Gefen EXT-DVIKVM-441DL user manual RS-232 Serial Control, How do I use these features?

RS-232 SERIAL CONTROL

What features are available via the RS-232 serial communications port?

The 4x1 DVI KVM DL/SL Switcher can accept commands through the RS-232 serial communications port located on the rear panel. The current RS-232 control features are the ability to switch/route inputs to outputs without the RMT-4IR remote control.

How do I use these features?

These features were initially intended for utilization by custom installers in automated setups. However, these features can be tested by using any Windows PC with a terminal emulation program such as Putty*. The next few pages will show you how.

What pins are used for communication with the 4x1 DVI KVM DL/SL Switcher?

Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used for communication. A null-modem adapter should not be used with this Switcher.

5 4 3 2 1 1 2 3 4 5

9 8 7 6 6 7 8 9

Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface

What are the RS-232 communications port settings?
Bits per second	19200
Data bits	8
Parity	None
Stop bits	1
Flow Control	None
*Earlier versions of Microsoft Windowstm shipped with Hyperterminal.

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