organization for Standardization

ITU-T International Telecommunication Union - Telecommunication standardization sector

PEP Peak Envelope Power
pp peak power
RF Radio Frequency
Rx Receiver
SR Special Report
TS Technical Specification
Tx Transmitter
VSWR Voltage Standing Wave Ratio
ETSI
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oSIST prEN 303 746 V1.0.1:2020
8 Draft ETSI EN 303 746 V1.0.1 (2020-08)
4 Technical requirements
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document.
4.2 Construction

The mechanical and electrical construction and finish of the equipment shall conform in all respects to good engineering

practice, and the equipment shall be suitable for use on board ships.

All controls shall be of sufficient size to enable the usual control functions to be easily performed and the number of

controls should be the minimum necessary for simple and satisfactory operation.

For the purpose of conformance testing, relevant technical documentation shall be supplied with the equipment.

The equipment shall be capable of operating on two full duplex channels.

It shall not be possible to transmit while any frequency synthesizer used within the transmitter is out of lock.

4.3 Controls and indicators

The equipment shall have a frequency selector and shall indicate the operating frequency at which the installation is set

and this shall be legible irrespective of the external lighting conditions.

Where an input panel on the equipment for entering the digits 0 - 9 is provided, this shall conform to Recommendation

ITU-T E.161 [1].
The equipment shall have the following additional controls and indicators:

• a means for reducing the brightness of the equipment illumination to almost zero;

• an on/off switch for the entire installation with a visual indication that the installation is in operation;

• a visual indication that the equipment is transmitting.
The equipment shall also meet the following requirements:

• the user shall not have access to any control which, if wrongly set, might impair the technical characteristics of

the equipment.
4.4 Safety precautions

Measures shall be taken to protect the equipment against the effects of overcurrent or overvoltage.

Measures shall be taken to prevent damage to the equipment if the electrical power source produces transient voltage

variations and to prevent any damage that might arise from an accidental reversal of polarity of the electrical power

source.
Means shall be provided for earthing exposed metallic parts of the equipment.
ETSI
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oSIST prEN 303 746 V1.0.1:2020
9 Draft ETSI EN 303 746 V1.0.1 (2020-08)

All components and wiring in which the dc or ac voltage (other than radio-frequency voltage) produce, singly or in

combination, peak voltages in excess of 50 V shall be protected against any accidental access and shall be automatically

isolated from all electrical power sources if the protective covers are removed. Alternatively, the equipm

...

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