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The DVI KVM over IP supports RS-232 pass-through, allowing the control of remote
RS-232 devices. The Sender and Receiver unit which are being used to pass-through
the RS-232 data must be set to the same baud rate as the RS-232 host and client.
In the example below, the Gefen 4x1 DVI Switcher w/ Audio Decoding (Gefen part no.
GTV-AUDDEC-N) has been connected to Receiver unit A. This is the RS-232 client.
We want to control this product from Sender unit S3, using a laptop PC (RS-232 host).
The channel numbers are listed in blue.
Figure 2.6 - Basic RS-232 connection
As shown in the User Manual for the Gefen 4x1 DVI Switcher w/ Audio Decoding,
the following settings are used:
Table 2.1 - RS-232 settings for the Gefen 4x1 DVI Switcher w/ Audio Decoding
Description Setting
Baud rate
19200
Data bits
8
Parity
None
Stop bits
1
Hardware ow control
None
Conrm that the same RS-232 settings are assigned to both the Sender and Receiver
units. Access the Web interface on both the Sender unit and Receiver unit to set the
proper RS-232 settings.
In the example, on the following page, we will begin by setting up Sender unit S3.
LAN
Receiver unit
Receiver unit
DVI Out
DVI Out
Sender unit
Sender unit
Sender unit
DVI In
DVI In
DVI In
GTV-AUDDEC-N
RS-232 controller
(Computer)
RS-232 device
(GTV-AUDDEC-N)
12
12
02
05
09
R
1
S
1
S
2
S
3
R
2
Operating the DVI KVM over IP
Using RS-232