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IR signal sensors
These sensors allow for IR
remote control of the MLC
and for IR learning. The IR
remote control must be
pointed directly at these
devices for best results.
IR control receiver — This
5
larger infrared receiver
accepts IR signals from the
Extron IR 402 infrared
remote control, which
mimics the MLC's front
panel controls.
IR learning receiver — This
6
smaller sensor receives and
"learns" commands from other devices' infrared remotes in order to control
the projector or input devices such as a VCR or DVD player. IR learning of
projector control codes is only necessary if there are no RS-232 codes available
for that projector or if you need to customize the driver. The IR learning
procedure is discussed in the control software and later in this manual. See
chapter 4 for IR learning procedures. This receiver accepts infrared signals of
from 30 kHz to 62 kHz.
Configuration port
Config port — This is a front panel version of the rear panel Host Control
7
port (the 9-pin D connector), and it is independent of that port. This port
makes it possible to upload and configure device drivers and also to initiate
IR learning via a front panel connection after the MLC has been installed.
Connect a Windows-based PC or an RS-232 control system to this 2.5 mm
mini stereo-style (tip-ring-sleeve) connector. You can use the Extron 9-pin D
to 2.5 mm stereo mini TRS RS-232 cable (part #70-335-01) or make your own
cable. See chapter 2 for a wiring diagram and port protocol.
Optional Control Modules and IR 402 Remote Control
The MLC can "learn" IR commands from a VCR's, DVD's, tape deck's or other
device's remote control, allowing you to create an IR driver file that can be
incorporated into the MLC's event scripts. A command can be associated with each
of the buttons on an optional infrared control module (such as the Extron
IRCM-VCR, IRCM-DVD, IRCM-DVD+, IRCM-DV+, or IRCM-Tape) in order to
allow limited control of source devices. ACM control modules provide limited
remote control of adjustments to a slaved MediaLink Switcher (MLS).
MLC 226 Series • Front Panel Features and Basic Operation
This port requires 38400 baud communication, a higher speed than many other
Extron products use. The MLC configuration software automatically sets the
connection for the appropriate speed. If using HyperTerminal or a similar
application, make sure the PC connected to these ports is set for 38400 baud.
Control
4
5
6
LECTERN
LAPTOP
PC
PC
IR
CONFIG
MLC 226
or
MLC 226 IP
MLC 226 IP
40
40
30 feet
max.
IR 402
IR Learning
4
5
6
LECTERN
LAPTOP
PC
PC
IR
CONFIG
MLC 226 IP
15 15
2"–12"
(4–30 cm)
1
2
3
4
5
6
7
8
9
0
3-5
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