jotron Tron 40GPS MkII, User Manual

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82819_UM_40SMkII_H
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4. Release the switch and put the EPIRB back into the bracket. What the self-
test actually does is first to wait some seconds to allow the reference oscillator
inside the EPIRB to start up. Then a short burst is transmitted by the 121,5 MHz
transmitter, while the output level of the transmitter is checked. Finally, a test
signal is transmitted by the 406 transmitter. During this test signal the battery
voltage, output power and frequency is checked.
While testing the 406 MHz transmitter a test message is transmitted, this test
message is coded with a special synchronisation code and will not be detected
by the COSPAS/SARSAT satellites. The purpose of this test message is to con-
trol the actual coding of the EPIRB. This can be done with the Jotron AS test unit
Tron UniDEC or another EPIRB tester.
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