Serial Ports
The switchers have two serial ports that can be connected to a host device such as a
computer running the HyperTerminal utility, an RS-232 capable PDA, or a control system.
These ports make serial control of the switcher possible. The serial ports are:
• The rear panel Remote (RS-232 or RS-422) port, a 9-pin D female connector
• The front panel Configuration (RS-232) port, a 2.5 mm mini stereo jack
The default protocol for both ports is as follows:
• 9600 baud • no parity • 8-bit
• 1 stop bit • no flow control
The ports can be configured to operate at the 9600, 19200, 38400, or 115200 baud rate.
NOTES:
• These ports are independent of one another. A front panel Configuration port
connection and a rear panel Remote RS-232/RS-422 port connection can be
active at the same time.
• Extron recommends leaving both ports at 9600 baud only.
Rear Panel RS-232/RS-422 Port
The rear panel RS-232/RS-422 port can support either RS-232 or RS-422 serial
communication protocol. See Selecting the Rear Panel Remote Port Protocol and
Baud Rate on page 77 to configure the rear panel Remote port baud rate and protocol
from the front panel.
Front Panel Configuration Port
This port is hardwired for RS-232 only.
The optional 9-pin D to 2.5 mm mini jack TRS RS-232 cable can be used for connection to
the Configuration port.
NOTE: This port is independent of the rear panel Remote RS-232/RS-422 port and is
not affected by changes to the protocol of the rear panel port. The protocol of this front
panel port can be changed via SIS command control only. See the Set serial ports
parameters command on page 109, to configure either port under SIS control.
Ethernet (LAN) Port
The rear panel Ethernet connector on the switcher can be connected to an Ethernet LAN
or WAN. Communication between the switcher and the controlling device is via Telnet (a
TCP socket using port 23). The Telnet port can be changed, if necessary, via SIS. This
connection makes SIS control of the switcher possible using a computer connected to the
same LAN or WAN. The SIS commands and behavior of the product are identical to the
commands and behavior the product exhibits when you are communicating with it via a
serial port.
The Ethernet cable can be terminated as a straight-through cable or a crossover cable and
must be properly terminated for your application (see item i on page 27).
• Crossover cable — Direct connection between the computer and the CrossPoint or
MAV Plus switcher.
• Patch (straight-through) cable — Connection of the CrossPoint or MAV Plus
switcher to an Ethernet LAN.
CrossPoint and MAV Series Matrix Switchers • Programming Guide 90
