User manual

Page 16 of 54 Universal Motor Controller UMC-4 – User Manual – V 02/2015
Note: After connecting a lens motor to the UMC-4 and the lens, it must be
calibrated. The lens motor must be recalibrated under the following
conditions:
• When the lens motor is detached from the lens
• After changing lenses
• After a change in motor position while powered down
Omitting motor calibration might lead to damage of the lens due
to the high level of motor torque!
Note: You can program a custom lens file through the ALEXA web
interface or with the Wireless Compact Unit WCU-4 (SUP 2.0 onwards)