10
Northstar NS3100 DEPTH
5 NS3100 DEPTH hardware
The NS3100 DEPTH is usually used with a through
hull depth transducer. However, the unit can take
readings from another instrument, in which case it
may not need a transducer (see section 4).
A through hull transducer generally gives the best
performance and is the best choice for displacement
hulls. It is mounted in a hole drilled through the
bottom of the boat.
A plastic through hull transducer is suitable
for GRP or metal hulls. Plastic through hull
transducers are not suitable for solid wooden
hulls (use Northstar’s bronze transducers).
A bronze transducer is suitable for
wood or fibreglass hulls. Never install
a bronze transducer in a metal hull,
because it will cause electrolytic
corrosion.
A range of Northstar through hull
transducers are available, plus in hull
and transom mount transducers. For
more information, refer to the Transducer
Installation manual or consult your
Northstar dealer.
4 m (13 ft) depth transducer
extension cable
NavBus junction box
(See section 4)
5-1 What comes with your NS3100 DEPTH
The NS3100 DEPTH comes in several configurations.
Standalone configuration
NS3100 DEPTH unit with protective cover.
Warranty card.
Mounting template.
This Installation and Operation manual.
In addition, the standalone configuration usually
requires a depth transducer (see section 5-3).
Kit configuration
The NS3100 DEPTH is available in several kit
configurations with different grades of through hull
transducer, with:
The parts for the standalone configuration, listed
above.
Through hull depth transducer.
Transducer Installation manual.
5-2 Other parts required
One or more NS3100 series instruments will be
connected to the boat 12 V power supply via:
An accessory switch to turn the instruments on
and off.
A fuse. Use a 1 A fuse for between one and five
instruments.
Optional external beepers or lights can be fitted. The
NS3100 DEPTH output is switched to ground, 30 V
DC and 250 mA maximum. If the beepers and lights
require more than 250 mA, fit a relay.
For systems of several instruments, wiring and
connectors are required (see section 4 or the NavBus
Installation and Operation manual).
5-3 Transducer
5-4 Accessories
These accessories are available from your Northstar dealer.
