SPLITMUX Quad Screen Video Splitter
34
COMMAND LINE INTERFACE
The SPLITMUX can be controlled using a command line interface from either a terminal connection to the “RS232” serial port
(page 8) or through an Ethernet connection (page 9).
RS232 Control
The RS232 Interface is designed to meet the RS232C standard and can be controlled from any CPU or other controller with an
RS232 communications port. The pin-out for the RJ45 connector on the unit is as follows:
RS232 (RJ45) CONNECTOR
PIN
SIGNAL
FUNCTION
1 -
No
connection
2 -
No
connection
3
RX+
Receive data (TXD at host)
4 GND Ground
5 -
No
connection
6
TX+
Transmit data (RXD at host)
7 -
No
connection
8 -
No
connection
A 5 foot patch cable and adapter, RJ45-to-DB9, have been provided for connection to most CPUs (see page 8). To daisy chain
multiple units, connect a Matrix-Y-1 cable (sold separately) between the CPU and the first switch, and between each switch (as
shown in Figure 31).
Baud Rate
The baud rate can be changed using the OSD menu (page 54), using Telnet commands (page 36) from the RS232 commands
(page 35), from the Text Menu (page 40), or through the WEB Interface (page 16). The baud rate can be set to 115200, 57600,
38400, 19200, 9600, 4800, 2400, or 1200. A data protocol of 8 data bits, no parity, and 1 stop bit is used for communications.
The default baud rate setting is 9600. The terminal should be in VT100 terminal mode.
Unit Address and Loop Back
To allow multiple units to be controlled from a single host port, the RS232 control interface is designed to allow "daisy chaining" up
to 15 units using an NTI Matrix-Y-1 cable. Connect the Matrix-Y-1 cable between the RJ45-to-DB9 serial adapter (provided with
the RS232 option) and the CPU as shown in Figure 31. By setting the appropriate unit address (page 16), each unit can be given
a unique address (1-15). Then the unit will only respond to commands on the bus if its address is embedded in the command.
