Auto Compass Calibration; Spares & Accessories - Simrad TP20 Manual

6.3 Auto Compass Calibration

Although the Tillerpilot internal compass is extremely
accurate, for long distance sailing it may be necessary to
calibrate the compass, to compensate for any deviations
caused by objects surrounding it on board the vessel.
With the vessel motoring along slowly (2-3 knots) in
calm conditions and the Tillerpilot in Standby Mode,
press the Starboard key a number of times to induce a
slow clockwise rotation of the vessel. Press and hold the
TACK key, followed by the Port and Starboard keys
simultaneously to enter Auto Compass Calibration
Mode (Fig 6.1). The Port and Starboard LEDs will both
light. Allow the vessel to turn through a minimum of
1
1 ⁄ 4 turns (450º) in approximately two minutes, during
which time the fluxgate compass will automatically cali-
brate itself.
If the rate of turn or the boat speed is too high, the Port
LED will flash (FIg 6.2) indicating that it is necessary to
either slow the boat or decrease the angle of turn. If the
rate or turn or boat speed is too slow the Starboard LED
will flash, indicating that it is necessary to either increase the boat speed or increase the angle of
turn. A short beep will indicate that the calibration has been successful, and the Tillerpilot will
return to Standby Mode. If the calibration has been unsuccessful after a period of four minutes, a
long beep will sound. Try again carefully following the above directions.
Note that this function is only available for auto calibrating the internal fluxgate compass.
6.4 Spares and Accessories
The following spare parts can be ordered from your local authorised Simrad Technical Dealer.
Please quote the relevant part number when ordering.
E02648
Tiller Pin
E00099
Mounting Cup
E00111
Push Rod End
170153
Bulkhead Socket
TACK
TACK
TACK
TACK
Fig 6.1 - Auto Compass Calibration
TACK
Fig 6.2 - Rate of turn too fast
170090
Protective Cover
for Bulkhead
Socket
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