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INTRODUCTION
This manual covers the full-featured test box model GMDSS-AIS-SART equipped for
GMDSS tests, AIS tests and Radar SART tests. If your test box does not include all these
features, you are kindly requested to disregard the related sections in this manual.
GMDSS TESTS
For the testing of VHF and MF/HF radios, the test box can check DSC signals transmitted on
any of the six distress frequencies on MF/HF and on VHF CH 70.
The test box can send either a GMDSS distress signal (all ships call) or a selective test call
addressed to a particular MMSI number. The calls can be sent on any of the 6 distress
frequencies on MF/HF as well as on VHF CH 70. Furthermore, the test box can send and
receive DSC signals on the international calling frequencies 2177.0 and 2189.5 kHz.
The test box measures and displays the mark/space frequencies of the received DSC-signals.
On VHF CH 6 the test box can measure the deviation on a received signal.
The test box is able to measure the transmitted and reflected power on any VHF channel,
including CH 70, and also to test the sensitivity of the receiver part.
For the testing of NAVTEX Receivers, the test box can send NAVTEX signals on 490 kHz,
518 kHz or 4209.5 kHz.
The test box can also be used to check 406 MHz EPIRBs and Personal Locator Beacons, as
it can receive and decode test calls on 406.025 / .028 / .037 /.040 MHz as well as receive the
121.5 MHz homing signal.
AIS TESTS
The test box is capable of testing AIS Class A and Class B Transponders by checking their
ability of sending and receiving AIS data and by making frequency measurements and power
measurements on CH 70, AIS channel 1 and AIS channel 2.
Furthermore, it is possible to check the GMDSS communication on CH 70 by requesting reports
of Position, Length, Course, Name/Identity, Speed, Power or Ship's beam.
The test box is able to simulate a ship appearing at four different positions, relative to the AIS
transponder's position.
The AIS test facility can also be used for the testing of AIS-SARTs, AtoN devices and
Man Over Board devices, as it can receive and decode test calls from these.
RADAR SART TESTS
For the testing of 9 GHz Radar SARTs, the test box measures the frequency of the response
signals transmitted from the SART and will display the average frequency.
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