WARNING: This symbol, , when used on the product, is intended to
alert the user of the presence of uninsulated dangerous voltage within
the product’s enclosure that may present a risk of electric shock.
ATTENTION: This symbol, , when used on the product, is intended
to alert the user of important operating and maintenance (servicing)
instructions in the literature provided with the equipment.
For information on safety guidelines, regulatory compliances, EMI/EMF
compatibility, accessibility, and related topics, see the Extron Safety and
Regulatory Compliance Guide, part number 68-290-01, on the Extron
website, www.extron.com.
Instructions de sécurité • Français
AVERTISSEMENT: Ce pictogramme, , lorsqu’il est utilisé sur le
produit, signale à l’utilisateur la présence à l’intérieur du boîtier
du produit d’une tension électrique dangereuse susceptible de
provoquer un choc électrique.
ATTENTION: Ce pictogramme, , lorsqu’il est utilisé sur le produit,
signale à l’utilisateur des instructions d’utilisation ou de maintenance
importantes qui se trouvent dans la documentation fournie avec le
matériel.
Pour en savoir plus sur les règles de sécurité, la conformité à la
réglementation, la compatibilité EMI/EMF, l’accessibilité, et autres sujets
connexes, lisez les informations de sécurité et de conformité Extron,
réf. 68-290-01, sur le site Extron, www.extron.fr.
Sicherheitsanweisungen • Deutsch
WARNUNG: Dieses Symbol auf dem Produkt soll den Benutzer
darauf aufmerksam machen, dass im Inneren des Gehäuses dieses
Produktes gefährliche Spannungen herrschen, die nicht isoliert sind
und die einen elektrischen Schlag verursachen können.
VORSICHT: Dieses Symbol auf dem Produkt soll dem Benutzer in
der im Lieferumfang enthaltenen Dokumentation besonders wichtige
Hinweise zur Bedienung und Wartung (Instandhaltung) geben.
Weitere Informationen über die Sicherheitsrichtlinien, Produkthandhabung,
EMI/EMF-Kompatibilität, Zugänglichkeit und verwandte Themen finden Sie in
den Extron-Richtlinien für Sicherheit und Handhabung (Artikelnummer
68-290-01) auf der Extron-Website, www.extron.de.
Instrucciones de seguridad • Español
ADVERTENCIA: Este símbolo, , cuando se utiliza en el producto,
avisa al usuario de la presencia de voltaje peligroso sin aislar dentro
del producto, lo que puede representar un riesgo de descarga
eléctrica.
ATENCIÓN: Este símbolo, , cuando se utiliza en el producto, avisa
al usuario de la presencia de importantes instrucciones de uso
y mantenimiento recogidas en la documentación proporcionada
con el equipo.
Para obtener información sobre directrices de seguridad, cumplimiento
de normativas, compatibilidad electromagnética, accesibilidad y temas
relacionados, consulte la Guía de cumplimiento de normativas y seguridad
de Extron, referencia 68-290-01, en el sitio Web de Extron, www.extron.es.
Korean
경고: 이 기호 , 가 제품에 사용될 경우, 제품의 인클로저 내에 있는
접지되지 않은 위험한 전류로 인해 사용자가 감전될 위험이 있음을
경고합니다.
주의: 이 기호 , 가 제품에 사용될 경우, 장비와 함께 제공된 책자에 나와
있는 주요 운영 및 유지보수(정비) 지침을 경고합니다.
안전 가이드라인, 규제 준수, EMI/EMF 호환성, 접근성, 그리고 관련
항목에 대한 자세한 내용은 Extron 웹 사이트(www.extron.com)의
Extron 안전 및 규제 준수 안내서, 68-290-01 조항을 참조하십시오.
FCC Class A Notice
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part15 of the FCC rules. The ClassA limits provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference; the user must correct the interference at his own expense.
NOTE: This unit was tested with shielded I/O cables on the peripheral devices. Shielded
cables must be used to ensure compliance with FCC emissions limits.
For more information on safety guidelines, regulatory compliances,
EMI/EMF compatibility, accessibility, and related topics, see the “Extron Safety and
Regulatory Compliance Guide” on the Extron website.
Mud Ring ..................................................... 64
MLC 52 IR VC and MLC 52 RS VC Cutout
Template for the Two-gang Decora
Mud Ring ..................................................... 65
MLC 52 IR and MLC 52 RS Cutout
Template for Mounting Directly to a Wall
or Furniture ................................................. 66
MLC 52 IR VC and MLC 52 RS VC Cutout
Template for Mounting Directly to a Wall
or Furniture .................................................. 67
............. 57
MLC 52 MediaLink Controllers • Contentsvi
Introduction
This section gives an overview of the MLC 52 User Guide and describes the Extron
MLC 52 Series MediaLink® Controllers and their features. Topics include:
• About this Guide
• About the MLC 52 Series MediaLink Controllers
• Application Diagrams
About this Guide
This guide contains detailed information and best practice recommendations about cabling,
programming, and configuring the MLC 52 Series MediaLink Controllers and provides
specifications and dimensions.
Throughout this guide the MLC 52 controllers are referred to as “MLC 52,” “MLC,” “MLC
series,” or “controller.”
About the MLC 52 Series MediaLink Controllers
The MLC 52 Series enable RS-232 or infrared (IR) remote control of a projector or other
display device. They are economical, compact (one-gang or two-gang size), easy-to-use
controllers for use with audio/video equipment in sites such as elementary or high school
classrooms or small conference rooms. The MLC 52 acts as a universal remote control
panel, providing control of the power, input selection, volume, and other functions of a
display device. Device control is provided via the MLC front panel buttons or via a host
computer or control system using RS-232 communication and the Extron Simple Instruction
Set (SIS™) commands or the Extron MLC 52/DVCM 50 Configuration Program.
The MLC 52 can be configured using three different methods:
• IR learning
• IR data transfer (“beaming”) from another MLC 52
• Using Extron device control drivers with the MLC 52 configuration software program
®
Models
US models
• MLC 52 IR — One-gang size. Controls the display device by IR.
• MLC 52 IR VC — Two-gang size. Controls the display device via IR. This model has
a volume control knob to control an amplifier such as the Extron MPA Mini Power
Amplifier (purchased separately).
• MLC 52 RS — One-gang size. Controls the display device by either IR or RS-232.
• MLC 52 RS VC — Two-gang size. Controls the display device by either IR or RS-232.
This model has a volume control knob to control an amplifier such as an Extron MPA
Mini Power Amplifier (purchased separately).
MLC 52 MediaLink Controllers • Introduction1
European models
• MLC 52 RS EU — European two-gang size. Controls the display device by either IR
or RS-232.
• MLC 52 RS EU VC — European two-gang size. Controls the display device by either
IR or RS-232. This model has a volume control knob to control an amplifier such as
an Extron MPA Mini Power Amplifier (purchased separately).
MK models
• MLC 52 RS MK — UK one-gang size. Controls the display device by either IR or
RS-232.
• MLC 52 RS MK VC — UK two-gang size. Controls the display device by either IR
or RS-232. This model has a volume control knob to control an amplifier such as an
Extron MPA Mini Power Amplifier (purchased separately).
The cabling, operation, and setup are identical for all MLC 52 models. All have the same
button functionality.
Standard Features
• IR and RS-232 ports for universal display device control — The MLC 52 has a
dedicated port for communicating with virtually any projector or display via infrared
signal. The MLC 52 RS models also have ports for unidirectional RS-232 wired serial
control. Projector control drivers can be downloaded from www.extron.com or can
be created using the MLC 52 configuration program.
• Discrete On and Off display device power controls — These controls simplify
system operations and eliminate the need for a handheld display or projector remote
control.
• Configurable, backlit buttons — The front panel buttons can be set up to control
display device power, volume, input selection, or any other IR or RS-232 command
function supported by the device. The buttons are backlit and can be custom labeled,
offering easy operation in low-light environments.
• Macro and toggle button modes — Each button on the MLC can be programmed
to send out up to four IR or serial commands. You can set each button to issue all its
commands with one press (macro mode) or to issue its commands one at a time, in
sequence, with each button press (toggle mode).
• Front panel configuration port — This RS-232 serial port enables advanced
configuration, driver downloads, and firmware updates to be performed from the
front panel without the need to remove the controller from its mounting. The optional
Extron configuration cable (part number 70-335-01) can be used to connect the
MLC 52 to the RS-232 port of the computer.
• Three configuration methods — The MLC 52 can be configured easily using the
following methods:
•IR learning — Allows the MLC 52 to be set up directly from the remote control
of the display device without the need for software.
•IR data transfer — Duplicates complete configuration information from one
MLC 52 model to another without cables or software.
•Configuration software — Combined with one of the many IR or RS-232
drivers that are provided with the controller on DVD or available on the Extron
website, the Extron MLC 52 Configuration Program provides fast and simple
setup.
MLC 52 MediaLink Controllers • Introduction2
• Inactivity timer for display shutoff — Adjustable timer control provides automatic
shutdown of the display device to conserve energy, prevent plasma burn-in, and
extend projector lamp life.
• Front panel security lockout — Front panel lockout (executive mode) can be
implemented where the MLC 52 is installed in an unsecured environment and
universal access is not desirable.
• Flexible mounting options — With a standard electrical box or one of the included
mounting brackets (“mud rings”), the MLC 52 can be mounted in a variety of
locations, including walls and lecterns.
• Volume control (VC) faceplates — The two-gang sized VC models each have
an integrated volume control knob in addition to the six control buttons. To use this
knob, connect the MLC 52 to a power amplifier (purchased separately), such as the
Extron MPA Series Mini Power Amplifier that is also connected to the projector or
display (see the application diagrams on page 4). The volume control knob adjusts
the volume on the amplifier.
This option frees the two volume control buttons on the MLC to be used or
reconfigured for other display device functions. On these models, the two buttons
normally used for volume control on the standard MLC 52 models can be
programmed to control additional outputs or other projector or display functions.
• Section 508 Compliant — The MLC 52 meets or exceeds accessibility
standards for Electronic Information Technology. For more information about the
Extron Commitment to Accessibility, see the Accessibility at Extron web page at
• Power supply — A 12 V, 1 A, external universal ENERGY STAR® qualified power
supply, part number 70-775-01, is included and provides worldwide compatibility, low
power consumption, and reduced operating costs.
NOTE:The Extron PS 124 and other Extron power supplies can also be used
with the MLC 52.
Options and Accessories
• MPA Series Mini Power Amplifier — Connect an MPA 152 (part number
60-844-01) to the volume control port of the MLC 52 VC models, and to your
projector or display and speakers. This enables you to use the MLC volume knob to
control the volume of the speakers via the MPA.
• Remote control — The optional IRL 20 signal repeater provides infrared remote
control of the MLC unit from up to 30 feet (9.1 m) away. The signal repeater works
with any Extron hand-held IR remote control.
MLC 52 Configuration Software
The included MLC 52/DVCM 50 Configuration Program is used to configure the MLC
buttons and ports via an RS-232 connection. This software, provided on a DVD that is
delivered with the product, enables you to set functions for the front panel buttons and
to configure the MLC ports in order to control devices via the MLC. The software works
in combination with the IR or RS-232 drivers, also provided with the MLC on DVD or at
www.extron.com (see Installing the Software from the DVD on page 48 to access
this program).
MLC 52 MediaLink Controllers • Introduction3
Device Drivers
In order for the MLC 52 to control a switcher, projector, or other display device via IR or
RS-232 communication, it must have drivers loaded for the devices it will control. Drivers
can be obtained in the following ways:
• IR or an RS-232 driver files can be installed from a disc, downloaded at
www.extron.com, or downloaded from Extron via the driver subscription feature
within the MLC 52 configuration program.
The drivers are saved on your computer in a folder located at C:\ProgramFilesor
Program Files (x86)\Extron\Driver2. You can then upload the desired drivers to
the MLC via the MLC 52 configuration software.
• IR commands can be captured from the IR remote control of a device through
IR Learning or IR data transfer to create a driver. When a driver is created, it can be
added to the configuration program so that the commands can be used to configure
the MLC to control the device (see Configuring the MLC 52 Using IR on page 15).
System Requirements
The minimum PC system requirements for installing the configuration software are:
• Intel® Pentium® III 750 MHz processor
• Microsoft® Windows® XP or higher
• Microsoft.NET Framework 2.0 or higher
• 128 MB of RAM
• 50 MB of available hard disk space
Application Diagrams
RS-232 Control
DI SP LAY
OFF
Projector with
Internal Speakers
VGA
Stereo Audio
Video
Stereo Audio
DVD
PC
Figure 1. Application Diagram for an MLC 52 RS
ON
PC
VOL
VIDEO
VOL
ML C 5 2
Extron
MLC 52 RS
Basic MediaLink
Controller with IR
and RS-232 display
control
MLC 52 MediaLink Controllers • Introduction4
DVD/VCR Combo
S-video and
Composite Video
with Audio
Audio Output
Projector
PC VGA with
Audio
Extron
MPA 152
Mini Power Amplier
OUTPUT
L
CLASS 2 WIRING
REMOTE
DO NOT GROUND
OR SHORT
SPEAKER OUTPUTS!
MPA 152
US
INPUTS
C
LISTED
17TT
AUDIO/VIDEO
APPARATUS
POWER
12V
3A MAX
RS-232
Projector Control
R
L
R
L
Extron
SI 26X
Ceiling Speakers
4/8
OHMS
R
VOL/MUTE
10V 50mA
Volume
Control
DIS PLAY
OFF
Extron
PC
MLC 52 RS VC
Basic MediaLink Controller
with IR, RS-232, and
MLC 52
Volume Knob
Projector ON/OFF control
Projector input switching
MPA volume control
VOLUME
ON
VCR
DVD
Figure 2. Application Diagram for an MLC 52 RS VC
MLC 52 MediaLink Controllers • Introduction5
Installation and
5
1
1
2
3
4
E
ON
234
6
1
Tx
IR OUT
GND
IR IN
GND
+ 12V
3
2
Configuration
This section describes the front, side, and rear panel features of the four MLC 52 models,
and provides procedures for installing and configuring the controllers. Topics include:
• Rear Panel and Cable Connections
• Installation Steps
• Replacing the Faceplate (US Models Only)
• Replacing Button Labels
• Wiring the Control Connector
• Configuring the MLC 52 Using IR
• Setting Up an MLC 52 VC Model with an Extron Amplifier
• Mounting the MLC 52
Rear Panel and Cable Connections
The following diagrams show the locations of the connector, switches, LEDs, and IR
1
6
sensors on the back of the MLC 52 with standard and VC faceplates.
Figure 5. MLC 52 RS EU and MLC 52 RS EU VC Rear Views
aIR Learner/Transmitter — These sensors allow for IR control of the MLC and for
IR Learning. The two LEDs (one for transmitting, one for receiving) send and receive
IR signals, enabling the MLC to learn commands and clone configurations from
another MLC 52. The IR remote control of the display device must be pointed directly
at these LEDs for best results.
The MLC can “learn” IR commands in order to control the display device. IR Learning
of device control codes is necessary only if there are no RS-232 codes available
for that device or if you need to customize the driver (see Configuring Using IR
Learning on page 18 for the IR Learning procedure).
You can also perform IR learning via the MLC 52 configuration software (see the
MLC 52 Configuration Program help file for the procedure).
b Enable Macro LED — The LED located immediately above or to the right of the four
green IR LEDs is labeled E, for Enable Macro. This LED lights amber when you place
a button in macro mode (see Setting Up Button Macros Using IR on page 20).
MLC 52 MediaLink Controllers • Installation and Configuration7
c Configuration switches — When set to On, these DIP switches place the MLC in IR
learning or data transfer mode, or disable IR repeats.
•Switch 1: Enables IR learning.
•Switch 2: Enables data transfer, such as cloning the current MLC configuration
onto another MLC 52 (see Configuring Using IR Data Transfer (IR Beaming)
on page 15).
•Switch 3: Disables IR repeats during playback. For most applications, this switch
is placed in the off position.
Switch 4 is not used.
dVolume control (VC models only) connector — Connect an amplifier such as
the Extron MPA 152 or a PoleVault switcher to this direct-insertion captive screw
connector to enable the volume control knob on the MLC 52 VC front panel to raise
and lower the volume on the display device via the amplifier or switcher.
NOTE: This port must be connected only to an Extron device such as a
PoleVault® PVS switcher, an MP Series microphone-to-line preamplifier, or an
MPA Series audio amplifier.
eDisplay control and power connector — This shared six-pole, 3.5 mm captive
screw connector is used for IR and RS-232 control of the display device and for DC
power (see Wiring the Control Connector on page 12 for information on how to
connect supported devices to the MLC).
Installation Steps
NOTE: The RS-232 projector control port is present on this connector but not
functional on the IR models. The port is functional only on the RS models.
f IR Learning indicators — Each button on the MLC front panel has four memory
blocks, which can be programmed with up to four IR (or RS-232) commands. The
IR Learning indicator LEDs provide visual feedback indicating the following:
•Which of the four memory blocks contains a command
•Which of the four memory blocks is ready to be programmed or configured
•The IR learning status of the controller
See Configuring Using IR Learning on page 18 for details.
ATTENTION:
• Installation and service must be performed by authorized personnel only. UL
listed electrical boxes are recommended.
• If using an electrical box, ensure that it is grounded properly.
To install and set up the MLC:
1. If applicable, prepare the installation site (see Mounting the MLC 52 on page 23 and
Mounting an Electrical Box on page 63; or see the instructions provided with the
optional faceplate, mounting device, or electrical box).
2. Make and install button labels as desired (see Replacing Button Labels on
page 10).
MLC 52 MediaLink Controllers • Installation and Configuration8
3. If you want to use a different faceplate from the one that is attached, remove the
installed faceplate from the MLC, and replace it with the new one (see Replacing the
Faceplate [US Models Only]).
4. Attach cables to the rear of the MLC and to the display device as well as any optional
devices such as the MPA Mini Power Amplifier, IR emitters, and IRL 20.
5. Connect power cords and turn on all the devices, including the MLC.
6. Configure the controller using one of the following methods:
•IR learning (see Configuring Using IR Learning on page 18)
•IR data transfer (beaming) (see Configuring Using IR Data Transfer (IR
Beaming) on page 15)
•Configuration program (see Using the MLC 52/DVCM 50 Configuration
Program on page 47 to start the program. See the configuration program help
file for detailed information on using the software.)
7. Test the system: press the MLC buttons, watch the display, and listen to the audio
output to determine whether the output devices are responding correctly (powering
on and off, switching inputs, and so on).
If the outputs are not responding, ensure that all devices are plugged in and receiving
power. Check the cabling, and make adjustments as needed.
8. Mount the MLC to the wall or furniture.
a. Disconnect the MLC power supply at the power source end (not at the MLC end).
b. Disconnect power from the other devices.
c. Secure the faceplate onto a UL-approved electrical wall box, a mounting bracket,
a wall, or furniture (see Mounting the MLC 52 on page 23).
d. Restore power to the MLC and to the connected devices.
Replacing the Faceplate (US Models Only)
The MLC is delivered with a black plastic faceplate attached, and an additional onegang plastic faceplate in white. You can replace the black faceplate with the white one
or with a different one-gang sized faceplate of your own. You can also replace it with
the MLM 52 VC two-gang metal faceplate with the volume control knob (part number
70-538-02 or -03), which is available in black or white. MLM 52 faceplate replacement
kits can also be ordered (see Optional Accessories on page 62).
NOTE: See the MLM 52 1GWP and MLM 52 VC User Guide for further information
on faceplates for the MLC 52.
To replace the faceplate:
1. Hold the MLC face down. Use a small Philips screwdriver to remove the three
attachment screws (marked a in figure 6 on the next page) from the back of the
MLC, and keep them to replace later.
2. Lift the MLC off the faceplate (see figure 7 on the next page).
3. Place the MLC onto the new faceplate, aligning the MLC buttons with the openings in
the new faceplate and the three screw holes with the faceplate standoffs.
4. Replace the three screws removed in step 1 and tighten them.
MLC 52 MediaLink Controllers • Installation and Configuration9
Figure 6_Remove screws
1
E
4
3
ON
2
1
1
234
Tx
IR OUT
GND
IR IN
GND
1
+ 12V
1
Figure 6. Screws to Remove from the MLC Faceplate
Figure 7_New faceplate
MLC 52
Replacing Button Labels
Standoff
Faceplate
Figure 7. Installing the MLC onto a New Faceplate
The button caps are prelabeled for your convenience. However, you can replace the labels
with others that are included with the MLC, as follows:
1. The button assembly consists of a clear lens cap, the button label, and a white
diffuser (see figure 9 on the next page). Remove the button assembly by inserting
a small, flat-bladed screwdriver between the base and the diffuser of the button to
gently pry the button assembly away from the base, as shown in figure 8.
Pry the button assembly
from the base.
Figure 8. Pry the Button Button Assembly Off the Base
MLC 52 MediaLink Controllers • Installation and Configuration10
2. Locate the small corner notch on the lens cap, and slide the screwdriver between the
lens cap and the diffuser (see b in the illustration below).
3. Using a rotating motion of the screwdriver, carefully pry the two pieces apart (see c
in figure 9).
Plunger
Base
Clear Lens
2
Separate the twopiece button here at
the corner.
Notch
TEXT
3
Pry the two
pieces apart.
Diffuser
Button Label
Figure 9. Removing and Replacing a Button Label
4. Lift out the transparent square label that you want to replace. You may need to use a
small screwdriver to gently pry the label out.
5. Detach one of the preprinted labels or a blank one from the label sheets included with
the MLC 52. Remove the label from the diffuser and, if applicable, peel the protective
film from the front of the label.
NOTE: If you want to create customized labels, you can use a label maker, such
as the Brother® P-touch®, and clear label material to print text to place on the
blank labels. Cut the labels so that they are square and measure ½ inch on
each edge.
6. Insert the new label into the clear button cap, align the white diffuser with the cap,
and firmly snap it into place.
7. Gently, but firmly, press the reassembled button into place on the MLC 52 front panel.
8. Repeat steps 1 through 7 as needed to relabel other buttons.
MLC 52 MediaLink Controllers • Installation and Configuration11
Wiring the Control Connector
F E D C B A
RS-232 Tx (RS models only)
The display and source control connector allows you to connect cables for IR devices,
RS-232 devices (RS models only), and AC power to the MLC. The illustration below
shows the MLC control connector pin assignments that are described on the following
pages.
Figure 10. Pin Assignments for the MLC 52 Display and Source Control
The ports in this connector, from left to right, perform the following functions:
• F (Tx)
NOTE: Although this port is present on both the IR and the RS models, it is
• E (IR out) — Used for connecting an IR emitter to issue IR commands. Up to two
emitters can be wired to this port.
• D (GND) — Ground for IR or RS-232 projector control
• C (IR in) — Used for connecting an optional IRL 20, so that an IR remote control can
control the MLC.
• B (GND) — Ground for the +12 VDC power
• A (+12 V) — Power input for the product (12 VDC)
NOTE: The two-gang MLC 52 IR VC and MLC 52 RS VC have the same control
ports as the one-gang models.
IR out
Gnd
IR in
Gnd
12 V DC in
Connector
— Transmits the RS-232 signal for projector control.
functional only on the RS models.
Wiring for RS-232 Control (RS Models Only)
The MLC 52 RS and the MLC 52 RS VC send out RS-232 commands via the Tx port
(pin F) for controlling a display device.
If you have an RS model and want to control the device via RS-232, connect a cable
between the device and this 3.5 mm, 6-pole direct insertion captive screw connector.
Wiring varies depending on the device model. In most cases, only the transmit (Tx) and
ground connections are needed.
• Connect the transmit wire to the F pin.
• Connect the ground wire to the D pin.
(See figure 11 on the next page.)
MLC 52 MediaLink Controllers • Installation and Configuration12
FIG_Wiring for RS-232
F Transmit (Tx)
RS-232
D Ground (Gnd)
To the Display or Projector
RS-232 Port
F E D C B A
Figure 11. Wiring for RS-232 Control (RS Models Only)
Extron recommends using the CTL Series Comm-Link Control System Cable, available
in lengths of 500 feet (150 m) (non-plenum only) and 1000 feet (300 m) (plenum and
non-plenum) for this connection (see Recommended Cables on page 62 for ordering
information).
Guides for connecting and controlling specific models of display devices are available on
the Extron website. See the display device user guide for the device pin assignments in
order to determine which of the cables wires to connect to the MLC RS-232 pins.
Wiring for IR Control
To control display or input devices via IR commands from the MLC, you can connect
Extron IR emitters to the IR Out pin of the control connector. Up to two IR emitters can be
connected via this connector at one time. Wire the connector as shown in the following
illustrations.
White Striped Wire Only
Modulated IR
E
Ground
D
100 Feet (30.5 m) Maximum
MLC 52
Control
Connector
NOTE: Place the head of each IR Emitter
F E D C B A
IR
For the IR Emitter Only
over or directly adjacent to the IR receiver
for the controlled device.
IR
Emitter
Connect 1 or 2
IR Emitters (max.)
(#70-283-01).
Demodulated IR
E
D
Ground
MLC 52
Control
Connector
F E D C B A
IR
For a Wired Projector
Remote Port
Figure 12. Wiring the Control Connector for IR
MLC 52 MediaLink Controllers • Installation and Configuration13
To the Wired Remote
Port of the Projector
(Connector type and
pin configurations may
vary depending on the
projector model.)
Wiring an IRL 20
The Extron IRL 20 is a hard wired IR signal receiver that can be used with the MLC 52 and
an IR remote control. The IRL 20 receives a signal via its front panel (or an IR sensor) from
the IR remote control, and outputs a modulated IR signal via an IR emitter.
Wire and connect the IRL 20 to the MLC 52 as follows:
1. If it has not been done, cut the required length of Extron CTL (Comm-Link) cable to
connect the MLC 52 to the IRL 20 (see Recommended Cables on page 62 for
cable part numbers).
The maximum total distance between an Extron controller and the IRL 20 is 150 feet
(45.7 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.
Modulated IR
Control Connector
for MLC 52 Series
(Rear Panel)
Tx
IR OUT
GND
IR IN
GND
F E D C B A
+ 12V
C
B
GND
A
+12 V
D
B
A
+12V
GND
CM
SCP
+12V
ModIR
GND
IR SNSR
CM
SCP
GND
ModIR
SIG
IRL 20
+5V
+12 VDC
Ground (Gnd)
External Power Supply
(12 VDC, 1 A max.)
A
B
Figure 13. Wiring an IRL 20
3. Connect the wires on the other end of the cable to the provided 3.5 mm 6-pole
captive screw connector.
•A (MLC) to A (IRL 20)
•B (MLC) to B (IRL 20)
•C (MLC) to D (IRL 20)
NOTE: Do not connect more than one IRL 20 (either in parallel or in series) to an
Extron device.
4. Plug the 5-pole connector end of the cable into one of the IRL 20 communications
connectors.
5. Plug the 6-pole connector end of the cable into the control port on the MLC 52 back
panel.
6. Connect power to the MLC or the IRL 20.
NOTE: The +12 VDC power is shared between the MLC 52 and the IRL 20
when they are connected. You can wire the power supply to either the MLC or
the IRL 20.
MLC 52 MediaLink Controllers • Installation and Configuration14
Wiring the Power Connector
The control connector also contains a power connector for the MLC 52. Connect the
supplied external 12 VDC, 1 A power supply to this port to power the MLC as shown in
the following diagram.
NOTE: The Extron PS 1210 (included) and other Extron power supplies can be used
with the MLC 52.
Ground (Gnd)
B
+12 VDC input
A
MLC 52
Control
Connector
External
Power Supply
(12 VDC, 1 A Max.)
F E D C B A
Figure 14. Connecting the MLC 52 to the External Power Supply
NOTE: Check the polarity of the power supply before connecting it to the MLC.
ATTENTION:
• Always use a power supply provided by or specified by Extron. Use of an
unauthorized power supply voids all regulatory compliance certification and may
cause damage to the supply and the MLC.
• The power supply must be located within the same vicinity as the Extron AV
processing equipment in an ordinary location, Pollution Degree 2, secured to the
equipment rack within the dedicated closet, podium, or desk.
• The installation must always be in accordance with the applicable provisions of
National Electrical Code ANSI/NFPA 70, article 75 and the Canadian Electrical
Code part 1, section 16. The power supply must not be permanently fixed to
building structure or similar structure.
Configuring the MLC 52 Using IR
The MLC 52 can be programmed via IR by the following methods:
• IR data transfer from an MLC 52 that has been configured
• IR learning from your projector remote control
Ground all devices.
Configuring Using IR Data Transfer (IR Beaming)
You can configure your MLC 52 by transferring button configuration data to it from
another configured MLC 52 via the two IR LEDs on the back panels of the MLCs. With
this method, you replicate (clone) the other MLC configuration on your own unit without
the use of software or cables.
The following transfers are allowed:
• From an RS model to another RS model
• From an IR model to another IR model
• From an IR model to an RS model
MLC 52 MediaLink Controllers • Installation and Configuration15
To transmit configuration data via IR, both the transferring and the receiving MLCs must
Receiving MLC
1
ON
2 3 4
be removed from the wall, electrical box, or furniture, and both must be powered on. The
MLC that is already configured can be powered by an external power supply, or it can
share a power supply with the unit that will be configured.
NOTE: All MLC 52 models use the same IR data transfer procedure.
1. On the MLC from which the configuration will be transferred (the donor
unit), set all configuration switches to Off (down).
2. On the MLC that will receive the data, set switch 2 to On (up) and all the
other switches to Off (down).
1ON234
Transmitting MLC
ON
1
2 3 4
Receiving MLC
3. Position the two units so that the IR Transmit and Receive LEDs of both MLCs are
facing each other, and no more than 6 inches (15 cm) apart.
Data Transfer
Tx
IR OUT
GND
IR IN
GND
+ 12V
1
2 3 4
1
2
ON
3
4
E
ON
Less Than 6”
IR Beaming
Tx
E
4
3
2
1
IR OUT
GND
ON
1
2 3 4
IR IN
GND
+ 12V
1
2 3 4
Transmitting MLC
ON
1
2 3 4
Receiving MLC
Figure 15. Setting Up Transmitting and Receiving Units for Wireless Data
Transfer
The data transfer begins when the receiving unit detects the transmitting unit. The
process takes 15 to 20 seconds to complete, though it may take longer if the
transmitting unit has multiple commands programmed on each button.
MLC 52 MediaLink Controllers • Installation and Configuration16
The front panel buttons act as data transfer progress indicators. While data is being
transferred, the buttons on both the transmitting and the receiving MLCs blink
sequentially in clockwise order, starting with the On button in the upper-left corner
(see figure 16). This cycle repeats until transfer is complete.
ON
VOL
VOL
DISPLAY
OFF
PC
VIDEO
VOLUME
MLC 52
ON
VCR
DVD
DISPLAY
OFF
PC
MLC 52
Figure 16. Order in which the Buttons Blink during Data Transfer
After approximately 17 percent of the data has been transferred, the On button
lights and remains lit to maximum brightness. After another 17 percent has been
transferred, the Off button lights to maximum brightness also and remains lit. After
each increment of 17 percent of the data has been transferred, the next button in
clockwise order lights brightly. When a button becomes permanently lit, the remaining
buttons continue to blink in clockwise rotation, until the transfer process is complete
and all buttons are remain steadily lit.
The following table shows how each percentage of transferred data is indicated by
button lighting.
Percent Complete
MLC 52 Models
Buttons Lit
MLC 52 VC Models
Buttons Lit
Less than 17%OnOn
18% to 36%OffOff
37% to 54%PCPC
55% to 72Video(blank)
73% to 90%
90% to 100%
Vol
Vol
<
>
DVD
VCR
When the transfer is complete, all buttons on each unit remain brightly lit until a button
is pressed on the unit.
NOTE: If the transmission is interrupted (for example, the two units become
separated so that the IR LEDs are no longer in direct line of sight of each other)
and the conditions necessary for transfer are subsequently restored, the two
units restart the transfer process.
MLC 52 MediaLink Controllers • Installation and Configuration17
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