Hall Research VS-2 - Manual (Page 9)

7
COMPACT ELECTRONIC VGA SWITCH
ASCII 2 (or Hex32)
Selects input #2 (immediately and unconditionally). The device
will respond with:
In #2 Selected
If the previously displayed output was input #1, similar to above
a 25 ms blanking period is automatically inserted.
ASCII a (or Hex61)
Selects Auto Mode; the device will respond with:
Auto Mode
In auto mode the device automatically switches to the video
input source that is active. “Active” means that video signal has
sync signal, it does not mean that there is a non-static screen! If
both inputs are active, then the VS-2 stays on the currently
selected video until the video signal ceases, then it will switch to
the other channel if there is good video present there.
ASCII b (or Hex62)
Blanks the video output. The device will respond with:
Blanked output
When output is blanked, only the color intensities of the output
are reduced to zero, the box still operates in normal fashion and
sync signals are still routed to the output.
ASCII u (or Hex75)
Un-blanks the video output. The device will respond with:
Unblanked output