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Installing the Hardware
48
Connecting to a charplotter
The UM425 provides a standard NMEA0183 GPS output that you can
connect to a chartplotter. When it receives another boat’s position data in a
DSC call, the radio sends the position data to the chartplotter so you can see
the location:
If Daylight Savings Time is currently in effect, select6. On. If Daylight
Savings Time is not currently in effect, select Off.
Press the 7.
SELECT button. The radio activates the new time setting and
returns to the GPS Setup menu.
Disconnect the 1. accessory cable from the accessory connection on the
radio.
Connect the ORANGE wire of the 2. accessory cable to the NEGATIVE
(-) wire of your chartplotter’s NMEA data INPUT.
Connect the YELLOW wire of the 3. accessory cable to the POSITIVE
(+) wire of your chartplotter’s NMEA data INPUT
Be certain all wire connections are secure and that all open wires are 4.
adequately covered.
If you are nished connecting all external accessories, line up the 5.
arrows on the side of the accessory cable and connector and connect
the accessory cable to the accessory connector on the back of the
UM425.
NOTE: To extend the life of the radio, use waterproof tape to seal
electrical connections.
Connecting to an external speaker
You can use an external speaker to monitor the radio from a different part of
your boat or in a noisy environment. If you adjust the VOLUME-PWR knob on
the radio, it will also adjust the external speaker volume.
The UM425 supports an external speaker with the following specications:
• Minimum impedance of 4 Ohms
• Minimum power handling of 10 Watts
UM425 VHF OM.indd 48 28/9/11 11:55:22 AM