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MTPX Plus Twisted Pair Matrix Switchers • Programmer’s Guide
4-2
Programmer’s Guide
Serial Ports
The switcher has 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Conguration(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owcontrol
Theportscanbeconguredtooperateatthe9600,19200,38400,or115200baud
rate.
N
These two ports are independent of one another. A front panel Configuration
portconnectionandarearpanelRemoteportconnectioncanbeactiveatthe
same time.
N
 Theswitchercanoperateat9600,19200,38400,or115200baudrates,but
Extronrecommendsleavingtheseportsat9600baudonly.
Rear panel Remote port
RS-232 Function Pin Function
1
2
3
4
5
6
7
8
9
—
TX
RX
—
Gnd
—
—
—
—
Not used
Transmit data
Receive data
Not used
Signal ground
Not used
Not used
Not used
Not used
—
TX–
RX–
—
Gnd
—
RX+
TX+
—
Not used
Transmit data (–)
Receive data (–)
Not used
Signal ground
Not used
Receive data (+)
Transmit data (+)
Not used
RS-422
5
1
9
6
RS232/RS422
REMOTE
Figure 4-1 — Remote connector pin assignments
N
 TherearpanelRemoteportcansupporteitherRS-232orRS-422serial
communicationprotocol,andcanoperateat9600,19200,38400,or115200
baudrates.See“SelectingtherearpanelRemoteportprotocolandbaudrate”in
chapter3,“Operation”,toconguretherearpanelRemoteportfromthefront
panel.