D-Link DCS-4633EV User Manual page 11

Section 2: Installation
Step 6
Loosen the adjustment screw on the side of the lens assembly, then re-tighten
it after adjusting the lens assembly to the desired vertical angle. The camera
supports from 30° to 90° of tilt.
You can also adjust the pan within a -120° to 120° range by rotating it clockwise
or counter-clockwise.
When you are done adjusting the camera's angle, put the inner cover back into
place.
Note: The camera has a limited range of motion; if it stops when you are adjusting
it, do not attempt to rotate or tilt the camera any further in that direction.
Step 7
Use the screws provided to mount the camera to the ceiling.
Step 8
Re-attach the camera cover.
D-Link DCS-4633EV User Manual 11