iOptron CEM120 User manual
iPolarInstallation–CEM120Internal(#3339A‐120)
1. Remove two screws that hold the Cable
Management System (CMS) panel using a
2.5mm hex wrench.
2. Pull the panel open. The CMS_D board
should look like the following.
If your CMS_D has an USB plug for the
iPolar, please contact iOptron for a modified
one.
3. Unthread CEM120 polar scope front cover.
4. Remove counterweight shaft house by
unscrewing three screws (one socket screw
on top and two set screws on the side).
5. Plug the 4 wire cable to the iPolar. Insert it
into the CEM120 RA axle. You may use a
wire to pull the cable to the rear of the RA
axle.
6. Back out two set screw to make sure they
do not stick out of the outside ring. Psuh the
iPolar into the RA axle. Tighten two set
screws on iPolar CEM120 adapter to
secure the iPolar inside the RA axle. Do not
over tighten the screws.
7. Plug the 4-wire cable into iPolar socket on
the CMS_D board.
8. Replace the panel and counterweigh shaft
house.
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