Gefen 4x2 HDMI - Manual (Page 12)

9
RS-232 SERIAL COMMUNICATION
What features are available via the RS-232 serial communications port?
The 4x2 Switcher for HDMI can accept commands through the RS-232 serial
communications port located on the rear panel. The current RS-232 control features
are:
• Switching/routing of inputs to outputs without the RMT-4IR remote control.
• Switch EDID management modes without opening the unit to physically modify DIP
switches.
• Change IR code channel without opening the unit to physically modify DIP switches.
(The IR code channel will still need to be manually modifi ed on the RMT-4IR remote
control to match the code channel.)
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 the
Hyperterminal program.
What pins are used for communication with the 4x2 Switcher for HDMI?
Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used for communication. A
null-modem adapter should not be used with this product.
1 2 3 4 5
6 7 8 9
1 2 3 4 5
6 7 8 9
Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface
What are the communication port settings?
Bits per second ................................................................................................. 19200
Data bits .................................................................................................................... 8
Parity .................................................................................................................. None
Stop bits .....................................................................................................................1
Flow Control ....................................................................................................... None