Specifications

Setting-Up
20220760L 99
Screen 1
COMPASS CAL.
This function will activate the automatic compass calibration
procedure.
Note ! Do not use the calibration procedure when the IS15 is connected
to a Simrad autopilot.
Before you begin the compass calibration procedure, make sure
you have enough open water around you to make a full
clockwise turn. Let the boat turn at idle.
1. Begin turning the boat to starboard.
2. Press the button and hold for 2 seconds. The LCD flashes
‘CAL’.
3. When the calibration is completed, (after having made
approximately 1 ¼ turns), it will be confirmed by the display
reading ‘Done’.
Screen 2
HDG OFFSET
Note ! Do not use the Heading Offset procedure when the system is
connected to a Simrad autopilot.
The Heading Offset feature allows you to correct for a
permanent heading offset that may be present as a result of the
compass being installed with a lubber line offset, or a fixed
offset remains after the calibration procedure has been
completed.
• Increase the offset reading using the
button (positive
offset).
• Decrease the offset reading using the button (negative
offset).
Screen 3
HEADING / BEARING UNIT
The display heading and bearing may be set to reference either
Magnetic (M) or True (T) North. If True North is selected,
magnetic variation must be available from a GPS or entered
manually. See note on page 20.