Extron electronics DVCM 50, User Manual

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2-7
DVCM 50 • Installation
PRELIMINAR
Y
Wiring the IRL 20
The Extron IRL 20 is a hard-wired IR signal receiver, which can be used with the
DVCM 50 and the IR 452 remote control. The IRL 20 receives a signal via its front
panel from the IR 452, which instructs the DVCM 50 to issue an IR command.
Wire and connect the IRL 20 to the DVCM 50 as described below.
+12
V
G
N
D
C
M
ModIR
SCP +12V
G
N
D
C
M
ModIR
SCP
IR SNSR
IRL 20
GND SIG +5V
+12 VDC
Ground ( )
A
B
External power supply
(12 VDC, 1A max.)
1
1
2
3
8 4 2 1
E
4
ON
2 3 4
IR OUT GND IR IN GND + 12V GND Rx Tx
D
B
A
+12 V
GND
Mod IR C
B
A
E D C B A
Connecting the DVCM 50 and the IRL 20
1 . If it was not already done, cut the required length of Extron Comm-Link
cable to go between the DVCM and the IRL 20. See appendix A for cable part
numbers. The maximum total distance between an Extron control module
and the IRL 20 is 150’ (45 m).
2 . Attach a 3.5 mm, 5-pole captive screw connector to the end of the cable that
will be plugged into the IRL 20.
3 . Connect the wires on the other end of the cable to the provided 3.5 mm 5-pole
captive screw connector as described below, and plug this connector into the
DVCM.
• A (DVCM) to A (IRL 20)
• B (DVCM) to B (IRL 20)
• C (DVCM) to D (IRL 20)
Do not connect more than one IRL 20 or IR Link (either in parallel or in series)
to the DVCM 50.
4 . Plug the 5-pole connector end of the cable that you wired in step 2 into one of
the IRL 20’s communications connectors.
5 . Connect power to the DVCM 50 or to the IRL 20.
+12 VDC power is shared between the DVCM 50 and the IRL 20 when they
are connected. You can wire the power supply to either the DVCM or the
IRL 20.