Operating the DVI KVM over IP
Using RS-232
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
| | DVI Out | Receiver unit | | LAN |
| | | |
| | | | |
| | | R2 | 02 | Sender unit |
DVI Out | Receiver unit | | | | |
| | | | | S |
| R | | 12 | | 3 |
| 1 | | Sender unit | |
RS-232 controller (Computer)
12
DVI In
-N
-AUDDEC GTV
RS-232 device (GTV-AUDDEC-N)
| S | |
| 2 | |
Sender unit | | |
| 09 | DVI In |
1 | |
S | | |
05 | DVI In | |
| |
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 flow control | None |
Confirm 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.
