Systems Of Several Instruments - NorthStar EXPLORER 443D Installation And Operation Manual

Flush Mounting
1. Cut a hole in the bulkhead for the display unit
using the flush mount template.
2. Drill four holes for the mounting studs using
the flush mount template.
3. Screw the four studs into the brass inserts in
the back of the display unit.
4. Sit the display unit in place and fit the
washers and nuts to the studs.
Bracket Mounting
1. Fix the mounting bracket onto the boat
using the three stainless steel screws. Do not
overtighten the screws, as the bracket may not
rotate.
2. Push the display unit onto the mounting
bracket and tighten it firmly using the knob
on the mounting bracket.
3. Attach the cables.
6-4 Systems of several instruments (Explorer 443df only)
Several Northstar instruments can be connected
together to share data.
The Explorer 443d/443df is particularly suited
to work with the Explorer 538 (3.8" color)
- Northstar's GPS chartplotters with worldwide
coverage.
There are two ways of connecting instruments
together; NavBus or NMEA.
NavBus
NavBus is a Northstar proprietary system that
allows systems of multiple instruments to be
built using a single set of transducers. When
instruments are connected by NavBus:
If the units, alarms or calibration are changed
•
in one instrument, then the values will
automatically change in all instruments of the
same type.
Each instrument can be assigned to a group
•
of instruments. Then, if the backlight setting
is changed in one group, it will automatically
32 Northstar Explorer 443d/443df Installation and Operation Manual
Removing the display unit
The display unit can be removed after each
use for protection against the environment or
security reasons.
When removing the display unit, ensure that
the plugs left in the boat are not exposed to the
elements. Push the attached dust cover over the
exposed ends of the plugs. Keep the display unit
in a dry clean place such as an optional Northstar
carry bag.
change for the other instruments in that
group. However, the backlight setting will not
change for instruments in different groups.
If an alarm sounds, mute it by clearing the
•
alarm on any instrument which can display
that alarm.
NMEA
NMEA is an industry standard for marine
instrument connections. Data sent by one
instrument over an NMEA line can be read and
displayed by another instrument that accepts
NMEA 0183 Version 2. It is not as flexible as
NavBus as it requires dedicated connections
between instruments.
Please contact your Northstar dealer for
information on Northstar's full range of NMEA
enabled instruments and connection options.