2-9MLC 226 Series • Installation: Labeling, Cabling, Mounting
PRELIMINARY
4
IR/Serial Output ports — Depending on how the MLC is configured via the
configuration software, these ports output either infrared signals or
unidirectional RS-232 signals for controlling various devices such as VCRs
and DVD players. Before it can be used for controlling a device, each port
must be set up via the configuration software for either IR or RS-232
communication and associated with a device driver.
The connector pins are labeled S (signal) and G (ground).
For RS-232 output (-5 VDC to +5 VDC), use the illustration below as a wiring
guide, then wire a serial cable into this captive screw connector.
RS-232 default protocol:
• 9600 baud
• no parity
• 8 data bits
• 1 stop bit
• pacing = 0 ms
IR/SERIAL OUT
S G
A
S G
B
S G
C
To a
Controllable
Device
G = Ground
S = Signal (Tx)
50'
(15.2 m)
(See note.)
Maximum distances from the MLC to the device being controlled may vary up
to 200 feet (61 m). Factors such as cable gauge, baud rates, environment, and
output levels (from the MLC and the device being controlled) all affect
transmission distance. Distances of about 50 feet (15 m) are typically not a
problem. In some cases the MLC may be capable of transmitting and
controlling a given device via RS-232 up to 250 feet (76 m) away.
For infrared (IR) output (0 to +5 VDC), wire an IR Emitter (2 emitters,
maximum, per port) as shown below for a modulated or demodulated signal
and ground. For specific information about wiring more than one IR Emitter
per port, refer to the Extron IR Emitter Installation Guide, part #68-808-01.
Alternatively, an Extron IR Broadcaster can be connected here if you need to
send out IR signals to a wider area than is possible for an IR Emitter. The IR
Broadcaster requires a +12 VDC power connection. The +12 V Out and
ground pins of the Projector port can be used to provide this power.
IR/SERIAL OUT
S G
A
S G
B
S G
C
IR Emitter 1
White Striped Wire
100'
(30.5 m)
G = Ground
S = Signal (IR)
See chapter 4 for details on how to set up these ports for IR or RS-232 control.
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