Draft ETSI EN 301 925 V1.5.0 (2016-12) EUROPEAN STANDARD Radiotelephone transmitters and receivers for the maritime mobile service operating in VHF bands; Technical characteristics and methods of measurement 2 Draft ETSI EN 301 925 V1.5.0 (2016-12) Reference REN/ERM-TG26-531 Keywords EMC, GMDSS, maritime, radio, telephony, VHF 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. 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ETSI 3 Draft ETSI EN 301 925 V1.5.0 (2016-12) Contents Intellectual Property Rights ................................................................................................................................ 8 Foreword ............................................................................................................................................................. 8 Modal verbs terminology .................................................................................................................................... 8 1 Scope ........................................................................................................................................................ 9 2 References ................................................................................................................................................ 9 2.1 Normative references ......................................................................................................................................... 9 2.2 Informative references ...................................................................................................................................... 10 3 Definitions, symbols and abbreviations ................................................................................................. 11 3.1 Definitions ........................................................................................................................................................ 11 3.2 Symbols ............................................................................................................................................................ 12 3.3 Abbreviations ................................................................................................................................................... 12 4 General requirements ............................................................................................................................. 13 4.1 Construction ..................................................................................................................................................... 13 4.2 DSC operation .................................................................................................................................................. 14 4.3 Controls and indicators ..................................................................................................................................... 14 4.4 Handset and loudspeaker .................................................................................................................................. 15 4.5 Safety precautions ............................................................................................................................................ 15 4.6 Labelling........................................................................................................................................................... 15 4.7 Warm up ........................................................................................................................................................... 15 4.8 Audio Processing .............................................................................................................................................. 16 5 Technical requirements .......................................................................................................................... 16 5.1 Switching time .................................................................................................................................................. 16 5.2 Class of emission and modulation characteristics ............................................................................................ 16 5.3 Multiple watch facilities ................................................................................................................................... 16 5.3.1 Additional performance standards .............................................................................................................. 16 5.3.2 Scanning characteristics .............................................................................................................................. 17 5.4 Interfaces .......................................................................................................................................................... 17 5.4.0 General ........................................................................................................................................................ 17 5.4.1 Audio frequency ......................................................................................................................................... 17 5.4.2 Digital interfaces ......................................................................................................................................... 18 5.5 Voyage data recorder interface ......................................................................................................................... 18 6 Test conditions, power sources and ambient temperatures .................................................................... 18 6.1 Test conditions ................................................................................................................................................. 18 6.2 Test power source ............................................................................................................................................. 18 6.3 Normal test conditions ...................................................................................................................................... 18 6.3.1 Normal temperature and humidity .............................................................................................................. 18 6.3.2 Normal power source voltage ..................................................................................................................... 19 6.3.2.1 Mains powered equipment .................................................................................................................... 19 6.3.2.2 Battery powered equipment .................................................................................................................. 19 6.3.2.3 Other power sources .............................................................................................................................. 19 6.4 Extreme test conditions .................................................................................................................................... 19 6.4.1 Extreme temperatures ................................................................................................................................. 19 6.4.2 Extreme values of power source voltage .................................................................................................... 19 6.4.2.1 Mains powered equipment .................................................................................................................... 19 6.4.2.2 Battery powered equipment .................................................................................................................