Hall Research DVS-2A - Manual (Page 12)

2-Port DVI Switch with Audio & Serial Control
10
. Serial Port Control Codes
Control codes are 1 byte commands from an external device to the Serial
Port on the DVS-2A.
ASCII ‘1’ (Hex 31 or Decimal 49)
Selects input #1 (immediately and unconditionally). The
device will respond with: PC 1 Input selected
If the device is in AUTO mode, the device will respond
with: Error: The unit is in auto mode
ASCII ‘2’ (Hex 32 or Decimal 50)
Selects input #2 (immediately and unconditionally). The
device will respond with: PC 2 Input selected
If the device is in AUTO mode, the device will respond
with: Error: The unit is in auto mode