catalogue mrts-7m - gmdss test equipment · mrts-7m test scope. title: catalogue mrts-7m.cdr...

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  • — VHF equipment of duplex

    radiotelephony with airplanes including

    operating on 121.5MHz and 123,1MHz:· operation tests by transmission/reception

    of modulated signal;

    · measurements of frequency, output power

    level and frequency modulation depth;

    — VHF radiotelephone stations

    operating in range (300 - 337) MHz

    (intended for river-sea vessels):· measurement of output power,

    carrier frequency and frequency deviation;

    406MHz signal through broadcast.

    · frequency measurement of 406MHz, 121.5MHz

    · measurement of output power,

    of 406MHz signal;

    — AIS mobile stations Class A and Class

    B and AIS-SARTs working in the Marine-

    VHF band:

    406MHz;

    243MHz signals presence;

    · receiving and decoding of the AIS

    · passing the DSC polling information

    carrier frequency and antenna VSWR;

    406MHz signal;

    messages;

    · power level measurement on 406MHz,

    · measurement of unmodulated carrier duration

    · measurement of total transmission time of

    emergency information transmitted on channel

    · sending data/messages to AIS stations;

    · audio-control of the sweep 121.5MHz and

    vessel”.

    — COSPAS-SARSAT radio beacons

    operating on 406MHz 121.5MHz and

    243MHz frequencies:

    · estimation of the equivalent radiated power of

    and 243MHz signals;

    (channel 70);

    · checking AIS respond to so called “virtual

    · reception, demodulation and decoding of the

    121.5MHz and 243MHz channels;

    — MF/HF radiotelephone equipment

    · test of correct transmission/reception of DSC

    · measurement of frequency in range

    · measurement of carrier frequency and frequency

    — MF/HF radiotelephone equipment:

    · operation tests on any simplex channel including 6,

    reflected power;

    deviation;

    9, 13 and 16 channels;

    · test of correct transmission/reception of DSC

    (1600 – 30000) kHz;

    · verify signal in frequency range of 9140...9560 Mhz;

    · measurement of output power;

    · measurement of carrier frequency and frequency

    (1600 – 30000)kHz;

    messages by means of transmission/reception,

    · measurement of forward and reflected power, VSWR;

    — VHF transceivers:

    Distress (to all ships) messages;

    routine or test calls to particular MMSI number and

    deviation;

    · measurement of antenna VSWR, forward and

    — VHF transceivers with DSC:

    · check the MMSI code programmed in equipment

    without any broadcast emission;

    · operation tests in frequency range

    with DSC:

    messages by means of transmission/reception of

    · operation tests by means of sending test messages;

    — VHF equipment of duplex radiotelephony

    (portable):· operation tests on channels 6, 9, 13, 16 (at least);

    · measurement of output power, carrier frequency

    — NAVTEX equipment:

    — SART:

    Distress (to all ships) messages on any of 6 distress

    channels;

    and frequency deviation;

    · signal level measurement;

    · counting the number of sweeps;

    Selective Test call to particular MMSI number and

  • MRTS-7M TEST SCOPE