Checking Antenna Coupler; Self-Test - Furuno FS-1575 Service Manual

6.9 Checking Antenna Coupler

6.9.1 Self-test

When the [CHECK] is pressed, The AT-1575/AT-5075 Antenna coupler initiates self-tests
following the procedure shown below:
1. Turn OFF all relays.
2. Turn ON and OFF capacitor control relays and coil control relays on the input side as
well as capacitor control relays on the output side, one after another.
3. Check ROM, RAM, and ADC that are built in the CPU.
4. Upon completion of checking, return the antenna coupler to its original state.
[TUNE], [CHECK]
CR10 (RUN)
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
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AT-5075
CR10( RUN)
[TUNE], [CHECK]
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6.9 Checking Antenna Coupler
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AT-1575