2. Fit the lens (not supplied) to the camera and rotate it to get it
tightened.
Install the adapter ring to the lens interface if a C-mount lens is
used.
A manual-iris lens can be directly installed to the camera without
plugging the power cable of the auto-iris to the auto-iris interface.
3. Plug the auto-iris cable to the auto-iris interface.
Install the Lens Figure 2-2
4. Align the screw hole on the camera with the ceiling mount and
rotate the camera to get it fixed.