Furuno FS-1562-15 - Manual (Page 31)

-4.1-
Chapter 4 MAINTENANCE
4.1 Weekly Checks
Check the radiotelephone at appropriate intervals as required by Administration. For instance,
Japanese Administration requires check of DSC every day. US 47 CFR 47, PART 80.869-Test of
radiotelephone station calls for: Unless the normal use of the required radiotelephone station
demonstrates that the equipment is operating, a test communication on a required or working
frequency must be made each day the ship is navigated.
Testing the transmitter with a dummy antenna
1. While pressing and holding down the [ALARM] key, press the [0] key. The dummy antenna
in the antenna coupler is connected to the FS-1562 instead of the antenna. “DUMMY” appears
and the test signal at 2191 kHz, modulated by two tones (1300 Hz and 2200 Hz), is generated
across the dummy load for 45 seconds.
2. To stop the emission, press the [ALARM] key. The dummy load is disconnected and the
transceiver restores the previous frequency setting.
4.2 Diagnostic Test
This test checks the transceiver for proper operation. It should be conducted regularly to ensure
proper operation. If a DSC or NBDP terminal is connected, the test should be conducted together
with them. Before starting the test, set the RF GAIN control to maximum (fully clockwise).
1. While pressing and holding down the [TX] key, turn on the power. All LCD segments appear.
2. Release the [TX] key. The FS-1562 starts diagnostics and the following indications appear.