Removing the display unit
The display unit can be removed after each
use for protection against the environment or
When removing the display unit, ensure that
the plugs left in the boat are not exposed to
the elements. Push the attached dust covers
over the exposed ends of the plugs. Keep the
display unit in a dry clean place such as an
optional Navman carry bag.
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.
1. Fix the mounting bracket onto the boat
using the three stainless steel screws. Do not
overtighten the screws, as the bracket may
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 (4433 0nly)
Several Navman instruments can be connected
together to share data.
The FISH 4432/4433 is particularly suited
to work with the TRACKER 5430 (4.3”
greyscale)/5380 (3.8” color) - Navman’s GPS
chartplotters with worldwide coverage.
There are two ways of connecting instruments
together; NavBus or NMEA.
NavBus is a Navman 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 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
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
Please contact your Navman dealer for
information on Navman’s full range of NMEA
enabled instruments and connection options.
FISH 4432/4433 Installation and Operation Manual 32