ETSI ETS 300 372 ed.1 (1996-05)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Radio Equipment and Systems (RES); Technical characteristics and methods of measurement for maritime float-free satellite Emergency Position Indicating Radio Beacon (EPIRB) operating in the 1,6 GHz band through geostationary satellites33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:ETS 300 372 E13SIST ETS 300 372:1999en01-PDUHF-19993SIST ETS 300 372:1999SLOVENSKI
STANDARD
EUROPEANETS 300 372TELECOMMUNICATIONMay 1996STANDARDSource: ETSI TC-RESReference: DE/RES-01009ICS:33.060.20Key words:EPIRB, maritime, radio, satelliteRadio Equipment and Systems (RES);Technical characteristics and methods of measurement formaritime float-free satellite Emergency Position Indicating RadioBeacon (EPIRB) operating in the 1,6 GHz bandthrough geostationary satellitesETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 92 94 42 00 - Fax: +33 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1996. All rights reserved.SIST ETS 300 372:1999

Page 2ETS 300 372: May 1996Whilst 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.SIST ETS 300 372:1999

Page 3ETS 300 372: May 1996ContentsForeword.71Scope.92Normative references.93Definitions and abbreviations.103.1Definitions.103.2Abbreviations.104General requirements.104.1Scope.104.2Operating conditions.114.3Remote control.114.4Accessories.114.5Mechanical and electrical construction.114.6Indication of activation.124.7Lanyard.124.8Colour and surface quality.124.9Low duty cycle light.124.10Frequencies.124.11Controls.124.11.1General.124.11.2Manual activation and deactivation.124.11.3Satellite EPIRB test.134.12Labelling.134.13Operating instructions.134.14Power source.144.15Antenna characteristics.145Test conditions, power sources and ambient temperatures.145.1General.145.2Test fixture.145.3Test power source.155.4Normal test conditions.155.4.1Normal temperature and humidity.155.4.2Normal test voltage.155.5Extreme test conditions.155.5.1Extreme temperatures.155.5.1.1Upper extreme temperature.155.5.1.2Lower extreme temperature.155.5.2Extreme test voltages.155.5.2.1Upper extreme test voltages.155.5.2.2Lower extreme test voltage.155.6Procedure for tests at extreme temperatures.155.7Test sequence.155.8Test frequencies.165.9Measurement uncertainty.166Environmental tests.166.1General.166.2Performance check.166.3Vibration test.176.3.1Definition.176.3.2Method of measurement.176.3.3Requirement.176.4Temperature tests.17SIST ETS 300 372:1999

Page 4ETS 300 372: May 19966.4.1Definition.176.4.2Dry heat cycle.186.4.2.1Internally mounted equipment.186.4.2.1.1Method of measurement.186.4.2.1.2Requirement.186.4.2.2Externally mounted equipment.186.4.2.2.1Method of measurement.186.4.2.2.2Requirement.186.4.3Damp heat cycle.186.4.3.1Method of measurement.186.4.3.2Requirement.196.4.4Low temperature cycle.196.4.4.1Internally mounted equipment.196.4.4.1.1Method of measurement.196.4.4.1.2Requirement.196.4.4.2Externally mounted equipment.196.4.4.2.1Method of measurement.196.4.4.2.2Requirement.196.5Ruggedness test.206.5.1Definition.206.5.2Method of measurement.206.5.3Requirements.206.6Hose stream test.206.6.1Definition.206.6.2Method of measurement.206.6.3Requirements.206.7Buoyancy test.206.7.1Definition.206.7.2Method of measurement.216.7.3Requirements.216.8Stability test.216.8.1Definition.216.8.2Method of measurement.216.8.3Limit.216.9Corrosion test.216.9.1Definition.216.9.2Method of measurement.216.9.3Requirements.226.10Drop test into water.226.10.1Definition.226.10.2Method of measurement.226.10.3Requirement.226.11Immersion test.226.11.1Definition.226.11.2Method of measurement.226.11.3Requirement.236.12Thermal shock.236.12.1Definition.236.12.2Method of measurement.236.12.3Requirement.236.13Solar radiation test.236.13.1Definition.236.13.2Method of measurement.236.13.3Requirements.246.14Oil resistance test.246.14.1Definition.246.14.2Method of measurement.246.14.3Requirements.246.15Antenna mismatch.256.15.1Definition.256.15.2Method of measurement.256.15.3Requirement.25SIST ETS 300 372:1999

Page 5ETS 300 372: May 19967Transmitter.257.1Carrier frequency.257.1.1Definition.257.1.2Method of measurement.257.1.3Limit.257.2Radiated power.257.2.1Definition.257.2.2Method of measurement.267.2.3Limit.267.3Power in test fixture.267.3.1Definition.267.3.2Method of measurement.267.3.3Limit.267.4Spurious emissions.267.4.1Definition.267.4.2Method of measurement.277.4.3Limit.277.5Frequency shift.277.5.1Definition.277.5.2Method of measurement.277.5.3Limit.277.6Bit-clock stability.277.6.1Definition.277.6.2Method of measurement.277.6.3Limit.277.7Transmission period.287.7.1Definition.287.7.2Method of measurement.287.7.3Limit.287.8Effective luminous intensity of the low duty cycle light.287.8.1Definition.287.8.2Method of measurement.287.8.3Limit.288Release mechanism.288.1General.288.1.1Design requirements.288.1.2Operation.298.1.3Temperature range.298.1.4Labelling.298.2Automatic release of the satellite EPIRB.298.2.1Definition.298.2.2Method of measurement.298.2.3Requirement.30Annex A (normative):121,5 MHz Homing Transmitter.31A.1General.31A.1.1Class of emission.31A.1.2Modulation frequency.31A.1.3Transmitter duty cycle.31A.1.4Sweep repetition rate.31A.2Frequency error.31A.2.1Definition.31A.2.2Method of measurement.31A.2.3Limit.31A.3Modulation duty cycle.31A.3.1Definition.31A.3.2Method of measurement.31A.3.3Limit.32SIST ETS 300 372:1999

Page 6ETS 300 372: May 1996A.4Modulation factor.32A.4.1Definition.32A.4.2Method of measurement.32A.4.3Limit.32A.5Peak effective radiated power.32A.5.1Definition.32A.5.2Method of measurement.32A.5.3Limit.32A.6Spurious emissions.33A.6.1Definition.33A.6.2Method of measurement.33A.6.3Limit.33History.34SIST ETS 300 372:1999

Page 7ETS 300 372: May 1996ForewordThis European Telecommunication Standard (ETS) has been produced by the Radio Equipment andSystems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).Transposition datesDate of adoption of this ETS:31 May 1996Date of latest announcement of this ETS (doa):31 August 1996Date of latest publication of new National Standardor endorsement of this ETS (dop/e):29 February 1997Date of withdrawal of any conflicting National Standard (dow):29 February 1997Every ETS prepared by ETSI is a voluntary standard. This ETS contains text concerning conformancetesting of the equipment to which it relates. This text should be considered only as guidance and does notmake this ETS mandatory.SIST ETS 300 372:1999

Page 8ETS 300 372: May 1996Blank pageSIST ETS 300 372:1999

Page 9ETS 300 372: May 19961ScopeThis European Telecommunication Standard ETS specifies the minimum performance requirements,technical characteristics and conformance testing requirements of a satellite Emergency PositionIndicating Radio Beacon (EPIRB) operating in the Inmarsat geostationary satellite system as described inRegulation IV subclause 7.1.6 of the 1988 amendments to the 1974 International Convention for Safety ofLife at Sea (SOLAS) [2].The requirements of this ETS are in addition to the requirements of Inmarsat-E System DefinitionManual [11].This ETS comprises the relevant requirements of the Radio Regulations [1], International MaritimeOrganisation (IMO) Resolutions A.658(16) [3], A.661(16) [4], A.662(16) [5], A.689(17) [6], A.694(17) [7],A.702(17) [8], ITU-R Recommendation M.632-2 [9], and Regulation IV-7.1.6 of the 1988 amendments tothe 1974 SOLAS Convention [2].This ETS covers the following categories of satellite EPIRBs and release mechanism:-satellite EPIRB with position updating from the ship's navigational installation and with an integral9 GHz radar transponder;-satellite EPIRB with position updating from an integral facility for automatic position updating;-additionally, the satellite EPIRB may include a 121,5 MHz homing transmitter.To further meet the requirements of Regulation IV subclauses 10.1.4.3 and 10.2.3.2.2 of the 1988amendments to the 1974 SOLAS Convention [2], with regard to remote activation for both categories, anadditional remote control unit for remote activation and for feeding the satellite EPIRB with "nature ofdistress" information is specified.2Normative referencesThis European Telecommunication Standard ETS incorporates by dated or undated reference provisionsfrom other publications. These normative references are cited at the appropriate place in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions of any ofthese publications apply to this ETS only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies.[1]International Telecommunication Union: "Radio Regulations".[2]International Convention for Safety Of Life At Sea Convention (SOLAS) (1974),as amended 1988 (GMDSS).[3]IMO Resolution A.658(16): "Use and fitting of retro-reflective materials onlife-saving appliances".[4]IMO Resolution A.661(16): "Performance for float free satellite emergencyposition-indicating radio beacons operating through the geostationaryINMARSAT satellite system on 1,6 GHz".[5]IMO Resolution A.662(16): "Performance standards for float free release andactivation arrangements for emergency radio equipment".[6]IMO Resolution A.689(17): "Testing of life-saving appliances".[7]IMO Resolution A.694(17): "General requirements for ship borne radioequipment forming part of the Global Maritime Distress and Safety System(GMDSS) and for electronic navigational aids".[8]IMO Resolution A.702(17): "Radio maintenance guidelines for the GlobalMaritime Distress and Safety System (GMDSS) related to sea areas A3 andA4".SIST ETS 300 372:1999

Page 10ETS 300 372: May 1996[9]ITU-R Recommendation M.632-2: "Transmission characteristics of a satelliteemergency position-indicating radiobeacon (satellite EPIRB) system operatingthrough geostationary satellites in the 1,6 GHz band".[10]ISO Recommendation 694: Method B.[11]Inmarsat-E System Definition Manual.[12]ETR 028: "Radio Equipment and Systems (RES); Uncertainties in themeasurement of mobile radio equipment characteristics".3Definitions and abbreviations3.1DefinitionsFor the purposes of this ETS, the following definitions apply:satellite EPIRB: Earth station in the Mobile Satellite Service (MSS) the emissions of which are intendedto facilitate Search and Rescue (SAR) operations.remote control unit: A unit which allows the satellite EPIRB, while mounted in the release mechanism, tobe activated from a position other than its installation point.release mechanism: A fixture which allows the satellite EPIRB to float free automatically.equipment: A satellite EPIRB, its release mechanism and the remote control unit.internally mounted equipment: Units of the equipment, e.g. remote control unit, intended for internal(inside) mounting.externally mounted equipment: Units of the equipment intended for external (outside) mounting.3.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:eirpeffective isotropically radiated powerEPIRBEmergency Position Indicating Radio BeaconFSKFrequency Shift KeyingGMDSSGlobal Maritime Distress and Safety SystemIMOInternational Maritime OrganisationInmarsatInternational Mobile Satellite OrganizationMSSMobile Satellite ServiceMMSIMaritime Mobile Station Identitynmnautical milePERPPeak Effective Radiated PowerRHCPRight Hand Circular PolarisedSARSearch and RescueSARTSearch and Rescue Radar TransponderSOLASInternational Convention for Safety of Life at Sea4General requirements4.1ScopeThe manufacturer shall declare that compliance to the requirements of clause 4 is achieved and shallprovide relevant documentation.SIST ETS 300 372:1999

Page 11ETS 300 372: May 19964.2Operating conditionsThe satellite EPIRB shall be mounted in a release mechanism (see clause 8) which automatically releasesthe satellite EPIRB when submerged in water. When so released, the satellite EPIRB shall float to thesurface and start transmitting automatically, irrespective of the setting of any controls.The satellite EPIRB shall be designed to operate when floating in the sea but shall also operatesatisfactorily on board a ship and in a survival craft.The general construction and method of operation shall provide a high degree of proof against inadvertentoperation, whilst still providing a simple means of operation in an emergency.The satellite EPIRB shall be capable of being carried by one person, shall be designed as one integral unitand shall incorporate a permanently attached antenna. If the satellite EPIRB is designed to be poweredfrom the ship's power supply when activated while still in the release mechanism, there shall be anautomatic switch-over to the internal battery if the ship's power supply fails. After release it shall derive itsenergy from a battery forming a part of the equipment.4.3Remote controlThe satellite EPIRB may be operated also from a remote control. From the remote control it shall bepossible to:-activate the satellite EPIRB from a dedicated distress button which shall be clearly identified and beprotected against inadvertent operation. The distress alert initiation shall require at least twoindependent actions. The status of a distress alert transmission shall be indicated on the remotecontrol panel;-interrupt and initiate distress alerts at any time;-insert nature-of-distress information;-check the satellite EPIRB as specified in subclause 4.11.3.4.4AccessoriesThe satellite EPIRB shall include either:-an integral facility for position updating; or-a 9 GHz radar transponder; or-both.These accessories shall fulfil the relevant requirements of the appropriate standard.The satellite EPIRB may also include a 121,5 MHz homing transmitter. If a 121,5 MHz transmitter isincluded, it shall fulfil the requirements given in annex A.When the satellite EPIRB is activated manually, automatically or by means of a remote control unit, allaccessories of the satellite EPIRB shall automatically be put into operation.Malfunction of any of the accessories shall not degrade the function of any other accessories or thesatellite EPIRB distress alerting transmitter.4.5Mechanical and electrical constructionThe exterior of the satellite EPIRB shall have no sharp edges or projections which could easily damageinflatable rafts or injure personnel.The fixed portion of the distress message shall be stored in such a way that it will not be affected byremoval of all power sources.SIST ETS 300 372:1999

Page 12ETS 300 372: May 1996The satellite shall be so designed as to operate under relative wind speeds up to 100 knots.4.6Indication of activationThe satellite EPIRB shall be provided with either an audible or a visual indication or both to show thatsignals are being transmitted. The visual indication shall be clearly discernible at a distance of 1 m underlight conditions ranging from darkness to direct sunlight. This indication shall be given at all places fromwhich a distress alert can be initiated.The audible indication shall produce a sound level of at least 80 dBA at a distance of 1 m.4.7LanyardThe satellite EPIRB shall be provided with a firmly attached lanyard in order that the equipment may betethered in use. The lanyard shall be capable of floating in sea water and shall be arranged so as toprevent it being trapped in the ship's structure when floating free.4.8Colour and surface qualityThe satellite EPIRB shall be finished with highly visible yellow or orange colour and shall be fitted with aband of retro-reflective material, which shall meet the performance requirements ofIMO Resolution A.658(16) [3] at least 25 mm wide, and which shall encircle that part of the satelliteEPIRB's surface which is normally protruding above the waterline.4.9Low duty cycle lightThe satellite EPIRB shall be provided with a low duty cycle light to indicate its position for survivors nearbyand the rescue unit.The low duty cycle light shall fulfil the requirements of subclause 7.8.This light may also be used to fulfil the requirements of subclause 4.6, e.g. by using a higher flashing rate,when signals are being transmitted.4.10FrequenciesUntil all satellites of the Inmarsat first generation space segment (spare and operational) are completelyreplaced, all types of L-band satellite EPIRBs shall transmit sequentially on both the frequency bands1 644,3 MHz to 1 644,5 MHz and 1 645,6 MHz to 1 645,8 MHz, corresponding to Inmarsat first andsubsequent-generation space segment.After full implementation of the second-generation Inmarsat space segment (spare and operational, asnotified by Inmarsat), emissions from new L-band satellite EPIRBs shall be limited to1 645,6 MHz - 1 645,8 MHz.4.11Controls4.11.1GeneralAll controls shall be of sufficient size for simple and satisfactory operation and also be capable of beingoperated by personnel wearing gloves for immersion suits in accordance with Regulation III/33 of the 1988amendments to the 1974 SOLAS Convention [2].4.11.2Manual activation and deactivationIt shall be possible to activate the satellite EPIRB manually by a dedicated distress alert activator.The dedicated activator shall be clearly identified and be protected against inadvertent operation.The manual distress alert initiation shall require at least two independent actions.SIST ETS 300 372:1999

Page 13ETS 300 372: May 1996After manual or automatic activation it shall be possible to manually deactivate the satellite EPIRB in arepeatable manner.The satellite EPIRB shall not be automatically activated after being manually removed from the releasemechanism.4.11.3Satellite EPIRB testThe satellite EPIRB shall include test facilities so that:-a manually-activated test to verify the distress alert transmitter output and achievement of thefrequency lock can be performed;-the correct functioning of the 9 GHz Search and Rescue Transponder (SART), if included in thesatellite EPIRB, can be verified, e.g. using a ship's radar;-position information can be verified if the satellite EPIRB includes an integral facility for automaticposition updating. A signal output port should be provided to permit this.The duration of the manually-activated test of transmitter output and achievement of frequency lock shallbe less than five seconds to ensure that no distress alert is transmitted and the transmission shallterminate automatically even if the test function is kept activated.After the test, the satellite EPIRB shall automatically return to normal mode.4.12LabellingThe satellite EPIRB shall be provided with a label, or labels, affixed to the exterior of the satellite EPIRBcontaining the following information, at least in the English language:-type designation, serial number, and the type of battery specified by the manufacturer for use in theequipment;-compass-safe distance;-adequate instruction to enable manual activation and deactivation;-a warning to the effect that the satellite EPIRB shall not be operated except in an emergency;-the date on which the battery will need to be replaced. Simple means shall be provided for changingthis date when the battery is replaced;-space on which the name and the Maritime Mobile Station Identity (MMSI) of the ship can berecorded;-any other identification that may be required by national administrations, (e.g. type approvalidentification).4.13Operating instructionsThe equipment manufacturer shall provide all instructions and information regarding:-stowage;-installation;-proper operation;-limitation of self-testing to the minimum necessary to ensure confidence in the operation of thesatellite EPIRB;-battery replacement; andSIST ETS 300 372:1999

Page 14ETS 300 372: May 1996-the avoidance of false alarms.4.14Power sourceThe battery shall have sufficient capacity to operate:-the distress-alerting transmitter for four hours in accordance with ITU-R RecommendationM.632-2 [9], or for at least 48 hours if integral facilities are included for automatic position updating;and-any other facilities (e.g. SART and flashing light) for at least 48 hours.The battery life as defined by its expiry date shall be at least three years.The battery shall be clearly and durably marked with the expiry date of the battery shelf life.It shall not be possible to connect the battery with the reversed polarity.4.15Antenna characteristicsThe following antenna characteristics are defined for elevation angles greater than 0° and less than 90°:pattern:hemispherical;polarisation:Right Hand Circular Polarised (RHCP);axial ratio:< or = 5 dB for ± 90° from zenith and 0° to 360° in azimuth.5Test conditions, power sources and ambient temperatures5.1GeneralAdequate information shall be provided to enable the equipment to be properly set up, maintained andoperated during the conformance testing.Tests shall be carried out under normal and extreme test conditions, unless otherwise stated.5.2Test fixtureThe manufacturer shall supply an external test fixture permitting relative measurements to be made on thesubmitted sample. This test fixture shall provide a 50 W radio frequency terminal at the workingfrequencies of the equipment.The performance characteristics of the test fixture under normal and extreme conditions shall be:-the coupling loss shall be as low as possible and in no case greater than 30 dB;-the variation of coupling loss with frequency shall not cause errors in the measurements exceeding2 dB;-the coupling device shall not incorporate any non-linear elements;-the power consumption of the satellite EPIRB shall not substantially change when fitted in the testfixture.Any connections provided on the equipment in order to facilitate relative measurements shall not affect theperformance of the equipment either in the test fixture or when making measurements involving the use ofradiated fields.The test fixture supplier shall provide guidance as to the minimum distance the test fixture may beoperated from other metallic objects without a significant effect being caused to the results obtained (i.e.the minimum size of environmental chamber needed).SIST ETS 300 372:1999

Page 15ETS 300 372: May 19965.3Test power sourceThe battery of the equipment shall be replaced by a test power source capable of producing normal andextreme test voltages as specified in subclauses 5.4.2 and 5.5.2, unless otherwise stated.For conformance testing, three sets of batteries shall be submitted.5.4Normal test conditions5.4.1Normal temperature and humidityNormal temperature and humidity conditions for tests shall be a combination of temperature and humiditywithin the following limits:-temperature:+ 15°C to + 35°C;-relative humidity:20 % to 75 %.5.4.2Normal test voltageThe normal test voltage shall be determined in each case, and shall be the voltage corresponding to thevoltage that the battery supplies under normal temperature and humidity, at a load equal to that of theequipment.5.5Extreme test conditions5.5.1Extreme temperatures5.5.1.1Upper extreme temperatureFor tests at the upper extreme temperature, measurements shall be made at a temperature of + 55°C.5.5.1.2Lower extreme temperatureFor tests at the lower extreme temperature, measurements shall be made at a temperature of - 20°C.5.5.2Extreme test voltages5.5.2.1Upper extreme test voltagesThe upper extreme test voltage shall be determined in each case and shall be the voltage correspondingto the voltage that the battery gives under upper extreme temperature with a load equal to that of theequipment.5.5.2.2Lower extreme test voltageThe lower extreme test voltage shall be determined in each case and shall be the voltage correspondingto the voltage that the battery supplies under the lower extreme temperature with a load equal to that ofthe equipment after 48 hours of operation.5.6Procedure for tests at extreme temperaturesThe satellite EPIRB shall be switched off during the temperature stabilising period.Before tests are carried out, the equipment shall have obtained thermal balance in the test chamber andshall have been switched on for a period of 5 minutes.5.7Test sequenceAll tests shall be performed on a single equipment. The tests shall be carried out in the order described inthis ETS.SIST ETS 300 372:1999

Page 16ETS 300 372: May 19965.8Test frequenciesFor the purpose of conformance testing, the equipment shall be set to transmit on the frequency1 645 799 800 Hz5.9Measurement uncertaintyTable 1: Absolute measurement uncertainty: maximum valuesParameterMeasurement uncertaintyRF frequency± 1 x 10-7RF power± 0,75 dBFrequency deviation± 5 %Radiated emission± 6 dBFor the test methods according to this ETS the uncertainty figures in table 1 are valid to a confidence levelof 95 % calculated according to the methods described in ETR 028 [12].6Environmental tests6.1GeneralEnvironmental tests specified in this clause shall be carried out before any other tests. The satellite EPIRBshall be installed in its release mechanism .During the environmental tests, the satellite EPIRB shall be connected to the battery (see subclause 4.14).6.2Performance checkFor the purpose of this ETS, the expression "performance check" shall be taken to mean:a)for the satellite EPIRB:-measurement of the carrier frequency of the emission, by using the test fixture and themethod of measurement and calculation method specified in subclause 7.1.2. The calculatedcarrier frequency shall be within ± 1,645 kHz of the assigned frequency;-measurement of the transmitter output power by using the test fixture. The transmitter outputpower shall be within + 2 dB/- 3 dB of the power measured in subclause 7.2 adjusted with thecoupling loss of the test fixture;-check of the operation of the low duty cycle light;-check of the position information when possible, if an automatic position updating facility isincluded. The position information shall be within ± 1 nm of the correct, calibrated position ofthe test site;-if a 9 GHz radar transponder is included, check of the triggering of the transponder wheninterrogated by a signal corresponding to a 9 GHz radar signal with a level 6 dB above thesensitivity level of the transponder;-check of the carrier frequency of the 121,5 MHz transmitter, if included. The carrier frequencyshall be 121,5 MHz ± 3,5 kHz;b)for the remote control unit:-check of its ability to activate the satellite EPIRB;c)for the release mechanism:-check of proper functioning by use of the test facility specified in subclause 8.1.2.SIST ETS 300 372:1999

Page 17ETS 300 372: May 19966.3Vibration test6.3.1DefinitionThe immunity against the effects of vibration is th
...