Simrad GC80/GC85 Dual Gyro Compass
68 20221537 / D
6.1 General
The Extension menu holds internal parameters and
communication parameters required to achieve the best possible
heading accuracy on the GC80/GC85 Gyro compass.
The Extension menu is grouped in 8 main categories, named A-
1 through A-8. Each of these main categories has again several
sub-categories where parameter values may be set.
All values in the Extension menu are stored in the nonvolatile
memory of the compass.
6.2 Using the Extension menu
Caution! The Extension menu should not be entered by unauthorized
personnel. Incorrect parameters may result in irregular
operation of the GC80/GC85 gyro compass!
The extension menu can be entered when any display is shown
in the LCD.
1 Activate the menu by pressing and holding the SET button
and the ACK/ENT buttons simultaneously for at least 3
seconds.
- Main category A-1 will be displayed.
2 Page through the main categories to the selected category
by pressing the DISP button. Pressing the DISP and
ACK/ENT buttons simultaneously will display the main
category loop in reversed order.
3 Press the SET button to enter the sub-category loop, and
use the
DISP button to select sub-category that holds the
parameter to be changed.
4 Use the arrow buttons to increase or decrease the
parameter value.
5 Confirm the new value by pressing the
ACK/ENT button,
or reject the changes by pressing the SET button. The
display will return to selected sub-category.
6 Exit the Extension menu by pressing and holding the SET
and ACK/ENT buttons simultaneously for at least 3
seconds.
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