Simrad GC80 Instruction Manual download pdf (Page 19)

OPERATION

20221511 / C 11

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5 The indicated start bearing is accepted by pressing the

ACK/ENT button, or increased/decreased by using the

arrow buttons and then pressing the ACK/ENT button. If

no action is taken within 3 minutes, the start-up process

will continue with the indicated start bearing.

The bearing indication stops flashing when the start

bearing is accepted, while the lamp remains flashing.

6 The rotor will now start rotating, and reaches pre-described

number of revolutions after maximum 30 minutes.

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7 When the rotor has reached full speed, the compass starts

the north seeking rotation. The display will now change to

show the compass’ actual heading, and from now on

bearing output will be available.

The lamp beside the GYRO button change from flashing to

steady light.

The GC80/GC85 will be settled within 3 hours when started

with a deviation angle less than 5°. With a larger deviation

angle, the compass will be settled within 4 hours.

Turning the Gyro compass OFF

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1 Press the POWER button on the Control panel. The light in

the POWER button will be switched off.

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2 Repress the POWER button to activate the rotor break

function. The light in the POWER button will be lit again.

Active rotor break is indicated by:

- flashing display as shown on the figure

- a soft clicking sound heard from the gyrocompass

The rotor break function will be active for maximum 4

minutes.

Caution It is very important that the rotor break is activated to stop the

rotor rotation. If not, the sensitive element may be damaged!

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3 Press the POWER button again to shut down the

gyrocompass when both the data and the dot in the display

change from flashing to steady light.

The light in the POWER button will now be turned OFF.

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Simrad GC80 Instruction Manual Page 19