 after a camera reboot
 after changing lenses
 after a change in motor position while powered down
Note: Omitting motor calibration might lead to damage of the lens due to the
high level of motor torque.
To calibrate a motor:
1. Press the WRS button.
2. Select a motor by pressing the IRIS CLM, ZOOM CLM or FOCUS
CLM button.
3. Press CALIBRATE to start calibration of this motor only, or CAL.
ALL to start calibration of all motors.
Motor direction
The direction of the motors can be set in the ALEXA's menus.
To set the direction of a motor:
1. Press the WRS button.
2. Select the motor by pressing the IRIS CLM, ZOOM CLM or FOCUS
CLM button.
3. Press the LEFT or RIGHT button to set the direction of the lens
motor.
Motor torque
For CLM-3 and CLM-4 motors, the motor torque can be set in the
ALEXA's menus.
To set the torque on a CLM-3 or CLM-4 lens motor:
1. Press the WRS button.
2. Select the lens by pressing the IRIS CLM, ZOOM CLM or FOCUS
CLM button.
3. Press the +1 or -1 buttons to increase or decrease the motor's
torque. Available torque settings are 1 to 4, with 1 being the lowest
torque level.
Note: Ensure that the motor torque level matches the lens to avoid lens
damage.
3D lens sync
When two ALEXA Plus cameras are set to Sensor sync EXT master and
EXT slave, the slave camera will switch off its radio module and receive
motor control commands from the master camera over the EXT
connection.
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