Simrad GC80/GC85 Expanded Gyro Compass
10 20221529 / C
3.1 System Start-up and Shut-down
A GC80/GC85 Expanded gyro system is usually left with power
on. If the system has to be shut down and restarted, the
procedures in the following sections should be followed.
Start-Up
Caution Before the gyrocompass is turned into normal operation, it has
to be configured according to the description in System start-
up and software configuration, page 48 onwards.
mltbo
1 Turn ON the gyro system by pressing the POWER button
on the Control panel. The following start-up sequence will
be run:
Control unit type (GC80 Std, or GC85 HSc), SW version for
Control unit and for Master compass is displayed in rapid
succession. Examples of display text are shown below:
OR
GC80 CONTROL
UNIT
STD VERSION
GC80 CONTROL
UNIT
HIGH SPEED
VERSION
SW VERSION
CONTROL UNIT
SW. VERSION
MASTER COMPASS
dvol
2 If the rotor not was completely stopped when the POWER
button was pressed, a rotor break function will be activated
to stop the rotor.
Active rotor break is indicated with flashing display.
3 The sensitive element starts rising horizontally, and the
compass rotates 360° clockwise. The display shows
decreasing bearing as the compass is rotating.
dvol
4 When the rotation is stopped, start bearing is indicated
with flashing text in the display. The start bearing will be
the same as active bearing when the compass was turned
OFF.
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