1、 ETSI EN 301 925 V1.5.1 (2017-10) Radiotelephone transmitters and receivers for the maritime mobile service operating in VHF bands; Technical characteristics and methods of measurement EUROPEAN STANDARD ETSI ETSI EN 301 925 V1.5.1 (2017-10) 2 Reference REN/ERM-TG26-531 Keywords EMC, GMDSS, maritime,
2、 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can
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7、hout the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETS
8、I registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI EN 301 925 V1.5.1 (2017-10) 3 Contents Intellectual Property Rights
9、 8g3Foreword . 8g3Modal verbs terminology 8g31 Scope 9g32 References 9g32.1 Normative references . 9g32.2 Informative references 10g33 Definitions, symbols and abbreviations . 11g33.1 Definitions 11g33.2 Symbols 12g33.3 Abbreviations . 12g34 General requirements . 13g34.1 Construction . 13g34.2 DSC
10、operation 13g34.3 Controls and indicators . 14g34.4 Handset and loudspeaker 14g34.5 Safety precautions 14g34.6 Labelling. 15g34.7 Warm up . 15g34.8 Audio Processing 15g35 Technical requirements 16g35.1 Switching time 16g35.2 Class of emission and modulation characteristics 16g35.3 Multiple watch fac
11、ilities . 16g35.3.1 Additional performance standards 16g35.3.2 Scanning characteristics 17g35.4 Interfaces 17g35.4.1 General 17g35.4.2 Audio frequency . 17g35.4.3 Digital interfaces . 17g35.5 Voyage data recorder interface . 17g36 Test conditions, power sources and ambient temperatures 18g36.1 Test
12、conditions . 18g36.2 Test power source . 18g36.3 Normal test conditions 18g36.3.1 Normal temperature and humidity 18g36.3.2 Normal power source voltage . 18g36.3.2.1 Mains powered equipment 18g36.3.2.2 Battery powered equipment 18g36.3.2.3 Other power sources 18g36.4 Extreme test conditions 19g36.4.
13、1 Extreme temperatures . 19g36.4.2 Extreme values of power source voltage 19g36.4.2.1 Mains powered equipment 19g36.4.2.2 Battery powered equipment 19g36.4.2.3 Other power sources 19g36.5 Procedure for tests at extreme temperatures . 19g37 General conditions of measurement . 19g37.1 Sequence of test
14、ing . 19g37.2 Test channels 20g37.3 Squelch . 20g37.4 Arrangements for test signals applied to the receiver input 20g3ETSI ETSI EN 301 925 V1.5.1 (2017-10) 4 7.5 Normal test modulation of the receiver wanted signal . 20g37.6 Arrangements for monitoring the receiver output 20g37.7 Arrangements for te
15、st signals applied to the transmitter input . 20g37.8 Normal test modulation of the transmitter 21g37.9 Arrangements for monitoring the transmitter output 21g37.10 Arrangements for test of DSC 21g37.11 Standard test signals for DSC . 21g37.12 Determination of symbol error ratio in the output of the
16、receiver 21g37.13 Reference bandwidths for spurious measurements . 21g37.14 Interpretation of the measurement results 22g38 Performance checks 22g38.1 Performance checks - introduction . 22g38.2 Performance check - transmitter frequency error . 22g38.3 Performance check - transmitter carrier power 2
17、3g38.4 Performance check - transmitter audio frequency harmonic distortion of the emission . 23g38.5 Performance check - receiver sensitivity 23g38.6 Performance check of DSC 23g39 Environmental tests 23g39.1 Procedure 23g39.2 Vibration test 24g39.2.1 Definition 24g39.2.2 Method of measurement . 24g
18、39.2.3 Requirement 24g39.3 Temperature tests . 24g39.3.1 Introduction. 24g39.3.2 General procedure . 25g39.3.3 Dry heat 25g39.3.3.1 Definition 25g39.3.3.2 Method of measurement 25g39.3.3.3 Requirement 25g39.3.4 Damp heat . 25g39.3.4.1 Definition 25g39.3.4.2 Method of measurement 25g39.3.4.3 Requirem
19、ent 25g39.3.5 Low temperature cycle 25g39.3.5.1 Definition 25g39.3.5.2 Method of measurement 26g39.3.5.3 Requirement 26g310 Transmitter . 26g310.1 General conditions 26g310.2 Frequency error 26g310.2.1 Definition 26g310.2.2 Method of measurement . 26g310.2.3 Limits 26g310.3 Carrier power 26g310.3.1
20、Definitions 26g310.3.2 Method of measurement . 27g310.3.3 Limits 27g310.3.3.1 General 27g310.3.3.2 Normal test conditions limits 27g310.3.3.3 Extreme test conditions limits . 27g310.4 Frequency deviation . 27g310.4.1 Definition 27g310.4.2 Maximum permissible frequency deviation 27g310.4.2.1 Method o
21、f measurement 27g310.4.2.2 Limits 28g310.4.3 Reduction of frequency deviation at modulation frequencies above 3 kHz 28g310.4.3.1 Method of measurement 28g310.4.3.2 Limits 28g310.5 Sensitivity of the modulator including the microphone . 29g3ETSI ETSI EN 301 925 V1.5.1 (2017-10) 5 10.5.1 Definition 29
22、g310.5.2 Method of measurement . 29g310.5.3 Limits 29g310.6 Audio frequency response 29g310.6.1 Definition 29g310.6.2 Method of measurement . 30g310.6.3 Limits 30g310.7 Audio frequency harmonic distortion of the emission 30g310.7.1 Definition 30g310.7.2 Method of measurement . 31g310.7.3 Limits 31g3
23、10.8 Adjacent channel power . 31g310.8.1 Definition 31g310.8.2 Method of measurement . 31g310.8.3 Limits 32g310.9 Conducted spurious emissions conveyed to the antenna 32g310.9.1 Definition 32g310.9.2 Method of measurement . 32g310.9.3 Limit . 32g310.10 Residual modulation of the transmitter 32g310.1
24、0.1 Definition 32g310.10.2 Method of measurement . 32g310.10.3 Limit . 33g310.11 Transient frequency behaviour of the transmitter . 33g310.11.1 Definition 33g310.11.2 Method of measurement . 33g310.11.3 Limits 34g310.12 Radiated spurious emission 36g310.12.1 Definition 36g310.12.2 Method of measurem
25、ent . 36g310.12.3 Limits 37g311 Transmitter with integrated DSC encoder 37g311.1 General . 37g311.2 Frequency error (carrier) 37g311.2.1 Definition 37g311.2.2 Method of measurement . 37g311.2.3 Limits 38g311.3 Frequency error (demodulated signal) 38g311.3.1 Definition 38g311.3.2 Method of measuremen
26、t . 38g311.3.3 Limits 38g311.4 Carrier Power . 38g311.4.1 Definition 38g311.4.2 Method of measurement . 38g311.4.3 Limits 38g311.4.3.1 Normal test conditions 38g311.4.3.2 Extreme test conditions . 39g311.5 Modulation index . 39g311.5.1 Definition 39g311.5.2 Method of measurement . 39g311.5.3 Limits
27、39g311.6 Modulation rate 39g311.6.1 Definition 39g311.6.2 Method of measurement . 39g311.6.3 Limits 39g311.7 Residual modulation . 39g311.7.1 Definition 39g311.7.2 Method of measurement . 39g311.7.3 Limits 40g311.8 Modulator attack time 40g311.8.1 Definition 40g3ETSI ETSI EN 301 925 V1.5.1 (2017-10)
28、 6 11.8.2 Method of measurement . 40g311.8.3 Limit . 40g311.9 Adjacent channel power . 40g311.9.1 Definition 40g311.9.2 Method of measurement . 40g311.9.3 Limits 41g311.10 Conducted spurious emissions . 41g311.11 Testing of free channel transmission on DSC channel 70 41g311.11.1 Definition 41g311.11
29、.2 Method of measurement . 41g311.11.3 Requirement 41g311.12 Generated DSC call sequences . 42g312 Receiver 42g312.1 Harmonic distortion and rated audio output power 42g312.1.1 Definition 42g312.1.2 Methods of measurement 42g312.1.3 Limits 42g312.2 Audio frequency response 42g312.2.1 Definition 42g3
30、12.2.2 Method of measurement . 43g312.2.3 Limits 43g312.3 Maximum usable sensitivity . 44g312.3.1 Definition 44g312.3.2 Method of measurement . 44g312.3.3 Limits 44g312.4 Amplitude characteristic of the receiver . 44g312.4.1 Definition 44g312.4.2 Method of measurement . 44g312.4.3 Limits 44g312.5 Co
31、-channel rejection. 45g312.5.1 Definition 45g312.5.2 Method of measurement . 45g312.5.3 Limit . 45g312.6 Adjacent channel selectivity . 45g312.6.1 Definition 45g312.6.2 Method of measurement . 45g312.6.3 Limits 46g312.7 Spurious response rejection 46g312.7.1 Definition 46g312.7.2 Method of measureme
32、nt . 46g312.7.2.1 Introduction to the method of measurement 46g312.7.2.2 Method of search over the “limited frequency range“ . 47g312.7.2.3 Method of measurement 47g312.7.3 Limit . 47g312.8 Intermodulation response . 47g312.8.1 Definition 47g312.8.2 Method of measurement . 48g312.8.3 Limit . 48g312.
33、9 Blocking or desensitization 48g312.9.1 Definition 48g312.9.2 Method of measurement . 48g312.9.3 Limit . 48g312.10 Conducted spurious emissions . 49g312.10.1 Definition 49g312.10.2 Method of measurement . 49g312.10.3 Limit . 49g312.11 Receiver noise and hum level . 49g312.11.1 Definition 49g312.11.
34、2 Method of measurement . 49g312.11.3 Limit . 49g312.12 Squelch operation . 50g3ETSI ETSI EN 301 925 V1.5.1 (2017-10) 7 12.12.1 Description 50g312.12.2 Squelch audio muting . 50g312.12.2.1 Definition 50g312.12.2.2 Method of measurement 50g312.12.2.3 Limits 50g312.12.3 Squelch operating level . 50g31
35、2.12.3.1 Definition 50g312.12.3.2 Method of measurement 50g312.12.3.3 Limits 50g312.12.4 Squelch hysteresis . 51g312.12.4.1 Definition 51g312.12.4.2 Method of measurement 51g312.12.4.3 Limit 51g312.13 Multiple watch characteristics 51g312.13.1 Definitions 51g312.13.2 Method of measurement . 51g312.1
36、3.3 Limits 52g312.14 Radiated spurious emissions. 52g312.14.1 Definition 52g312.14.2 Method of measurement . 52g312.14.3 Limits 53g313 Receiver with integrated DSC decoder 53g314 Duplex operation 53g314.1 Introduction 53g314.2 Receiver desensitization with simultaneous transmission and reception 54g
37、314.2.1 Definition 54g314.2.2 Method of measurement . 54g314.2.3 Limits 54g314.3 Duplex transceiver internal mixing 54g314.3.1 Definition 54g314.3.2 Method of measurement . 54g314.3.3 Limits 55g3Annex A (normative): Measuring receiver for adjacent channel power measurement . 56g3A.1 General descript
38、ion of power measuring receiver 56g3A.2 IF filter 56g3A.3 Attenuation indicator 57g3A.4 RMS value indicator . 57g3A.5 Oscillator and amplifier 57g3Annex B (normative): Protocol for the IEC 61162-1 commands Frequency Set Information (FSI) 58g3B.1 Frequency Set Information (FSI) . 58g3Annex C (informa
39、tive): DSC test calls 59g3C.1 Interoperability tests . 59g3History 60g3ETSI ETSI EN 301 925 V1.5.1 (2017-10) 8 Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential
40、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
41、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) whic
42、h 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 c
43、onveys 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 European Standard (EN) has been produced by ETSI T
44、echnical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). National transposition dates Date of adoption of this EN: 16 October 2017 Date of latest announcement of this EN (doa): 31 January 2018 Date of latest publication of new National Standard or endorsement of this EN (do
45、p/e): 31 July 2018 Date of withdrawal of any conflicting National Standard (dow): 31 July 2019 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 t
46、he 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 ETSI EN 301 925 V1.5.1 (2017-10) 9 1 Scope The present document specifies the minimum requirements for shipborne radio transmit
47、ters and receivers for fixed installations operating in the VHF frequency bands between 156 MHz and 174 MHz used by the maritime mobile service, using both 25 kHz and 12,5 kHz channels and capable of Radiotelephony and Digital Selective Calling communications within the Global Maritime Distress and
48、Safety System. The present document incorporates the requirements of the relevant resolutions of the International Maritime Organization (IMO) and is primarily intended to specify equipment suitable for fitting to ships subject to the SOLAS Convention i.2 and complying with the Council Directive 201
49、4/90/EU i.3 of 23 July 2014 on marine equipment (the European Marine Equipment Directive). The present document does not address the testing of ancillary equipment on a stand-alone basis, i.e. separately from the radio equipment with which it is to be used. 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)
