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DEPTH 3100 Installation and Operation ManualNAVMAN
10
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:
With several instruments, use the optional
junction boxes to simplify wiring, as shown
below:
For information on how to connect NavBus and
to use junction boxes, refer to the NavBus
Installation and Operation manual.
2 Tape or cover any unused wires or connectors
to protect them from water and keep them from
shorting together.
12 V DC
power
NMEA out (optional)
NavBus (optional)
External beepers or
lights (optional)
Red
White
Green
Black
Yellow
Switch Fuse
Orange
Blue
Depth transducer
6-2 Set up
1 Take the boat for a trial run to check that all the
instruments work correctly.
2 If the unit is part of a system of 3100 series
instruments connected by NavBus, set the
backlight group number (see section 4-1):
i Press + several times until the
Backlight Group screen is displayed:
ii Press or to set the backlight group
number.
iii Press .
3 Set:
The depth units (see section 3-1).
The keel offset (see section 3-5).
6-3 Resetting to factory defaults
All settings may be reset to the manufacturer’s default
settings (see below).
To reset to factory defaults:
1 Turn the power off.
2 Hold down + while you turn the power on
and continue to hold the keys down for at least
five seconds.
Backlight
group 3
Depth units ................................................ m
Keel offset ................................................... 0
Depth alarms ............................................ Off
SIMULATE mode ...................................... Off
Backlight level ............................................ 0
Backlight group .......................................... 1
Power/data cables Junction box
Junction box
Power & data
connections
Power/data cable
NavBus cable
Group 1
Group 2
Power & data
connections
No connection
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