ETSI ETS 300 460 ed.1 (1996-05)

Satellite Earth Stations and Systems (SES); Maritime Mobile Earth Stations (MMES) operating in the 1,5/1,6 GHz bands providing Low Bit Rate Data Communications (LBRDC) for the Global Maritime Distress and Safety System (GMDSS); Technical characteristics and methods of measurement

DE/SES-05011

Satelitske zemeljske postaje in sistemi (SES) - Pomorske mobilne zemeljske postaje (MMES), ki delujejo v pasovih 1,5/1,6 GHz in zagotavljajo podatkovne komunikacije z nizko bitno hitrostjo (LBDRC) za globalni pomorski zasilni in varnostni sistem (GMDSS) - Tehnične karakteristike in merilne metode

General Information

• Status: Published
• Publication Date: 08-May-1996
• Technical Committee: SES 5 - E/S for Mobile Services
• Current Stage: 12 - Completion
• Due Date: 21-May-1996
• Completion Date: 09-May-1996
• Ref Project: SIST ETS 300 460:2000 - Satellite Earth Stations and Systems (SES); Maritime Mobile Earth Stations (MMES) operating in the 1,5/1,6 GHz bands providing Low Bit Rate Data Communications (LBRDC) for the Global Maritime Distress and Safety System (GMDSS); Technical characteristics and methods of measurement

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 460:2000
01-november-2000
6DWHOLWVNH]HPHOMVNHSRVWDMHLQVLVWHPL6(63RPRUVNHPRELOQH]HPHOMVNH
SRVWDMH00(6NLGHOXMHMRYSDVRYLK*+]LQ]DJRWDYOMDMRSRGDWNRYQH
NRPXQLNDFLMH]QL]NRELWQRKLWURVWMR/%'5&]DJOREDOQLSRPRUVNL]DVLOQLLQ
YDUQRVWQLVLVWHP*0'667HKQLþQHNDUDNWHULVWLNHLQPHULOQHPHWRGH
Satellite Earth Stations and Systems (SES); Maritime Mobile Earth Stations (MMES)
operating in the 1,5/1,6 GHz bands providing Low Bit Rate Data Communications
(LBRDC) for the Global Maritime Distress and Safety System (GMDSS); Technical
characteristics and methods of measurement
Ta slovenski standard je istoveten z: ETS 300 460 Edition 1
ICS:
33.070.40 Satelit Satellite
SIST ETS 300 460:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 460:2000

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SIST ETS 300 460:2000
EUROPEAN ETS 300 460
TELECOMMUNICATION May 1996
STANDARD
Source: ETSI TC-SES Reference: DE/SES-05011
ICS: 33.060.50
maritime, satellite, mobile, earth station, MES, MMES, emergency, LBRDC, GMDSS,
Key words:
INMARSAT-C
Satellite Earth Stations and Systems (SES);
Maritime Mobile Earth Stations (MMESs)
operating in the 1,5/1,6 GHz bands providing
Low Bit Rate Data Communications (LBRDCs) for
the Global Maritime Distress and Safety System (GMDSS);
Technical characteristics and methods of measurement
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
*
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.

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ETS 300 460: May 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 460: May 1996
Contents
Foreword .5
1 Scope .7
2 Normative references.8
3 Definitions and abbreviations .9
3.1 Definitions .9
3.2 Abbreviations .10
4 Tests.10
4.1 Special Test Equipment (STE) .10
4.2 Test report .10
5 Environmental tests.11
6 General requirements .11
6.1 Equipment certification .11
6.2 Power supply.11
6.2.1 Power supply reversal .11
6.2.2 Power supply interruption.12
6.3 Mechanical construction .12
6.4 Electrical safety.13
6.5 Radio frequency radiation protection (classes 1, 2 and 3 only) .13
6.6 Additional facilities .14
6.7 Integrity of GMDSS equipment .14
6.8 Operating controls.14
6.9 User documentation.15
6.10 Equipment labelling.15
6.11 Ship earth station identities.16
6.12 Storage of software.16
6.13 Equipment maintenance .16
7 Operational requirements.17
7.1 Printing of Enhanced Group Call (EGC) messages (classes 0, 2 and 3 only).17
7.2 Service codes (classes 0, 2 and 3 only) .17
7.3 Navigational interface .18
7.4 Provision for initiating distress alerts from two positions (classes 1, 2 and 3 only) .18
8 Unwanted emissions .19
8.1 General .19
8.2 Unwanted emissions outside the band 1 626,5 to 1 645,5 MHz.19
8.3 Unwanted emissions within the 1 626,5 to 1 645,5 MHz band (classes 1, 2 and 3 only) .20
9 Ship earth station Control and Monitoring Functions (CMF) .21
9.1 General .21
9.2 Processor monitoring (classes 1, 2 and 3 only).21
9.3 Transmit frequency sub-system (classes 1, 2 and 3 only).21
9.4 Initial burst rate transmission (classes 1, 2 and 3 only) .22
9.5 Network control authorisation (classes 1, 2 and 3 only) .22
9.6 Network control reception (classes 1, 2 and 3 only) .22
Annex A (normative): Environmental tests.24
A.1 Ambient temperature.24

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A.2 Relative humidity. 24
A.3 Vibration. 25
Annex B (normative): Unwanted emissions above 1 GHz - test procedure . 26
B.1 Introduction. 26
B.2 Measuring apparatus. 26
B.3 Test set-up. 26
B.4 Measuring procedure. 26
B.5 Alternative measurement procedure . 27
Annex C (informative): Manufacturers declaration . 28
History. 29

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ETS 300 460: May 1996
Foreword
This European Telecommunication Standard (ETS) has been produced by the Satellite Earth Stations and
Systems (SES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption of this ETS: 26 April 1996
Date of latest announcement of this ETS (doa): 31 August 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 29 February 1997
Date of withdrawal of any conflicting National Standard (dow): 29 February 1997
Every ETS prepared by ETSI is a voluntary standard. This ETS may contain text concerning conformance
testing of the equipment to which it relates. This text should be considered as guidance only and does not
make this ETS mandatory.

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Blank page

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1 Scope
This European Telecommunication Standard (ETS) sets out the minimum performance requirements and
technical characteristics for ship earth stations capable of transmitting and receiving direct-printing
communications, and for Enhanced Group Call (EGC) equipment, as required by regulations IV/7, IV/8,
IV/9 and IV/10 of the 1974 International Convention for Safety of Life at Sea (SOLAS) [5] as amended,
concerning radio communications for the Global Maritime Distress and Safety System (GMDSS).
Minimum performance requirements for the Network Control Facility (NCF) are contained in ETS 300 459
[3].
NOTE: The only satellite system accepted by the SOLAS convention to provide LBRDC in the
GMDSS is INMARSAT-C at the date of publication.
For the purpose of this ETS the term "ship earth station" is used in order to align this ETS to ITU
terminology. It is defined as a Maritime Mobile Earth Station (MMES) operating in the GMDSS.
This ETS is applicable to the following classes of equipment:
- Class 0:
- a stand alone EGC receiver;
- Class 1:
- a basic ship earth station providing shore-to-ship and ship-to-shore message transfer only;
- Class 2:
- as for Class 1 but with EGC as an alternative to shore-to-ship transfer using a shared
receiver;
- Class 3:
- as for Class 1 but with EGC using an independent receiver.
This ETS covers equipment construction and performance testing. GMDSS requirements and tests are
included where they are supplementary to those contained in the equipment certification required in
subclause 5.1.
Frequency bands allocated by the Radio Regulations [1] to the Maritime Mobile Satellite Service (MMSS)
are as follows:
MMSS
Transmit frequencies 1 626,5 to 1 645,5 MHz
Receive frequencies 1 525,0 to 1 545,0 MHz
Requirements are specified in order to ensure the requirements of the GMDSS are met, to protect other
users of the frequency spectrum from unacceptable interference, for the purposes of general safety and
for the provision of protection of the ship earth station against electromagnetic interference from other
systems.

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2 Normative references
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] International Telecommunication Union, Radio Regulations, (WARC 1992).
[2] IEC 510-2-1 (1978): "Methods of measurement for radio equipment used in
satellite earth stations, Part 2: Measurement for sub-systems".
[3] ETS 300 459: "Satellite Earth Stations and Systems (SES); Network Control
Facilities (NCF) for Maritime Mobile Earth Stations (MMESs) operating in the
1,5/1,6 GHz and 11/12/14 GHz bands providing Low Bit Rate Data
Communications (LBRDCs)".
[4] CISPR 16-1 (First edition 1993-08): "Specification for radio disturbance and
immunity measuring apparatus methods. Part 1: Radio disturbance and
immunity measuring apparatus".
[5] Regulations IV/7, IV/8, IV/9 and IV/10 of the 1988 Amendments to the 1974
SOLAS convention as amended.
[6] NMEA 0183, version 2.01: "Standards for Interfacing Marine Electronic
Devices".
[7] IMO Resolution A.663(16): "Performance Standards for INMARSAT Standard-C
Ship Earth Stations Capable of Transmitting and Receiving Direct-Printing
Communications".
[8] IMO Resolution A.664(16): "Performance Standards for Enhanced Group Call
Equipment".
[9] IMO Resolution A.694(17): "General Requirements for Ship borne Radio
Equipment forming part of the Global Maritime Distress and Safety System
(GMDSS) and for Electronic Navigational Aids".
[10] ISO/R694 (1968): "Recommendations for the positioning of compasses,
Method B".
[11] EN 55022 (1994): "Limits and methods of measurements of radio disturbance
characteristics of information technology equipment".

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3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
ship earth station: A MMES on board a ship, (see clause 1).
nominated bandwidth: The nominated bandwidth encompasses all spectral elements of the
transmission which have a level greater than the specified spurious levels. The nominated bandwidth is
wide enough to take account of the transmit carrier frequency stability. The nominated bandwidth is within
the MMSS transmit frequency band within which the ship earth station operates. The bandwidth of the
ship earth station radio frequency transmission is nominated by the manufacturer and included in the data
sheet of the test report.
unwanted emissions: For the purpose of this ETS unwanted emissions are those falling outside the
nominated bandwidth.
performance check: A performance check consists of the following:
- for Class 0 equipment:
- reception of a distress priority EGC message;
- for Class 1 equipment:
- transmission of a distress message;
- for Class 2 and 3 equipment:
- transmission of a distress message and reception of a distress priority EGC message.
The transmission of a distress message is considered to be successful when:
- the Special Test Equipment (STE) has received the distress message and correctly interpreted it;
and
- the Equipment Under Test (EUT) has correctly indicated to the user, the acknowledgement of
receipt of the transmission from the STE.
The reception of a distress priority EGC message is considered to be successful when the EUT has
printed the message and the appropriate indications are provided to the user that a distress priority EGC
message has been received.
Special Test Equipment (STE): Specific equipment which enables the tests specified in this ETS to be
carried out.
Equipment Under Test (EUT): For the purposes of this ETS the EUT includes all units necessary for
intended operation.
This includes:
- the Externally Mounted Equipment (EME);
- the Internally Mounted Equipment (IME) including the data terminal equipment such as keyboard,
Visual Display Unit (VDU), printer, etc.;
- all interconnecting cables and power supply leads.

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3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
CMF Control and Monitoring Function
EGC Enhanced Group Call
EIRP Equivalent Isotropically Radiated Power
EMC Electro-Magnetic Compatibility
EME Externally Mounted Equipment
EUT Equipment Under Test
FARI Forward And Return Identity
GMDSS Global Maritime Distress and Safety System
IME Internally Mounted Equipment
IMO International Maritime Organisation
MMSS Maritime Mobile Satellite Service
NCF Network Control Facility
MMSI Maritime Mobile Service Identity
RF Radio Frequency
SOLAS Safety Of Life At Sea
STE Special Test Equipment
VDU Visual Display Unit
4 Tests
4.1 Special Test Equipment (STE)
The STE shall be supplied by the manufacturer or system provider. Since this test equipment will be
specific for the particular system, it is not possible to provide detailed specifications in this ETS. However,
the following baseline is provided:
- special test arrangements are required to simulate the satellite signal, thus enabling the ship earth
station to transmit, to allow measurement of transmission parameters;
- any specification of these special test arrangements which may have direct or indirect effects on
any specification of this ETS shall be clearly stated by the manufacturer;
- the STE shall prevent any radiation of signals, and it shall be certified by the system operator to be
suitable for such purpose;
- when using STE it shall be ensured that no transmission to the satellite occurs.
4.2 Test report
The test report shall contain:
- the value of the nominated bandwidth declared by the manufacturer;
- the results of the test;
- all parameters and operational conditions.

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5 Environmental tests
Purpose:
To ensure that the equipment is capable of continuous operation under conditions of various sea states,
vibration, humidity and temperature likely to be experienced in ships.
Specification:
Elements of the equipment shall be divided into two categories as follows, marked to indicate the class for
which it is intended:
- IME: equipment or units designed to be protected from the weather;
- EME: equipment or units intended to be exposed to the weather.
The equipment shall be subjected to the tests specified in annex A. These tests shall be carried out before
any other test specified in this ETS.
The manufacturer shall declare to which category each of the elements of the equipment belongs.
Verification:
The equipment shall successfully complete the performance checks under the conditions, defined in
annex A.
6 General requirements
6.1 Equipment certification
Purpose:
To ensure that the ship earth station has obtained certification for operating in the satellite system to be
used for communications in the GMDSS.
Specification:
The ship earth station shall have obtained certification for operating in the satellite system to be used for
communications in the GMDSS as required by IMO Resolution A.663(16) [7], section 2 or IMO Resolution
A.664(16) [8], section 2.
Verification:
By documentary evidence.
6.2 Power supply
6.2.1 Power supply reversal
Purpose:
To ensure that the equipment is protected from the effects of reversal of the power supply polarity.
Specification:
Means shall be incorporated for the protection of equipment from reversal of the power supply polarity.

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Verification:
The ship earth station shall be connected to a power supply of reversed polarity at nominal voltage.
If a protection fuse blows during this test it shall be replaced.
Normal power supply polarity shall then be restored and a performance check carried out successfully.
6.2.2 Power supply interruption
Purpose:
To ensure satisfactory operation after power supply interruption.
Specification:
Any interruption of the power supply of up to 60 seconds duration shall not require the equipment to be
manually re-initialised and shall not result in change or loss of stored operational parameters or in loss of
stored messages.
Verification:
With the equipment in the stand-by mode, and with a message stored, the power shall be removed for a
period of 60 seconds, and then restored.
The ship earth station shall automatically return to the stand-by mode. The stored operational parameters
and the stored message shall be retained unaltered.
The test shall be repeated with the power supply interruption being effected first during transmission and
then reception. For Class 0 equipment the test shall be effected only during reception.
6.3 Mechanical construction
Purpose:
Protection of persons and goods from insecure or unsafe equipment.
Specification:
The equipment shall, as far as practicable, be constructed of non-flammable materials and shall have
adequate strength to ensure safety.
Equipment shall be mechanically designed to minimise the possibility of injury to persons, for example,
from sharp edges or protruding corners.
Verification:
Verification shall be by visual inspection.

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6.4 Electrical safety
Purpose:
To ensure the protection and safety of persons against accidental access to dangerous voltages.
Specification:
Accidental access to dangerous voltages shall be prevented. All parts and wiring in which the direct or
alternating voltages or both, other than radio frequency voltages, combine to give a peak voltage greater
than 50 volts shall be protected against accidental access and shall be isolated automatically from all
sources of electrical energy when the protective covers are removed. Alternatively, the equipment shall be
so constructed that access to such voltages may only be gained after having used a tool for the purpose,
such as a spanner or screwdriver, and warning labels shall be prominently displayed both within the
equipment and on protective covers.
Means shall be provided for earthing exposed metallic parts of the equipment. This shall not cause any
terminal of the source of electrical energy to be earthed.
Verification:
Conformance to the electrical safety requirements shall be checked by visual inspection of the units.
6.5 Radio frequency radiation protection (classes 1, 2 and 3 only)
Purpose:
To ensure the protection of persons from potentially dangerous RF power densities.
Specification:
The radiating part of the equipment (which includes the exterior of any radome or other antenna enclosure
where fitted) shall be labelled with a warning notice which shall be clearly visible when the equipment is in
its normal operating configuration. This notice shall indicate the closest distance to the radiating part within
which a person may approach the equipment without experiencing radio frequency power density levels in
2
excess of 8 W/m , when under worst case conditions (e.g. maximum power, maximum on/off ratio),
averaged over a 6 minutes period. This notice shall also state that before approaching the radiating part
within any distance closer than that indicated, the ship earth station equipment shall be switched-off or
otherwise disabled so that it shall not transmit.
Where the radiating part is mounted in a position where it is not normally visible, further warning notices
shall be provided to be attached to the ship so as to be clearly visible to anyone attempting to reach the
radiating part of the equipment.
In the case where the antenna is enclosed in a radome, or other antenna enclosure, and when no RF
2
power density greater than 8 W/m , when under worst case conditions (e.g. maximum power, maximum
on/off ratio), averaged over a 6 minutes period, is produced outside of this radome, or antenna enclosure,
then it is not necessary to label the radiating part. Instead, the external surface of the radome or antenna
enclosure shall be clearly labelled with a warning that the ship earth station equipment shall be
switched-off, or otherwise disabled, so that it shall not transmit while any work requiring the removal of the
radome or antenna enclosure takes place.
Verification:
2
Verification of the distance below which RF power densities exist in excess of 8 W/m , when under worst
case conditions (e.g. maximum power, maximum on/off ratio) averaged over a 6 minutes period, shall be
by documentary evidence. The manufacturer shall quantify the worst case conditions.
Conformance with the labelling requirements of this subclause shall be demonstrated by visual inspection
of the external surface of the radome or antenna enclosure and, if relevant, an examination of the notices
provided by the manufacturer.

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6.6 Additional facilities
Purpose:
To ensure that the provision of facilities additional to those required for normal operation does not inhibit
normal operation.
Specification:
Where a facility is provided which is additional to the minimum requirements of this ETS, the operation or
malfunction of such a facility shall not degrade the performance of the equipment below these minimum
requirements.
Verification:
By documentary evidence or demonstration.
6.7 Integrity of GMDSS equipment
Purpose:
To protect the integrity of GMDSS operation.
Specification:
Any ancillary device which is part of the GMDSS equipment, such as VDU, keyboard and printer, shall be
provided with fixing arrangements to prevent unauthorised or unintended removal or disconnection.
These ancillaries shall, if available for use with non-GMDSS systems, revert immediately and
automatically or on a single prominently indicated and easily performed command, to service GMDSS
functional requirements.
Verification:
By demonstration and inspection.
6.8 Operating controls
Purpose:
Equipment shall be so constructed that it is capable of being operated properly and readily by a suitably
qualified member of a ship's staff.
Specification:
The number of operational controls, their design and manner of functions, location, arrangement and size
shall provide for simple, quick and effective operation. The controls shall be arranged in a manner which
minimises the chance of inadvertent operation.
All operational controls shall permit normal adjustments to be easily performed and shall be easy to
identify from the position at which the equipment is normally operated. Controls not required for normal
operations shall not be readily accessible.
The controls intended for initiating distress alerts, shall be clearly marked, dedicated to the function and
protected against inadvertent activation by at least two independent mechanical actions, e.g. lifting or
breaking a protective cover and pressing a button. Such controls shall not be a standard key of an ITU-T
digital input panel or of the keyboard provided with the equipment.

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When a distress alert transmission has been initiated, the equipment shall indicate the status of this
transmission.
It shall be possible to interrupt and initiate distress alerts at any time.
Adequate adjustable illumination may be provided in the equipment to enable identification of controls and
facilitate reading of indicators under low levels of ambient lighting. Means shall be provided for dimming to
extinction any equipment light source which is capable of interfering with navigation. If adequate
illumination is not provided this shall be stated in the test report.
The design of the equipment shall be such that misuse of the controls shall not cause damage to the
equipment or injury to persons.
Verification:
By documentary evidence and, where applicable, by inspection or demonstration.
6.9 User documentation
Purpose:
To ensure that adequate information is provided to enable the equipment to be properly installed,
operated and maintained.
Specification:
Operating handbooks shall be written at least in English and contain sufficient information to enable the
equipment to be properly installed and operated. If the equipment is so designed that fault diagnosis and
repair at component level is practicable, full circuit diagrams, component layouts and a component parts
list shall be provided. If
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