SIST EN 302 248 V1.1.2:2008

SLOVENSKI STANDARD
SIST EN 302 248 V1.1.2:2008
01-oktober-2008
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Electromagnetic compatibility and Radio spectum Matters (ERM) - Navigation radar for

use on non-SOLAS vessels: Harmonized EN covering essential requirements of article

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

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

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

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

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

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

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

3 Symbols and abbreviations.......................................................................................................................7

3.1 Symbols..............................................................................................................................................................7

3.2 Abbreviations.....................................................................................................................................................7

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

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

4.2 Conformance requirements................................................................................................................................8

4.2.1 Radiated emissions.......................................................................................................................................8

4.2.1.1 Definition................................................................................................................................................8

4.2.1.2 Limits......................................................................................................................................................8

4.2.1.3 Conformance...........................................................................................................................................8

4.2.2 Operating frequency.....................................................................................................................................8

4.2.2.1 Definition................................................................................................................................................8

4.2.2.2 Limits......................................................................................................................................................8

4.2.2.3 Conformance...........................................................................................................................................9

4.2.3 Transmitter pulse power ...............................................................................................................................9

4.2.3.1 Definition................................................................................................................................................9

4.2.3.2 Limits......................................................................................................................................................9

4.2.3.3 Conformance...........................................................................................................................................9

4.2.4 Out of band emissions...................................................................................................................................9

4.2.4.1 Definition................................................................................................................................................9

4.2.4.2 Limits....................................................................................................................................................10

4.2.4.3 Conformance.........................................................................................................................................10

4.2.5 Radiated spurious emissions.......................................................................................................................10

4.2.5.1 Definition..............................................................................................................................................10

4.2.5.2 Limits....................................................................................................................................................10

4.2.5.3 Conformance.........................................................................................................................................10

5 Testing for compliance with technical requirements..............................................................................11

5.1 Test conditions, power supply and ambient temperatures................................................................................11

5.1.1 Standard operating mode of the radar equipment .......................................................................................11

5.1.2 Normal test conditions ................................................................................................................................11

5.1.2.1 Normal temperature and humidity ........................................................................................................11

5.1.2.2 Normal test power supply .....................................................................................................................11

5.1.2.2.1 AC test power supply ......................................................................................................................11

5.1.2.2.2 DC test power supply ......................................................................................................................12

5.1.3 Extreme test conditions...............................................................................................................................12

5.1.3.1 Extreme temperatures............................................................................................................................12

5.1.3.1.1 Indoor unit .......................................................................................................................................12

5.1.3.1.2 Outdoor unit ....................................................................................................................................12

5.1.3.2 Extreme power supply voltage test conditions......................................................................................12

5.2 Interpretation of the measurement results ........................................................................................................12

5.3 Essential radio test suites..................................................................................................................................13

5.3.1 Radiated emissions.....................................................................................................................................13

5.3.2 Operating frequency...................................................................................................................................13

5.3.3 Transmitter pulse power .............................................................................................................................14

5.3.4 Out of band emissions.................................................................................................................................14

5.3.5 Radiated spurious emissions.......................................................................................................................14

5.4 Other test specifications...................................................................................................................................15

Annex A (normative): HS Requirements and conformance Test specifications Table (HS-

RTT)................................................................................................................16

Annex B (normative): Radiated measurement..................................................................................18

B.1 Test sites and general arrangements for measurements involving the use of radiated fields .................18

B.1.1 Anechoic chamber............................................................................................................................................18

B.1.2 Anechoic chamber with a ground plane ...........................................................................................................19

B.1.3 OATS...............................................................................................................................................................20

B.1.4 Test antenna......................................................................................................................................................21

B.1.5 Substitution antenna.........................................................................................................................................21

B.1.6 Measuring antenna...........................................................................................................................................22

B.2 Guidance on the use of radiation test sites .............................................................................................22

B.2.1 Verification of the test site ...............................................................................................................................22

B.2.2 Preparation of the EUT.....................................................................................................................................22

B.2.3 Power supplies to the EUT...............................................................................................................................22

B.2.4 Volume control setting for analogue speech tests ............................................................................................22

B.2.5 Range length.....................................................................................................................................................23

B.2.6 Site preparation................................................................................................................................................23

measuring methods........................................................................................25

C.1 Indirect connection via the rotating joint................................................................................................25

C.2 Maximum permitted out of band emissions power levels......................................................................26

C.3 Maximum permitted spurious emissions power levels ..........................................................................27

Annex D (informative): The EN title in the official languages ...........................................................28

History ..............................................................................................................................................................30

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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

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

This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee

The present document is a harmonized EN covering essential requirements under article 3.2 of the R&TTE directive for

The present document has been produced by ETSI in response to a mandate from the European Commission issued

under Council Directive 98/34/EC [i.2] (as amended) laying down a procedure for the provision of information in the

The present document is intended to become a Harmonized Standard, the reference of which will be published in the

Official Journal of the European Communities referencing the Directive 1999/5/EC [i.1] of the European Parliament

and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual

Technical specifications relevant to Directive 1999/5/EC [i.1] are given in annex A.

The present document is intended to cover the provisions of Directive 1999/5/EC [i.1] (R&TTE Directive) Article 3.2,

which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to

terrestrial/space radio communications and orbital resources so as to avoid harmful interference".

In addition to the present document, other ENs that specify technical requirements in respect of essential requirements

under other parts of Article 3 of the R&TTE Directive [i.1] may apply to equipment within the scope of the present.

This radar equipment operates in the frequency range 2 900 MHz to 3 100 MHz or 9 300 MHz to 9 500 MHz allocated

to the radio navigation service as defined in article 5 of the Radio Regulations [6].

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

• Non-specific reference may be made only to a complete document or a part thereof and only in the following

- if it is accepted that it will be possible to use all future changes of the referenced document for the

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

For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,

the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the

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method of access to the referenced document and the full network address, with the same punctuation and use of upper

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

The following referenced documents are indispensable for the application of this document. For dated references, only

the edition cited applies. For non-specific references, the latest edition of the referenced document (including any

[1] CENELEC EN 60945 (Edition 4 - 2002): "Maritime navigation and radiocommunication

equipment and systems - General requirements - Methods of testing and required test results".

[2] ITU-R Recommendation M.1177-3 (2003): "Techniques for measurement of unwanted emissions

[3] ANSI C63.5 (1988): "American National Standard for Calibration of Antennas Used for Radiated

[4] ETSI TR 100 028 (V1.3.1 - all parts): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".

[5] ETSI TR 102 273 (2001): "Electromagnetic compatibility and Radio spectrum Matters (ERM);

Improvement on Radiated Methods of Measurement (using test site) and evaluation of the

The following referenced documents are not essential to the use of the present document but they assist the user with

regard to a particular subject area. For non-specific references, the latest version of the referenced document (including

[i.1] Directive 1999/5/EC of The European Parliament and of the Council of 9 March 1999 on radio

equipment and telecommunications terminal equipment and the mutual recognition of their

[i.2] Directive 98/34/EC of the European Parliament and of the Council laying down a procedure for

the provision of information in the field of technical standards and regulations and of rules on

[i.3] ITU-R Recommendation SM.1541-1: "Unwanted emissions in the out-of-band domain".

Tests defined in the present document shall be carried out at representative points within the boundary limits of the

declared operational environmental profile which, as a minimum, shall be that specified in the test conditions contained

As technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient variety

of environmental conditions as specified in the present document to give confidence of compliance for the affected

technical requirements (which shall also be within the boundary limits of the declared operational environmental

Radiated electromagnetic emissions are to be understood as any signals radiated by the completely assembled and

operated radar equipment, other than the operating frequency, with its spectra, which can potentially disturb other

In the frequency range 150 kHz to 2 GHz, the measured radio frequency field strength at a distance of 3 m caused by

The transmitter produces short microwave pulses, which causes a broad frequency spectrum, depending on the pulse

duration and the pulse repetition frequency. The operating frequency is to be understood as the frequency of the

microwave during the transmitting pulse and is represented by the spectral line of highest amplitude.

In all switchable distance ranges and pulse durations the operation frequency of the radar equipment shall have values

Transmitter pulse power P is to be understood as the mean value of the microwave power during the transmission pulse

at the antenna side of the Rotary Joint (RJ). For the arithmetic mean value of the transmitting power, integrated over the

The transmitter pulse power P shall be as specified by the manufacturer +0 dB to -3 dB.

ITU-R Recommendation SM.1541-1 [i.3] gives guidance to calculate the -40 dB bandwidth and to specify the OOB

The -40 dB bandwidth (B ) for primary radars shall be determined with the following established formula by using the

where the coefficient K is 6,2 for radars with output power greater than 100 kW and 7,6 for lower-power radars and

radars operating in the radio navigation service in the 2 900 MHz to 3 100 MHz and 9 300 MHz to 9 500 MHz band.

The latter expression applies if the rise time t is less than about 0,0094t when K is 6,2 or about 0,014t when K is 7,6.

For ideal rectangular pulses, the spectrum falls off at 20 dB per decade leading to a B of 6,4/t and a 40 dB bandwidth

ten times as large, i.e. 64/t. To discourage the use of pulses with abrupt rise and fall times, no margin is allowed. The

spectra of trapezoidal pulses fall off firstly at 20 dB per decade and then ultimately at 40 dB per decade. If the radio or

rise time to pulse duration exceeds 0,008 the 40 dB points will fall on the 40 dB per decade slope, in which case the

e.g. a radar with a fixed 10 ns rise time would result in bandwidth values as shown in table 2.

The maximum radiated Out Of Band-emission power level shall not exceed the limits given in figure C.3.

Spurious emissions are defined as the entity of all emissions in the frequency range of 70 % of the cut-off frequency of

• intermodulation (between oscillator- and operation frequency or between oscillator and harmonics);

All radiated spurious emission levels shall be 43+10 log PEP or 60 dB below the PEP level of the radiated operating

Unless otherwise stated the radar equipment shall be set to the standard operating mode which is understood to be as