Filter
Top Products
C2462M-B (10/05) 15
VERTICAL PHASE ADJUSTMENT (24 VAC OPERATION ONLY)
When using more than one camera power supply, a brief vertical roll may occur on the monitor
when a camera view is switched. To eliminate vertical roll reverse the 24 VAC connections on one
camera. If both cameras are connected to the same transformer, this should solve the problem. If
reversing the connections does not solve the problem, adjust the phase control by synchronizing, or
line-locking, the cameras to one another.
How to Adjust the Phase Control
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:
1. Choose a reference camera to which all other cameras will be phased.
2. Select a camera and synchronize it to the reference camera by turning the phase adjustment
control (refer to Figure 12) clockwise and/or counterclockwise.
3. Each time an adjustment is made, switch back and forth
between the camera you are adjusting and the reference
camera. Repeat this process as many
times as necessary, until the roll between
the cameras is no longer noticeable.
4. Adjust the phase of all other cameras by
repeating steps 2 through 3. Always adjust
to the reference camera selected in step 1.
NOTE: The preferred method for camera
phase adjustment is to use a dual trace
oscilloscope to align the vertical sync
pulses of the reference camera to the
selected camera(s).
Figure 12. Vertical Phase Adjustment