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APPENDIX B: Setting Sync Signal Output Termination
Appendix B.
Setting Sync Signal Output Termination
In some cases, it may be necessary to disable the 75-ohm termination of the video
outputs on the CAT5 Multi VGA System units. This can be done by opening the
case of each unit and installing jumpers on the circuit board. The settings
disable/enable the 75-ohm termination on individual units. For instance, changing
a transmitter termination affects the local monitor port only; it doesn’t affect the
receivers. Conversely, changing a receiver affects the output port of the receiver,
not the transmitter. The following diagrams show the jumper locations for each
type of assembly.
Figure B-1. 1-port transmitter.
Figure B-2. 1-port or dual daisychainable receiver.
75-ohm sync termination:
To enable: Both jumpers OUT
To disable: Both jumpers IN
RJ-45
Port
Local
Port
VGA
In
VGA
Port
RJ-45
Port
RJ-45
Port
(dual
models
only)
75-ohm sync termination:
To enable: Both jumpers OUT
To disable: Both jumpers IN
