Furuno GP-1650W - Manual (Page 30)

4. INCORPORATION OF DGPS BEACON RECEIVER KIT (for GP-1650W)
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Checking the beacon receiver
1. Press the [MENU] key.
2. Press the CONFIGURATION soft key.
3. Press the SYSTEM MENU soft key.
4. Press the SELF TEST soft key.
5. Press the MEMORY•I/O TEST soft key to display the following message.
PRPGRAM:OK
NO.14518010XX
RETURN
TEST
SRAM:OK
DRAM:OK
PORT1:OK*
PORT2:OK*
INTERNAL
BATTERY: OK
GPS
RECEIVER:OK
NO.48502060XX
BEACON
RECEIVER:OK
NO.08501781XX
NO.08501791XX
*Special connections are required to check these ports.
Otherwise, NG appears.
Memory, I/O Test Display
6. Confirm that BEACON RECEIVER: OK is displayed.
7. Press the RETURN soft key.
8. Press the [PLOT] key to return the plotter display.