Dsc Communication Test - Furuno FM-8800D Service Manual

8.2 DSC Communication Test

This is a communication test between FM-8800S/Ds. Conditions under which this can
be done with the same MMSI are below only:
- CALL TYPE: Individual (SHIP CALL)
- CATEGORY: Routine
In this case, TX output of CH70 will automatically be reduced to Low Power.
NOTE:
FM-8500, etc can receive signals with the same MMSI. For example, No.2 VHF DSC
can receive a DISTRESS CALL or ALL SHIP CALL from No.1 VHF. This tends to
confuse a user. Therefore, when receiving the same registered MMSI, it will not carry
out RX processing of messages other than messages set up by above-mentioned
setup.
1. ACK RQ
Ship Call
ROUTINE
COM. CH6
Handset
ON HOOK
Procedure
1. Carry out a DSC test from No.1 VHF to No2. VHF.
Press CALL key on No.1 VHF to create DSC message.
- CALL TYPE:
- SHIP ID:
- CATEGORY:
- TCmd 1:
- TCmd 2:
- CH:
2. As for a setup procedure for No.2 VHF, Select [MENU] -> AUTO ACK -> and set
COMPLY STATUS setup to "ABLE". In addition, set Handset/Remote Handsets to
"ON HOOK", and to any channel.
3. Press CALL key on No.1 VHF for longer than three seconds. Then, "CALL IN
PROGRESS ON CH70" will appear and after transmitting from CH70 "WAITING
FOR ACKNOWLEDGEMENT" will appear. Then, wait for the ACK BQ from No.2
VHF.
CH70 1W
2. ACK BQ
( ABLE)
TR ANT CH70 ANT
3. Voice Comunication
No.1 VHF
(CH6)
Fig. 8.2.1 DSC Communication Test
SHIP CALL
No.2 VHF MMSI (Input Own ship)
ROUTINE
SIMPLEX TP
NO INFO
CH6
CH70 1W
TR ANT CH70 ANT
No.2 VHF
AUTO ACK: ON, Able
8-6
8.2 DSC Communication Test
Handset
ON HOOK