Balancing The Horizontal Ring - Simrad GC80 Instruction Manual

Note!
WARNING
20221537 / D
7. Press the button again to return to main category A1,
SET
and then press the
8. Press the button, and enter values for 2.1.o and 2.3.h as
SET
described above.
9. Press the button again to return to main category A2,
SET
and then press the
displayed.
10. Press the button, and enter the value for 7.3.u as
SET
described above.
11. Exit the sub-category by pressing the
exit the Extension main category by pressing and holding the
and
SET ACK/ENT
seconds.
For more information about the Extension menu, see
ADVANCED SETTINGS, page 67 onwards.

Balancing the Horizontal ring

After the Sensitive element has been replaced, the gyro compass
should be started as described on page 12.
When the compass has been running continuously for at least 2
hours, the horizontal ring should be adjusted.
1. Locate the reference level tool on the horizontal ring, and
check that the level bubble is within +/-10 minutes from the
center. Each division equals 2 minutes.
+/-10 minutes
2. If the level bubble not is within this limit, add or remove
weights from the horizontal ring until it is level.
It is important that the total number of weights on the horizontal
ring are as few as possible.
3. Let the compass run for at least 20 minutes before the level
is rechecked and eventually confirmed.
If the horizontal ring is tilted more than +/-
10', a bearing error may be generated!
button to go to A2 main category.
DISP
button until main category A7 is
DISP
SET
buttons simultaneously for at appr. 3
MAINTENANCE
button, and then
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