Extron Electronics System 8_10 Plus User Manual
Page 26

Extron • System 8/10 P
LUS
• User’s Manual
Rear Panel Connections
Video Loop Back
2-11
VLB Operation
The illustration below is an example of a decoder being used in Video Loop
Back, however, it could be any one of several types of decoders or line doublers.
When VLB is active, the System 8/10 P
LUS
operates as follows:
1. Composite video and S-Video sources are connected to any of the System 8/10
P
LUS
inputs except the last one.
2. Standard RGB inputs exit the switcher through the normal RGB output.
3. Composite Video or S-Video signals exit the switcher through their normal
Composite video or S-Video outputs and are routed to the external decoder or
scan doubler.
4. The RGBS output of the decoder or scan doubler is then “looped back” to the
last input (input #8 or #10) of the switcher, which is selected at the same time.
5. The RGBS output from the switcher goes to the projector.
This allows the System 8/10 P
LUS
to route only RGB signals to the display
device.
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