Serial ports – Extron Electronics MPX 866 A User Guide User Manual
Page 16
Serial Ports
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RS-232 connectors — Connect one or two host devices, such as computers, touch
panel controls, or RS-232 capable PDAs to the switcher via these 3-pole captive screw
connectors for serial RS-232 (see figure 6). Use the supplied tie-wrap to strap the serial
cable to the extended tail of the connector.
Function
Pin
TX
RX
Gnd
Transmit data
Receive data
Signal ground
RS-232
PRIMARY
RS-232
SECONDARY
Tx Rx
Tx Rx
Controlling
Device
Ground ( )
Receive (Rx)
Transmit (Tx)
Ground ( )
Receive (Rx)
Transmit (Tx)
Bidirectional
Do not tin the wires!
Figure 6.
RS-232 connector
NOTES: • The length of exposed wires is critical. The ideal length is 3/16 inch
(5 mm). See the audio input connector
for more information.
• These two ports are hardwired for RS-232 only.
• The RS-232 Secondary port is active only if the front panel Configuration
port is not in use. If a front panel configuration connection is made, the
rear panel RS-232 Secondary port becomes inactive and the front panel
Configuration port is active.
• The switcher can operate at 9600, 19200, 38400, or 115200 baud rates.
Selecting the Baud Rate of the RS-232 Primary Port
” in the
“Operation” section to configure the RS-232 Primary port from the front
panel. See the
SIS command to configure all
ports under SIS control.
See “
” for definitions of the SIS commands (serial commands to
control the switcher via this connector) and “
install and use the control software.
If desired, connect an MKP 2000 or MKP 3000 remote control panel to the RS-232
connector of the switcher. See the MKP 2000 Remote Control Panel User Guide or the
MKP 3000 Remote Control Panel User Guide for details.
MPX 866 A Media Presentation Matrix Switcher • Installation
11