Specifications

14 Video Multiplexer with Video Motion Detection
Camera Check
The multiplexer multicamera display capability makes checking
camera performance as simple as comparing two pictures on one
screen. This method is preferable to the direct camera to monitor
technique because it allows precise adjustment of each camera
against a chosen reference camera. This minimizes differences
between cameras, and picture quality is optimized.
NOTE: Before performing a camera check, complete the
monitor calibration procedure described in the
previous section. Adjusting camera picture quality is
more effective on a monitor which is already
calibrated.
The camera check procedure is as follows:
1. Complete the monitor calibration procedure.
2. Connect all system cameras directly to the multiplexer camera
inputs. Remove all connections to the looping (lower) camera
outputs.
3. Make sure that the multiplexer is set up for 75 ohm termination
(the default state). The switches on the back panel should be
down.
4. Select the format (2x2, 3x3 or 4x4) which displays all of the
attached cameras.
5. Pick the best looking picture and use that camera as a reference.
If necessary, adjust the camera for an optimum picture. Do
NOT adjust the monitor.
6. Adjust each remaining camera, in turn, for an optimum picture.
Try to obtain the same picture quality as the reference camera.
The cameras are now correctly adjusted with respect to the cali-
brated monitor and each other. You may now adjust the monitor
for the best overall display. If you choose to make further moni-
tor adjustments, it is best to do so with all cameras displayed.