Hall Research DVS-4A - Manual (Page 16)

4-Port DVI Switch with Audio & Serial Control
14
ASCII ‘S’ or ‘s’ (Hex 53/73 or Decimal 83/115 )
Enters Scan Mode
If the unit was already in SCAN mode, the unit will respond
with the message:
Scan mode already selected
The user must select the desired scan time by entering a
number from 1 to 60 within 20 seconds. Entries outside
this range or delaying entry longer than 20 seconds will
result in a default setting of 5 seconds.
The device will respond with:
Scan mode selected
Please enter ‘time between switching’ (1-60 sec):
After the entry (or timeout), the device will respond with:
Scan non-active video? (y/n)’
Again the user must respond within 20 seconds.
Entries other than ‘Y’, ‘y’, ‘N’ or ‘n’ or delaying entry longer
than 20 seconds will result in an error message
corresponding to the last setting of the SCAN mode.
Invalid input! Scan only active video
Invalid input! Scan all video
In scan mode, the unit will display each of the video and audio
inputs for the selected time period. If the device was told to
scan non-active video inputs and no video is available on that
input, a black screen will be displayed for the selected time
period.