21
NOTE:
Gyro NULL is best set with a stationary object when the
system has been running for 15 minutes.
NULL (shifted function) – The system must be in Rate Mode for this
action to be initiated. Gyro Null will replace Rate Mode on the display.
In Gyro Null the Strain Gauge is used to manually remove drift from the
Gimbal. Once drift is corrected and ball is motionless, press the SHIFT
Switch and then the NULL Switch to simultaneously lock the null settings
and return to Rate Mode.
3.1.8 Az Position Control
Adjust control to set Azimuth home position.
Position Mode Az position controls active; Strain Gauge inactive.
Rate Mode Strain Gauge active; Az position control inactive.
Heading Hold Strain Gauge active; Az position control inactive.
3.1.9 El Position Control
Adjust control to set Elevation home position.
Position Mode El position control active; Strain Gauge inactive.
Rate Mode Strain Gauge active; El position control inactive.
Heading Hold Strain Gauge active; El position control inactive.
3.1.10 Backlight Control
This control is used to adjust the level of backlighting on the HCU.
3.1.11 Power Switch
The system’s electrical power switch has four positions.
NOTE:
The System Power switch activates a power relay’s control
circuit, which draws a minimum amount of electrical power.
The power relay removes all electrical power from the
system computer and other functional control and drive
circuits.
Commercial in Confidence
Export Level 2
Issued to: AgustaWestland
CM Ref:4049
Valid on Day of Issue only.
Document will not be updated
Uncontrolled : 4256
Retrieval Date:07-Dec-10
Requested by Bower, Richard
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