User guide

HDMI 4x1 Selection Switcher User Guide 5
Connection with the computer
To connect the switcher to a computer:
1. Use the DB9 cable (included) to connect the RS232 control port to a control
system or computer.
The adapter cable is pinned as follows:
Pin 1: Connects to the 2 pin of the male 9-pin connector (Tx).
Pin 2: Connects to the 5 pin of the male 9-pin connector (Gnd).
Pin 3: Connects to the 3 pin of the male 9-pin connector (Rx).
2. Install the serial driver on the computer, if needed.
3. Once properly connected, you can control the 4x1 HDMI selection switch by
sending RS232 command codes.