Power/data wiring
1 Wire the display unit power/data cable:
The unit requires 12 V DC power. Fit a power switch and fuse to the power supply or power the unit from a fused auxiliary switch. The fuse should be 1 A for up to five instruments.
If the external beepers and lights require more than 250 mA DC total, fit a relay.
A single unit can be wired as shown below:
Black | Switch Fuse | 12 V DC | |
Red | |||
|
6-2 Set up
1Take the boat for a trial run to check that all the instruments work correctly.
2If the unit is part of a system of 310 series instruments connected by NavBus, set the backlight group number (see section
iPress 
+ 
several times until the Backlight Group screen is displayed:
Backlight group 3
Green
Yellow
White
Orange
Blue
Depth
External beepers or
No connection
NMEA out
}NavBus (optional)
iiPress 
or 
to set the backlight group number.
iiiPress 
.
3 Set:
The depth units (see section
With several instruments, use the optional junction boxes to simplify wiring, as shown below:
Group 1
| Junction |
|
Power/data cables | Power & data | |
connections | ||
Group 2 | NavBus cable | Junction box |
| ||
Power/data cable | Power & data | |
connections | ||
|
For information on how to connect NavBus and to use junction boxes, refer to the NavBus Installation and Operation manual.
2Tape or cover any unused wires or connectors to protect them from water and keep them from shorting together.
The keel offset (see section
6-3 Resetting to factory defaults
All settings may be reset to the manufacturer’s default settings (see below).
To reset to factory defaults:
1Turn the power off.
2Hold down 
+ 
while you turn the power on and continue to hold the keys down for at least five seconds.
Depth units | m |
Keel offset | 0 |
Depth alarms | Off |
SIMULATE mode | Off |
Backlight level | 0 |
Backlight group | 1 |
|
|
10 | Northstar Explorer D310 Installation and Operation Manual |