5
Instruction for CEM120 Gear Switch and Axle Locking Knob
Both RA and DEC have the same Gear Switch and Axle Locking Knob, the operations are the same.
Gear Switch Axle Locking Knob
As an example, here are the positions for the Gear Switch and Axle Locking Knob for RA axis:
A: When transferring or installing the mount, lock the Axle Locking Knob and disengage the Gear
Switch . So the RA won’t swing and there is no force applied onto the worm/ring gear.
B: During mount balancing process, pull and turn the Axle Locking Knob to release it and leave the
Gear Switch at disengaged position . Now the mount will swing freely in RA direction.
C: During normal operation of the mount, i.e., GOTO and tracking, turn the Gear Switch to locking
position to engage the worm/ring gear while leave the Axle Locking Knob released 。
A. During transferring and
installing…
B. During balancing…
C. During operating…
ONLY set the Gear Switch at locking position to engage the worm/ring gear during goto, slew or
tracking.
ALWAYS lock the Axle Locking Knob during transferring and installing.
DO NOT lock both Gear Switch and Axle Locking Knob at the same time.