12
Simplex Multiplexer
Camera Check
The multicamera display in live mode makes checking camera
performance as simple as comparing two pictures on one
screen. This method is preferable to the direct camera to moni-
tor technique because it allows precise adjustment of each cam-
era against a chosen reference camera. This minimizes differ-
ences between cameras and optimizes picture quality.
NOTE: Before performing a camera check, complete the moni-
tor calibration procedure. Adjusting cameras with a
monitor that is out of adjustment does not help.
The camera check procedure is as follows:
1.
Complete the monitor calibration procedure.
2.
Connect all system cameras directly to the Simplex cam-
era inputs. Remove any devices connected to the looping
(lower) camera outputs.
3.
Make sure the Simplex is set up for 75-ohm termination.
The switches on the back panel should be set for
75
Ω
Ω
Ω
Ω
Ω
.
4.
Pick the best looking picture and use that camera as a ref-
erence. If necessary, adjust this camera for an optimum
picture. Do
not
adjust the monitor.
5.
Adjust each remaining camera, in turn, for an optimum
picture. Try to obtain the same picture quality as the refer-
ence camera.
The cameras are now correctly adjusted with respect to the cali-
brated monitor and each other. You may now adjust the moni-
tor for the best overall display. If you choose to make further
monitor adjustments, it is best done with all cameras displayed.