Extron Electronics MLC 104 Plus Series - Manual (Page 28)

Operation, Features, and Cabling, cont’d
MLC 104 Plus Series • Operation, Features, and Cabling 2-12
PRELIMINAR
Y
Additional control connections
b
CM/IR/SCP (CommLink) port — For remote control of the MLC 104 Plus
Series controller or other items, you can connect up to four Extron control
modules (IRCMs, ACMs, RCMs, CMs), one Extron infrared signal repeater
(IRL 20 or IR Link), and/or up to two Extron SCP 104 control panels to this
port. A maximum of seven devices can be connected to this port. See the
figures on pages 2-13 and 2-14.
N The SCP 104 must have firmware 1.01 or greater and DIP switch 4 in the
On (up) position to operate with an MLC 104 Plus Series controller. Refer to
the
SCP 104 User’s Manual for more details.
The SCP 104 replicates the MLC’s front panel controls. The SCP 104 and
the IR signal repeater can receive IR signals from an optional IR 402 remote
control and send them to the controller. Control modules can be used (once
the MLC is set up) to control VCRs, DVD players, tape decks, a projector lift,
or screen control. Refer to the appropriate device’s user’s manual.
N If outside factors such as fluorescent light interfere with and affect the function
of the MLC, you can disable IR control of the MLC. Using a special function
SIS command (65#), you can turn off the MLC’s ability to receive IR signals
from IR signal repeaters and SCPs.
The control modules, IR signal repeater, and SCPs
can be daisy chained. Wire the connections as shown
in the diagrams on the following pages.
Extron Comm-Link (CTL and CTLP) cable is
recommended for these connections. Before inserting
wires in the connectors, strip the cable and apply heat
shrink as shown at right.
T For best results and to avoid short circuits, Extron
recommends using shielded wires or wires insulated
using heat shrink (instead of bare wires) for the
common/drain wires.
N The maximum distance between the MLC and a
connected device is 200’ (61 m).
N The CommLink port provides up to 12 VDC for powering the SCP control panel
or other devices. The automatic current protection circuit for this port limits the
draw to 0.5 amperes.
N SCP control panel or control modules (CM, IRCM, RCM) used with the MLC are
affected by front panel security lockout (executive mode) status changes.
3/16”
(5 mm) Max.
7/8”
(22 mm)
Heat Shrink on
Outer Jacket to
Inner Conductor
Transition
Extron
Comm-Link
Cable