ETSI EN 301 178 V1.1.1 (1999-05)

SLOVENSKI STANDARD
SIST EN 301 178:2000
01-januar-2000

(OHNWURPDJQHWQD]GUXåOMLYRVW(0&LQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP(50

characteristics and methods of measurement for portable Very High Frequency (VHF)

radiotelephone equipment for the maritime mobile service operating in the VHF bands

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

Intellectual Property Rights ............................................................................................................................... 7

Foreword............................................................................................................................................................ 7

1 Scope........................................................................................................................................................ 8

2 References ............................................................................................................................................... 8

3 Definitions, symbols and abbreviations................................................................................................... 9

3.1 Definitions ......................................................................................................................................................... 9

3.2 Symbols ............................................................................................................................................................. 9

3.3 Abbreviations..................................................................................................................................................... 9

4 General and operational requirements..................................................................................................... 9

4.1 Construction....................................................................................................................................................... 9

4.2 Controls and indicators .................................................................................................................................... 10

4.3 Microphone and loudspeaker........................................................................................................................... 11

4.4 Safety precautions............................................................................................................................................ 11

4.5 Labelling.......................................................................................................................................................... 11

5 Technical requirements.......................................................................................................................... 11

5.1 Switching time ................................................................................................................................................. 11

5.2 Class of emission and modulation characteristics............................................................................................ 11

6 General conditions of measurement ...................................................................................................... 12

6.1 Arrangements for RF connections to the equipment........................................................................................ 12

6.1.1 RF connections to integral antenna equipment........................................................................................... 12

6.1.2 RF connection to equipment with a detachable antenna............................................................................. 12

6.2 Arrangements for test signals applied to the receiver input ............................................................................. 12

6.3 Squelch ............................................................................................................................................................ 12

6.4 Normal test modulation.................................................................................................................................... 12

6.5 Artificial antenna ............................................................................................................................................. 12

6.6 Arrangements for test signals applied to the transmitter input ......................................................................... 12

6.7 Test channels ................................................................................................................................................... 12

6.8 Measurement uncertainty and interpretation of the measured results .............................................................. 13

6.8.1 Measurement uncertainty ........................................................................................................................... 13

6.8.2 Interpretation of the measurement results................................................................................................... 13

6.9 Test conditions, power sources and ambient temperatures .............................................................................. 13

6.9.1 Normal and extreme test conditions ........................................................................................................... 13

6.9.2 Test power source ...................................................................................................................................... 14

6.10 Normal test conditions ..................................................................................................................................... 14

6.10.1 Normal temperature and humidity.............................................................................................................. 14

6.10.2 Normal power sources................................................................................................................................ 14

6.10.2.1 Battery power source............................................................................................................................ 14

6.10.2.2 Other power sources ............................................................................................................................. 14

6.11 Extreme test conditions.................................................................................................................................... 14

6.11.1 Extreme temperatures................................................................................................................................. 14

6.11.2 Extreme values of test power sources......................................................................................................... 15

6.11.2.1 Battery power source............................................................................................................................ 15

6.11.2.2 Other power sources ............................................................................................................................. 15

6.12 Procedure for tests at extreme temperatures .................................................................................................... 15

7 Environmental tests ............................................................................................................................... 15

7.1 Procedure......................................................................................................................................................... 15

7.2 Performance check........................................................................................................................................... 15

7.3 Drop test .......................................................................................................................................................... 15

7.3.1 Definition ................................................................................................................................................... 15

7.3.2 Method of measurement............................................................................................................................. 16

7.3.3 Requirement .............................................................................................................................................. 16

7.4 Temperature tests............................................................................................................................................. 16

7.4.1 Definition ................................................................................................................................................... 16

7.4.2 Dry heat...................................................................................................................................................... 16

7.4.2.1 Definition.............................................................................................................................................. 16

7.4.2.2 Method of measurement ....................................................................................................................... 16

7.4.2.3 Requirement ......................................................................................................................................... 16

7.4.3 Damp heat .................................................................................................................................................. 16

7.4.3.1 Definition.............................................................................................................................................. 16

7.4.3.2 Method of measurement ....................................................................................................................... 17

7.4.3.3 Requirement ......................................................................................................................................... 17

7.4.4 Low temperature cycle ............................................................................................................................... 17

7.4.4.1 Definition.............................................................................................................................................. 17

7.4.4.2 Method of measurement ....................................................................................................................... 17

7.4.4.3 Requirement ......................................................................................................................................... 17

8 Transmitter............................................................................................................................................. 17

8.1 Frequency error................................................................................................................................................ 17

8.1.1 Definition ................................................................................................................................................... 17

8.1.2 Method of measurement............................................................................................................................. 18

8.1.3 Limits ......................................................................................................................................................... 18

8.2 Carrier power................................................................................................................................................... 18

8.2.1 Definitions.................................................................................................................................................. 18

8.2.2 Method of measurement............................................................................................................................. 18

8.2.3 Limits, Normal and extreme test conditions............................................................................................... 18

8.3 Frequency deviation......................................................................................................................................... 18

8.3.1 Definition ................................................................................................................................................... 18

8.3.2 Maximum permissible frequency deviation................................................................................................ 18

8.3.2.1 Method of measurement ....................................................................................................................... 18

8.3.2.2 Limits.................................................................................................................................................... 19

8.3.3 Reduction of frequency deviation at modulation frequencies above 3 kHz ............................................... 19

8.3.3.1 Method of measurement ....................................................................................................................... 19

8.3.3.2 Limits.................................................................................................................................................... 19

8.4 Sensitivity of the modulator, including microphone ........................................................................................ 19

8.4.1 Definition ................................................................................................................................................... 19

8.4.2 Method of measurement............................................................................................................................. 20

8.4.3 Limits ......................................................................................................................................................... 20

8.5 Audio frequency response................................................................................................................................ 20

8.5.1 Definition ................................................................................................................................................... 20

8.5.2 Method of measurement............................................................................................................................. 20

8.5.3 Limit........................................................................................................................................................... 20

8.6 Audio frequency harmonic distortion of the emission ..................................................................................... 21

8.6.1 Definition ................................................................................................................................................... 21

8.6.2 Method of measurement............................................................................................................................. 21

8.6.2.1 Normal test conditions.......................................................................................................................... 21

8.6.2.2 Extreme test conditions......................................................................................................................... 22

8.6.3 Limits ......................................................................................................................................................... 22

8.7 Adjacent channel power................................................................................................................................... 22

8.7.1 Definition ................................................................................................................................................... 22

8.7.2 Method of measurement............................................................................................................................. 22

8.7.3 Limits ......................................................................................................................................................... 22

8.8 Conducted spurious emissions conveyed to the antenna.................................................................................. 23

8.8.1 Definition ................................................................................................................................................... 23

8.8.2 Method of measurement............................................................................................................................. 23

8.8.3 Limit........................................................................................................................................................... 23

8.9 Cabinet radiation and conducted spurious emissions other than those conveyed to the antenna ..................... 23

8.9.1 Definitions.................................................................................................................................................. 23

8.9.2 Method of measurement............................................................................................................................. 23

8.9.3 Limits ......................................................................................................................................................... 24

8.10 Residual modulation of the transmitter ............................................................................................................ 24

8.10.1 Definition ................................................................................................................................................... 24

8.10.2 Method of measurement............................................................................................................................. 25

8.10.3 Limit........................................................................................................................................................... 25

8.11 Transient frequency behaviour of the transmitter ............................................................................................ 25

8.11.1 Definitions.................................................................................................................................................. 25

8.11.2 Method of measurement............................................................................................................................. 26

8.11.3 Limits ......................................................................................................................................................... 27

9 Receiver ................................................................................................................................................. 29

9.1 Harmonic distortion and rated audio frequency output power......................................................................... 29

9.1.1 Definition ................................................................................................................................................... 29

9.1.2 Methods of measurement ........................................................................................................................... 29

9.1.3 Limits ......................................................................................................................................................... 29

9.2 Audio frequency response................................................................................................................................ 29

9.2.1 Definition ................................................................................................................................................... 29

9.2.2 Method of measurement............................................................................................................................. 29

9.2.3 Limits ......................................................................................................................................................... 30

9.3 Maximum usable sensitivity............................................................................................................................. 31

9.3.1 Definition ................................................................................................................................................... 31

9.3.2 Method of measurement............................................................................................................................. 31

9.3.3 Limits ......................................................................................................................................................... 31

9.4 Co-channel rejection........................................................................................................................................ 31

9.4.1 Definition ................................................................................................................................................... 31

9.4.2 Method of measurement............................................................................................................................. 31

9.4.3 Limit........................................................................................................................................................... 32

9.5 Adjacent channel selectivity ............................................................................................................................ 32

9.5.1 Definition ................................................................................................................................................... 32

9.5.2 Method of measurement............................................................................................................................. 32

9.5.3 Limits ......................................................................................................................................................... 32

9.6 Spurious response rejection ............................................................................................................................. 32

9.6.1 Definition ................................................................................................................................................... 32

9.6.2 Method of measurement............................................................................................................................. 32

9.6.3 Limit........................................................................................................................................................... 33

9.7 Intermodulation response................................................................................................................................. 33

9.7.1 Definition ................................................................................................................................................... 33

9.7.2 Method of measurement............................................................................................................................. 33

9.7.3 Limit........................................................................................................................................................... 33

9.8 Blocking or desensitization.............................................................................................................................. 33

9.8.1 Definition ................................................................................................................................................... 33

9.8.2 Method of measurement............................................................................................................................. 34

9.8.3 Limit........................................................................................................................................................... 34

9.9 Conducted spurious emissions ......................................................................................................................... 34

9.9.1 Definition ................................................................................................................................................... 34

9.9.2 Method of measurement............................................................................................................................. 34

9.9.3 Limit........................................................................................................................................................... 34

9.10 Radiated spurious emissions ............................................................................................................................ 34

9.10.1 Definition ................................................................................................................................................... 34

9.10.2 Method of measurements ........................................................................................................................... 35

9.10.3 Limit........................................................................................................................................................... 35

9.11 Receiver noise and hum level .......................................................................................................................... 36

9.11.1 Definition ................................................................................................................................................... 36

9.11.2 Method of measurement............................................................................................................................. 36

9.11.3 Limit........................................................................................................................................................... 36

9.12 Squelch operation ............................................................................................................................................ 36

9.12.1 Definition ................................................................................................................................................... 36

9.12.2 Method of measurement............................................................................................................................. 36

9.12.3 Limits ......................................................................................................................................................... 37

9.13 Squelch hysteresis............................................................................................................................................ 37

9.13.1 Definition ................................................................................................................................................... 37

9.13.2 Method of measurement............................................................................................................................. 37

9.13.3 Limit........................................................................................................................................................... 37