Specifications

Fault Finding
20220760L 113
Condition Probable Cause Action
Some or all
Headings are
incorrect, by
different amounts.
Note :
When checking a
Compass ensure that
the check is against a
deviated magnetic
card compass, or
against magnetic
bearings, or against a
good hand held
compass held well
away from any
magnetic or ferrous
objects.
The compass hasn’t
been calibrated.
Magnetic or ferrous
objects have been
moved into or away
from the vicinity of
the compass.
The location of the
compass is unsuitable.
Recalibrate the compass.
Check for possible objects that may affect
the compass, e.g., a portable radio. If the
change is permanent then recalibrate the
Sensor.
Check that the location of the compass is
suitable, if not then resite it.
Contact your dealer.
Navigation Display Faults
Condition Probable Cause Action
There are no
Navigation displays,
even though the
GPS/Plotter is
working.
The required data is
not being received
from the GPS/Plotter.
Check that the GPS/Plotter has a position
fix.
Check that the GPS/Plotter’s NMEA
output is set-up correctly.
Check the GPS/Plotter’s NMEA output
specification against the instrument’s input
specification.
Check the signal wiring from the
Navigation Receiver to the IS15
Instrument head.
Check that the Navigation Receiver is
driving other remote displays correctly.
Contact your dealer.