CONNECTIONS AND MAINTENANCE
r DC POWER CONNECTOR
Connects to a 13.8 V DC power source.
MAKE SURE the DC power cable polarity is correct.
Red : Positive + terminal
Black : Negative _ terminal
CAUTION: After connecting the DC power cable, NMEA
leads, external speaker leads and PA speaker leads, cover
the connector and leads with an adhesive tape, as shown
below, to prevent water seeping into the connection.
t GROUND TERMINAL
Connects to a vessel ground to prevent electrical shocks
and interference from other equipment occurring. Use a
PH M3 × 6 screw (not supplied).
y COMMAND MICROPHONE JACK
Connects to the HM-195.
When connecting the
HM-195 for the ﬁrst time,
a ﬁrmware update (if
needed) will automatically
start, and the monitor dis-
plays the message shown
to the right. The update
will take a maximum of 2
DO NOT turn OFF the transceiver, or disconnect the microphone
until the update is completed.
Connect the transceiver to the high-density D-Sub 15-pin
connector of the MA-500TR using the OPC-2014* cable. Af-
ter connecting, an Individual DSC call can be made to the
AIS target using the transponder, without entering the target’s
* The OPC-2014 is supplied with the MA-500TR
Connects to lead 3 of the OPC-2014.
Connects to lead 2 of the OPC-2014.
Connects to lead 5 of the OPC-2014.
Connects to lead 4 of the OPC-2014.