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MMX 32 VGA MTP • Remote Control 12
Remote Control
This section covers topics relating remote control operation, including:
• Output Control
• RS-232 Control
• Contact Closure Control
The rear panel Remote connectors of the switcher can be connected to the serial port output
of a host device such as a computer or control system, or to a contact closure device such
as the Extron MMX 32 AAP panel (part number 70-277-11) or MMX 32 MAAP panel (part
number 70-277-12 or -22). The contact closure connectors are two 5-pole captive screw
connectors, which control outputs 1 and 2 separately.
REMOTE
RS-232
+5V
2
1
1 2 3
Tx Rx
CONTACT
Output 1 control
Output 2 control
RS-232
connection
Figure 12. Remote Connectors Arrangement
Output Control
Momentarily short pin 1, 2, or 3 to ground to switch to that input. Use the +5 V port when
controlling the output with an MMX 32 AAP/MAAP panel.
RS-232 Control
The RS-232 connection makes software control of the switcher possible via the Extron
Simple Instruction Set (SIS) or the Extron Windows
®
-based control program. The RS-232
connector on the MMX 32 VGA MTP is a 3-pole captive screw connector.
The protocol for this connector is:
•9600 baud •8-bit •1 stop bit •no parity •no flow control
NOTE: For RS-232 connect transmit, receive, and ground connectors to control system
or PC.