Raymarine P70, Installation & Operation Instructions

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Compass deviation
If the reported deviation is 45° or higher, it is
highly recommended that the EV unit is moved
and re-installed in a location which is subject to
less magnetic interference. After the linearization
process has successfully completed you can check
the current deviation value at anytime from the
diagnostics pages.
Note: If “- -” is displayed as the Deviation value, it
means that linearization has not been successfully
completed yet.
Check the compass heading data
As part of the autopilot system commissioning
process, it is recommended that you check the
compass heading value displayed, against a good
known heading source on various headings.
Note: Once the linearization process has
completed, it is possible that the heading value
may have a slight offset of 2 to 3 degrees. This
is common where installation space is limited,
and the EV unit cannot be properly aligned to the
vessel's longitudinal axis. In this case, it is possible
to manually adjust the Compass Offset value.
Note: Do NOT rely on the reported heading until
compass linearization and alignment is complete.
System monitoring and adaptation
To ensure optimum performance, after the initial
linearization process is complete the EV continues to
monitor and adapt the compass linearization to suit
current conditions.
If the conditions for linearization are less than ideal,
the automatic linearization process temporarily
pauses until conditions improve again. The following
conditions can cause the linearization process to
temporarily pause:
• Boat speed < 3 knots.
• Boat speed > 15 knots.
• Rate-of-turn is too slow.
• Significant magnetic interference is present
Accessing the compass deviation indicator
1. Select MENU .
2. Select Set-up .
3. Select Diagnostics .
4. Select About Pilot .
The details related to the pilot diagnostics are
displayed.
5. Scroll down to the bottom of the list to view the
entry for Deviation .
Note: If “- -” is displayed as the Deviation value, it
means that linearization has not been successfully
completed yet.
Adjusting the Compass Offset
With the pilot in Standby:
1. From the
Vessel Settings menu: ( Menu >
Set-up > Autopilot Calibration > Vessel
Settings ).
2. Select Compass Offset .
3. Use the +/- 10 button (p70/p70s) or ROTARY
control (p70R/p70Rs) to adjust the compass
offset as appropriate.
The Compass Offset can be adjusted between
–10° and +10°.
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p70 / p70R