Hall Research VS-2A-PRG - Manual (Page 9)

7
2-Port VGA Switch w/Audio, Serial & EDID Programming
. RS-232 Control
The VS-2A-PRG can also be controlled via a serial device. The unit
operates at a baud rate of 4800 bps. From the serial port, you have full
control over the operation of the switched output, mode, and priority
buttons.
Note on RS-232 port availability on your PC
Most PCs and notebooks do not have a
serial port. So to program the Switch you
may need a USB to RS-232 Serial
converter. These are available from Hall
Research (Model USB-RS232-1).
The VS-2A-PRG will output a menu to a serial port on power-up. This
menu will also be displayed when a proper command is sent to it via a
serial port. To view the menu, An ASCII serial terminal or terminal
emulator software is needed. An example is Microsoft Windows

HyperTerminal (generally found in Accessories\Communication folder)
. To configure HyperTerminal
- Connect the VS-2A-PRG directly to any available COM
port on your PC. This could possibly be through a USB
converter also.
- 4800 Baud, 8 bits, No Parity, 1 Stop bit, No flow control
- Ensure that there is a 50ms delay between characters
transmitted to the VS-2A-PRG if you are going to use
the “Z” command to download the Binary EDID data to
the unit.