Uniden UM425 VHF DSC 사용자 설명서

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, select

6. 

 On. If Daylight 

Savings Time is not currently in effect, select Off.
Press the 

7. 

 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 finished 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.

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 

 knob on 

the radio, it will also adjust the external speaker volume.
The UM425 supports an external speaker with the following specifications:

• 

Minimum impedance of 4 Ohms

• 

Minimum power handling of 10 Watts 

UM425 VHF OM.indd   48

28/9/11   11:55:22 AM