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Pelco Manual C1961M-B (3/01) 9
CAMERA SYNCHRONIZATION
The power supply of each camera is set to the same synchronized phase at the
factory and usually does not need to be readjusted.
When using more than one camera power supply, a brief vertical roll may occur on the
monitor each time a camera view is switched. To eliminate vertical roll, adjust the
phase control by synchronizing, or line locking, the cameras to one another. Use the
LL switches on the back of the camera to make adjustments.
It may be necessary to have two people in communication when synchronizing the
cameras–one person at the camera and another person at the monitor to observe the
vertical roll and the effect of any adjustments made at the camera.
To synchronize the cameras do the following:
1. Choose a camera to which all of the other cameras will be synchronized
2. Select a second camera that is out of synchronization with the first camera.
3. Adjust the camera phase by pressing the LL switches up or down.
4. Switch the cameras back and forth, observing the roll between the cameras when
they are switched.
5. Press the LL switches up or down and observe the roll each time an adjustment
is made.
6. Repeat this process as many times as necessary for each camera in the system.