Extron electronic MLC 52 User Manual

MLC 52 Series

MediaLink™ Controllers

68-1079-01 Rev. D

04 07

Precautions

Safety Instructions • English

This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment.

This symbol 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.

Caution

Read Instructions • Read and understand all safety and operating instructions before using the

equipment.

Retain Instructions • The safety instructions should be kept for future reference. Follow Warnings • Follow all warnings and instructions marked on the equipment or in the user

information.

Avoid Attachments • Do not use tools or attachments that are not recommended by the equipment

manufacturer because they may be hazardous.

Consignes de Sécurité • Français

Ce symbole sert à avertir l’utilisateur que la documentation fournie avec le matériel contient des instructions importantes concernant l’exploitation et la maintenance (réparation).

Ce symbole sert à avertir l’utilisateur de la présence dans le boîtier de l’appareil de tensions dangereuses non isolées posant des risques d’électrocution.

Attention

Lire les instructions• Prendre connaissance de toutes les consignes de sécurité et d’exploitation avant

d’utiliser le matériel.

Conserver les instructions• Ranger les consignes de sécurité afin de pouvoir les consulter à l’avenir. Respecter les avertissements • Observer tous les avertissements et consignes marqués sur le matériel ou

présentés dans la documentation utilisateur.

Eviter les pièces de fixation • Ne pas utiliser de pièces de fixation ni d’outils non recommandés par le

fabricant du matériel car cela risquerait de poser certains dangers.

Sicherheitsanleitungen • Deutsch

Dieses Symbol soll dem Benutzer in der im Lieferumfang enthaltenen Dokumentation besonders wichtige Hinweise zur Bedienung und Wartung (Instandhaltung) geben.

Dieses Symbol soll den Benutzer darauf aufmerksam machen, daß im Inneren des Gehäuses dieses Produktes gefährliche Spannungen, die nicht isoliert sind und die einen elektrischen Schock verursachen können, herrschen.

Achtung

Lesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden, sollten Sie alle Sicherheits-

und Bedienungsanleitungen genau durchlesen und verstehen.

Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit des Produktes sollten Sie

aufbewahren, damit Sie im Bedarfsfall darauf zurückgreifen können.

Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungen auf dem Gerät oder in

der Benutzerdokumentation.

Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, die nicht ausdrücklich vom

Hersteller empfohlen wurden, da diese eine Gefahrenquelle darstellen können.

Instrucciones de seguridad • Español

Este símbolo se utiliza para advertir al usuario sobre instrucciones importantes de operación y mantenimiento (o cambio de partes) que se desean destacar en el contenido de la documentación suministrada con los equipos.

Este símbolo se utiliza para advertir al usuario sobre la presencia de elementos con voltaje peligroso sin protección aislante, que puedan encontrarse dentro de la caja o alojamiento del producto, y que puedan representar riesgo de electrocución.

Precaucion

Leer las instrucciones • Leer y analizar todas las instrucciones de operación y seguridad, antes de usar

el equipo.

Conservar las instrucciones • Conservar las instrucciones de seguridad para futura consulta. Obedecer las advertencias • Todas las advertencias e instrucciones marcadas en el equipo o en la

documentación del usuario, deben ser obedecidas.

Evitar el uso de accesorios • No usar herramientas o accesorios que no sean especificamente

recomendados por el fabricante, ya que podrian implicar riesgos.

•

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䯙䇏䇈ᯢк• ֱᄬ䇈ᯢк• 䑩ㅸⷕ἞⪙⫊₩嬵㕏ᶧḦ⡈⭇㚦Ề䑩ɿ

䙉ᅜ䄺 • 䑩ㅸⷕ徶⫉󰶉␂ ⏍䑩ㅸ㉈⊘ᵋ䗅ㆁ㙊⫊₩

䙓ܡ䗑ࡴ

•

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䑩ㅸỀ䑩嬦嫿 ⡈↎⼆枼敆嬼 ⶷䍇夤ㆁ㙊

ᵎ壂Ề䑩嬦󰶉␂⋃⒇㯢㙊㋩劑䗅⴦₸ㅗ弾

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⏍㐎ẝ嬵㕏ɿ

⇡嫿⡈澤Ḧ忀₎⊲斪

Warning

Power sources • This equipment should be operated only from the power source indicated on the product.

This equipment is intended to be used with a main power system with a grounded (neutral) conductor. The third (grounding) pin is a safety feature, do not attempt to bypass or disable it.

Power disconnection • To remove power from the equipment safely, remove all power cords from the rear

of the equipment, or the desktop power module (if detachable), or from the power source receptacle (wall plug).

Power cord protection • Power cords should be routed so that they are not likely to be stepped on or

pinched by items placed upon or against them.

Servicing • Refer all servicing to qualified service personnel. There are no user-serviceable parts inside. To

prevent the risk of shock, do not attempt to service this equipment yourself because opening or removing covers may expose you to dangerous voltage or other hazards.

Slots and openings • If the equipment has slots or holes in the enclosure, these are provided to prevent

overheating of sensitive components inside. These openings must never be blocked by other objects.

Lithium battery • There is a danger of explosion if battery is incorrectly replaced. Replace it only with the

same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions.

Avertissement

Alimentations• Ne faire fonctionner ce matériel qu’avec la source d’alimentation indiquée sur l’appareil.

Ce matériel doit être utilisé avec une alimentation principale comportant un fil de terre (neutre). Le troisième contact (de mise à la terre) constitue un dispositif de sécurité : n’essayez pas de la contourner ni de la désactiver.

Déconnexion de l’alimentation• Pour mettre le matériel hors tension sans danger, déconnectez tous les

cordons d’alimentation de l’arrière de l’appareil ou du module d’alimentation de bureau (s’il est amovible) ou encore de la prise secteur.

Protection du cordon d’alimentation • Acheminer les cordons d’alimentation de manière à ce que

personne ne risque de marcher dessus et à ce qu’ils ne soient pas écrasés ou pincés par des objets.

Réparation-maintenance • Faire exécuter toutes les interventions de réparation-maintenance par un

technicien qualifié. Aucun des éléments internes ne peut être réparé par l’utilisateur. Afin d’éviter tout danger d’électrocution, l’utilisateur ne doit pas essayer de procéder lui-même à ces opérations car l’ouverture ou le retrait des couvercles risquent de l’exposer à de hautes tensions et autres dangers.

Fentes et orifices • Si le boîtier de l’appareil comporte des fentes ou des orifices, ceux-ci servent à

empêcher les composants internes sensibles de surchauffer. Ces ouvertures ne doivent jamais être bloquées par des objets.

Lithium Batterie • Il a danger d'explosion s'll y a remplacment incorrect de la batterie. Remplacer

uniquement avec une batterie du meme type ou d'un ype equivalent recommande par le constructeur. Mettre au reut les batteries usagees conformement aux instructions du fabricant.

Vorsicht

Stromquellen • Dieses Gerät sollte nur über die auf dem Produkt angegebene Stromquelle betrieben

werden. Dieses Gerät wurde für eine Verwendung mit einer Hauptstromleitung mit einem geerdeten (neutralen) Leiter konzipiert. Der dritte Kontakt ist für einen Erdanschluß, und stellt eine Sicherheitsfunktion dar. Diese sollte nicht umgangen oder außer Betrieb gesetzt werden.

Stromunterbrechung • Um das Gerät auf sichere Weise vom Netz zu trennen, sollten Sie alle Netzkabel

aus der Rückseite des Gerätes, aus der externen Stomversorgung (falls dies möglich ist) oder aus der Wandsteckdose ziehen.

Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nicht im Weg liegen und

niemand darauf treten kann oder Objekte darauf- oder unmittelbar dagegengestellt werden können.

Wartung • Alle Wartungsmaßnahmen sollten nur von qualifiziertem Servicepersonal durchgeführt

werden. Die internen Komponenten des Gerätes sind wartungsfrei. Zur Vermeidung eines elektrischen Schocks versuchen Sie in keinem Fall, dieses Gerät selbst öffnen, da beim Entfernen der Abdeckungen die Gefahr eines elektrischen Schlags und/oder andere Gefahren bestehen.

Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuse aufweist, dienen diese zur

Vermeidung einer Überhitzung der empfindlichen Teile im Inneren. Diese Öffnungen dürfen niemals von anderen Objekten blockiert werden.

Litium-Batterie • Explosionsgefahr, falls die Batterie nicht richtig ersetzt wird. Ersetzen Sie verbrauchte

Batterien nur durch den gleichen oder einen vergleichbaren Batterietyp, der auch vom Hersteller empfohlen wird. Entsorgen Sie verbrauchte Batterien bitte gemäß den Herstelleranweisungen.

Advertencia

Alimentación eléctrica • Este equipo debe conectarse únicamente a la fuente/tipo de alimentación eléctrica

indicada en el mismo. La alimentación eléctrica de este equipo debe provenir de un sistema de distribución general con conductor neutro a tierra. La tercera pata (puesta a tierra) es una medida de seguridad, no puentearia ni eliminaria.

Desconexión de alimentación eléctrica • Para desconectar con seguridad la acometida de alimentación

eléctrica al equipo, desenchufar todos los cables de alimentación en el panel trasero del equipo, o desenchufar el módulo de alimentación (si fuera independiente), o desenchufar el cable del receptáculo de la pared.

Protección del cables de alimentación • Los cables de alimentación eléctrica se deben instalar en lugares

donde no sean pisados ni apretados por objetos que se puedan apoyar sobre ellos.

Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personal calificado. En el interior

no hay partes a las que el usuario deba acceder. Para evitar riesgo de electrocución, no intentar personalmente la reparación/mantenimiento de este equipo, ya que al abrir o extraer las tapas puede quedar expuesto a voltajes peligrosos u otros riesgos.

Ranuras y aberturas • Si el equipo posee ranuras o orificios en su caja/alojamiento, es para evitar el

sobrecalientamiento de componentes internos sensibles. Estas aberturas nunca se deben obstruir con otros objetos.

Batería de litio • Existe riesgo de explosión si esta batería se coloca en la posición incorrecta. Cambiar esta

batería únicamente con el mismo tipo (o su equivalente) recomendado por el fabricante. Desachar las baterías usadas siguiendo las instrucciones del fabricante.

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䩭ᵊ㚢一澠♱一澡㕰

• ᵻ⫊₩♱ḏ嫿⡈㈕㋊䑶㷑澤嬸㈕㋊ㆁ㙊嫿

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䑶㷑一ɿ

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⡈⍏ㅗ㞍暣䑶㷑䗅䑶㷑一澤

怩㯢㙊䑩ㅸ⌰Ḧ㘵㊣䗅昷ḷɿ

敳㪣㙻⃆㒐だ₄ḷ弈䀮ɿ

ᵏ⋃⫷㋩劑䗅䘹⍍ㅗ 䘹弒⛌⌸䗅䑶㮡ɿ

Table of Contents

Chapter 1 • Introduction ....................................................................................................... 1-1

About the MLC 52 Series ................................................................................................. 1-2

Features and Options........................................................................................................ 1-2

Standard features .............................................................................................................. 1-2

Options and accessories ..................................................................................................... 1-3

MLC 52 Application Examples ...................................................................................... 1-4

Chapter 2 • Installation .......................................................................................................... 2-1

Installation Overview ....................................................................................................... 2-2

UL Requirements ................................................................................................................. 2-3

Installation Procedures .................................................................................................... 2-3

Preparing the site and installing the wall box ................................................................. 2-3

Replacing the faceplate ..................................................................................................... 2-4

Replacing button labels ..................................................................................................... 2-5

Mounting an electrical box ............................................................................................... 2-6

Rear panel and cable connections .................................................................................... 2-8

Wiring the control connector ................................................................................... 2-10

Wiring for IR control ........................................................................................... 2-11

Wiring for RS-232 control (RS models only) ....................................................... 2-12

Wiring an IR Link ................................................................................................. 2-12

Wiring an IRL 20 .................................................................................................. 2-14

Wiring the power connector .............................................................................. 2-15

Wiring the VC port .................................................................................................... 2-15

Mounting the MLC 52 ..................................................................................................... 2-16

Mounting the MLC to an electrical box or mounting bracket ............................... 2-16

Mounting the MLC to a wall or furniture ............................................................... 2-17

Chapter 3 • Operation ............................................................................................................. 3-1

Display Device Control..................................................................................................... 3-2

Front Panel Features and Operation ......................................................................... 3-2

Buttons on the front panel ............................................................................................... 3-2

Switch modes ..................................................................................................................... 3-2

Front panel components ................................................................................................... 3-3

Configuring the MLC 52 Using IR................................................................................ 3-5

Configuring using IR data transfer ................................................................................... 3-5

Configuring using IR Learning .......................................................................................... 3-7

Removing commands from a button ................................................................................ 3-9

Setting up button macros ................................................................................................. 3-9

Configuring a single button for input source selection ................................................ 3-10

Using the MLC 52 VC Models with the MPA Series Power Amplifiers ... 3-11

Requirements for the MLC 52 with volume control knob .............................................3-11

Wiring and connections for the MLC 52 VC models ...................................................... 3-12

Configuring the MLC 52 IR and MLC 52 RS Vol buttons ................................................ 3-12

MLC 52 Series MediaLink Controllers • Table of Contents

Table of Contents, cont’d

Powering the Display Device On and Off ............................................................. 3-12

Powering on ..................................................................................................................... 3-12

Powering off .................................................................................................................... 3-13

Selecting Inputs ................................................................................................................. 3-13

Operating the MLC 52 Using IR Remote Control............................................... 3-14

Buttons on the IR 452 remote control ............................................................................ 3-15

Resetting ............................................................................................................................... 3-16

Locking the Front Panel (Executive Mode) .......................................................... 3-16

Chapter 4 • Special Applications ..................................................................................... 4-1

Application 1: Using Multiple Sources with an MLC 52 ................................. 4-2

Programming buttons for an IR controlled system .......................................................... 4-3

Projector remote control type A (application 1) ....................................................... 4-3

Projector remote control type B (application 1) ....................................................... 4-6

Programming buttons for multiple inputs on an RS-232 controlled system .................. 4-7

Application 2: Projector Requiring a Power Off Confirmation .................. 4-7

Configuring the MLC 52 for a power-off confirmation................................................... 4-8

Application 3: Controlling Projectors That Have Multi-coded

IR Functionality .................................................................................................................... 4-9

Configuring the MLC 52 for multi-coded IR functionality .............................................. 4-9

Projector remote control type A (application 3) ....................................................... 4-9

Programming RGB inputs — projector remote control type A ........................... 4-9

Programming video inputs — projector remote control type A ....................... 4-10

Issuing input selection commands learned from a type A remote control ...... 4-12

Programming VC models — projector remote control type A ......................... 4-12

Projector remote control type B (application 3) ..................................................... 4-13

Programming RGB inputs — projector remote control type B ......................... 4-13

Programming video inputs — projector remote control type B ....................... 4-14

Issuing input selection commands learned from remote control type B ......... 4-15

Programming VC models — Projector remote control type B ......................... 4-15

Chapter 5 • Serial Communication ................................................................................. 5-1

Using the MLC 52 Configuration Program ............................................................. 5-2

Installing the software ...................................................................................................... 5-3

Starting the configuration program ................................................................................. 5-4

Loading Extron drivers ...................................................................................................... 5-5

Loading the serial (RS-232) drivers ............................................................................. 5-5

Loading the IR drivers ................................................................................................. 5-5

Viewing the IR driver package version ...................................................................... 5-7

Changing the location of the IR drivers ..................................................................... 5-8

Key to file names ............................................................................................................... 5-9

Configuring using the MLC 52 Configuration Wizard ..................................................... 5-9

Creating a new configuration using the wizard ..................................................... 5-11

Opening an existing configuration using the wizard ............................................. 5-17

Configuring using the Windows-based configuration program................................... 5-19

ii MLC 52 Series MediaLink Controllers • Table of Contents

Overview of the configuration procedure .............................................................. 5-20

Opening the MLC 52 Configuration Program screen .............................................. 5-20

Displaying the Help program ................................................................................... 5-23

Saving and restoring a configuration ...................................................................... 5-23

Saving a configuration ........................................................................................ 5-23

Restoring a configuration ................................................................................... 5-24

Overview of the MLC 52 configuration program main screen ............................... 5-25

Menu bar ............................................................................................................. 5-26

Front panel representations ............................................................................... 5-28

Button Settings area ............................................................................................ 5-29

Display settings tabs ............................................................................................ 5-29

Button Operations area ...................................................................................... 5-29

Adding a driver ......................................................................................................... 5-30

Removing a driver .....................................................................................................5-32

Removing an IR driver ......................................................................................... 5-32

Removing a serial driver ...................................................................................... 5-32

Assigning functions to buttons ................................................................................ 5-32

Assigning user-defined functions to buttons .......................................................... 5-34

Removing a function from a button ........................................................................ 5-35

Setting up button modes and labels ........................................................................ 5-35

Factory defaults ................................................................................................... 5-37

Setting the button modes ................................................................................... 5-38

Entering display device power settings ................................................................... 5-38

Entering display device communications port settings .......................................... 5-39

Programming the MLC 52 for control by the IR 452 Remote ........................................ 5-40

Performing IR Learning via software .............................................................................. 5-40

Playing an IR command ................................................................................................... 5-42

Using emulation mode .................................................................................................... 5-43

Selecting the starting screen ...........................................................................................5-46

Resetting .......................................................................................................................... 5-47

Uploading firmware ........................................................................................................ 5-48

Downloading the firmware from the Web ............................................................. 5-48

Installing the Firmware Loader ................................................................................ 5-49

Updating the firmware ............................................................................................. 5-49

Using Simple Instruction Set (SIS™) commands................................................. 5-51

Host-to-MLC communications ......................................................................................... 5-51

MLC-initiated messages ............................................................................................ 5-51

Error responses .......................................................................................................... 5-51

Using the command/response tables ....................................................................... 5-51

Symbol definitions .................................................................................................... 5-52

Command/response table for SIS commands ................................................................. 5-53

Command/response table for advanced instructions

(for the MLC 52 configuration program) ....................................................................... 5-54

iiiMLC 52 Series MediaLink Controllers • Table of Contents

Table of Contents, cont’d

Appendix A • Specifications, Part Numbers, and Accessories .................... A-1

Specifications....................................................................................................................... A-2

Part Numbers and Accessories ......................................................................................... A-3

Included parts ................................................................................................................... A-3

Optional accessories ......................................................................................................... A-4

Cables ................................................................................................................................ A-4

Appendix B • Templates ......................................................................................................... B-1

MLC 52 IR and MLC 52 RS Template ................................................................ B-2

MLC 52 IR VC and MLC 52 RS VC Template .............................................................B-3

All trademarks mentioned in this manual are the properties of their respective owners.

iv MLC 52 Series MediaLink Controllers • Table of Contents

68-1079-01 Rev. D

04 07

MLC 52 Series

Chapter One

Introduction

About the MLC 52 Series

Features and Options

MLC 52 Application Examples

Introduction

About the MLC 52 Series

The Extron MediaLink™ Controller 52 (MLC 52) Series provide RS-232 and/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 audiovisual 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 for a display device’s power, input selection, volume, and more. The MLC 52 can be configured using three different methods:

• Infrared (IR) learning

• IR data transfer (“beaming”) from another MLC 52

• Using Extron device control drivers with the Windows

Features and Options

The MLC 52 is available in the following models:

MLC 52 IR — 1-gang size; controls the display device by IR. MLC 52 RS — 1-gang size; controls the display device by either IR or RS-232. MLC 52 IR VC — 2-gang size; controls the display device via IR. This model has a

MLC 52 RS VC — 2-gang size; controls the display device by either IR or RS-232.

-based configuration

software program

volume control knob to control an amplifier such as the Extron MPA Mini Power Amplifier (purchased separately).

This model has a volume control knob to control an amplifier such as the Extron MPA Mini Power Amplifier (purchased separately).

The terms “MLC,” “MLC 52,” and “controller” are used interchangeably in this manual to refer to all four models of the MediaLink controller unit, regardless of which faceplate is attached to it. The cabling, operation, and setup are identical for all models; the models differ only in how they are controlled.

Standard features

IR and RS-232 ports for universal display device control — The MLC 52 has a

Discrete On and Off display device power controls — These controls simplify

Configurable, backlit buttons — The configurable buttons can be set up to control

Macro and toggle button modes — Each button on the MLC can be programmed

MLC 52 Series MediaLink Controllers • Introduction1-2

dedicated port for communicating with virtually any projector or display via infrared (IR) signal. The MLC 52 RS models also have ports for unidirectional RS-232 wired serial control. Projector control drivers can be downloaded from the Extron Web site or created using the Windows-based configuration program.

system operations and eliminate the need for a device’s handheld remote 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 for presenters in low-light environments.

to send out up to four IR or serial commands. You can set each button either to issue all its commands with one press (macro mode) or to issue one of its commands 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 #70-335-01) can be used to connect the MLC 52 to the PC’s RS-232 port.

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 display

device’s remote control without the need for software.

• IR data transfer — Duplicates complete configuration information from

one MLC 52 model to another without cables or software.

• Windows-based configuration software — Combined with one of the

many IR or RS-232 drivers that are provided with the controller on CD or available on the Extron Web site, Extron’s MLC 52 Configuration Program software provides fast and simple setup.

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 if the MLC 52 is installed in an unsecured environment where universal access is not desirable.

High-impact mounting faceplates — The standard MLC 52 models are provided

with two one-gang sized high-impact plastic faceplates (one black and one white), that are durable enough for demanding environments.

The MLC 52 VC models include two two-gang sized high impact plastic faceplates (one black and one white).

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 wide variety of locations, including walls, lecterns, and tables.

Volume control (VC) faceplate — The two-gang sized MLC 52 IR VC and the

MLC 52 RS VC each have a volume control knob in addition to the six control buttons. To use this knob, you must connect the MLC 52 to a power amplifier (purchased separately), such as the Extron MPA Series Mini Power Amplifier, to which you also connect the projector or display (see the application diagram on page 1-4). The volume control knob adjusts the volume on the amplifier. This option frees up the two volume control buttons on the MLC to be used or reconfigured for other display device functions.

Options and accessories

MPA Series Mini Power Amplifier — Connect an MPA 122 (part #60-668-01) or an

MPA 181T (part #60-747-01) 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’s volume knob to control the volume of the speakers via the MPA.

Remote control — The optional IR 452 Remote Control and optional IR signal

repeater provide infrared remote control of the MLC unit from up to 30 feet away.

The Extron P/S 100 and other Extron power supplies may be used with the MLC 52.

1-3MLC 52 Series MediaLink Controllers • Introduction

Introduction, cont’d

MLC 52 Application Examples

DVD

Composite Audio RCA

Projector w/ Internal Speakers

VGA w / Audio Cable

IR or RS-232 Control

DISP LAY

VOL

OFF

VIDEO

MLC 52

Extron MLC 52

Basic MediaLink Controller

VCR

Composite Audio RCA

Application diagram for a standard MLC 52 (1-gang size)

VGA w /

DVD

S-video Audio RCA

Audio Cable

REMO

INPU

10V VOL/MUTE

POWER

Switched Audio Output

Extron MPA 122

Mini Power Amplifier

MPA 122

UTS

OUTP

Ohms

4/8

IR or RS-232 Control

Projector

Volume Control

Extron SPC 62

Ceiling Speakers (in parallel)

UME

VOL

LAY

DISP

OFF

DVD

VCR

MLC 52

Extron MLC 52 RS VC

Basic MediaLink Controller with Volume Control

MLC 52 Series MediaLink Controllers • Introduction1-4

MLC 52 Series

Chapter Two

Installation

Installation Overview

UL Requirements

Installation Procedures

Installation

Installation Overview

To install and set up the MLC, follow these steps:

CAUTION

If applicable, prepare the installation site: cut a hole in the wall, install the

electrical box or mounting bracket (“mud ring”), and prepare the cables. Instructions are included in this manual and/or with the optional faceplate, mounting device, or wall box.

See “Preparing the site and installing the wall box,” later in this chapter.

Make and/or install button labels as desired. See “Replacing button labels,”

later in this chapter.

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,” later in this chapter.

Attach cables to the rear of the MLC and to the display device; MPA Mini

Power Amplifier (if applicable); and optional IR Link, IR Emitters, and/or IRL 20.

Installation and service must be performed by authorized personnel only. UL listed electrical boxes are recommended. See “UL Requirements,” on the next page.

Metal versions of the one-gang and VC faceplates are available as options.

Connect power cords and turn on all the devices, including the MLC.

Configure the controller by using one of the following methods:

• IR learning (See “Configuring using IR learning,” in chapter 3, “Operations.”)

• IR data transfer (cloning) (See “Configuring using data transfer,” in chapter 3, “Operations.”)

• Windows MLC 52Configuration Program” in chapter 5, “Serial Communication,” for detailed information on the configuration software.)

Test the system: press the MLC’s buttons, watch the display, and listen to the

audio output to determine whether the output devices are responding correctly (powering on/off, switching inputs, etc.). If not, ensure that all devices are plugged in and receiving power. Check the cabling, and make adjustments as needed.

Mount the MLC to the wall or furniture.

a. Disconnect the MLC’s power supply at the power source end (not at the

MLC end).

b. Disconnect the other devices’ power. c. Secure the faceplate onto a UL-approved electrical wall box, a mounting

bracket, a wall, or furniture. See “Mounting the MLC 52,” later in this chapter.

d. Restore power to the MLC and to the connected devices.

-based configuration software program (See “Using the

2-2

MLC 52 Series MediaLink Controllers • Installation

UL Requirements

The Underwriters Laboratories (UL) requirements listed below pertain to the installation of the MLC into a wall or furniture.

1. Elevated operating ambient temperature — If the equipment is installed in a

closed or multiunit rack assembly, the operating ambient temperature of the rack environment may be greater than room ambient. Therefore, consider installing the equipment in an environment compatible with the maximum ambient temperature (Tma) specified by the manufacturer. For the MLC 52, the Tma is 122 °F (50 °C).

2. Reduced air flow — Installation of the equipment in a rack should be such

that the amount of air flow required for safe operation of the equipment is not compromised.

Mechanical loading — Mounting of the equipment in the rack should be such

that a hazardous condition is not achieved due to uneven mechanical loading.

4. Circuit overloading — Consideration should be given to the connection of the

equipment to the supply circuit and the effect that overloading of the circuits might have on overcurrent protection and supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.

5. Reliable earthing (grounding) — Reliable earthing of rack-mounted

equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit (e. g., use of power strips).

Installation Procedures

The MLC 52 can be installed into a wall or furniture. Follow the instructions appropriate to the mounting option you have selected.

Preparing the site and installing the wall box

The installation of the MLC 52 must conform to national and local electrical codes and to the equipment’s size requirements.

Installation using a UL listed wall box is recommended for most mounting options, but mounting brackets can be used instead. To mount the controller using an electrical box and/or a mounting bracket, use one of the rough-in templates provided in appendix B, “Dimensions and Templates,” as a guide to measure and mark the hole in the wall or furniture through which the MLC will be mounted. The templates provide measurements for installing the control panel with either an electrical box or a mounting bracket.

The templates are not to scale and are provided for reference only.

• The MLC 52 models include a one-gang plastic faceplate, which can be installed on a standard one-gang electrical wall box that is at least 1.75" deep. Mud rings are also included.

• The MLC 52 VC models have two-gang plastic faceplates, which can be installed in a standard two-gang wall box. Mud rings are also included.

• Also available are optional faceplates that accept the MLC 52 and can be installed into one-gang or two-gang electrical wall boxes or directly mounted into furniture. Templates for these optional faceplates are included with each faceplate.

2-3MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

To prepare the site,

1. Choose a location that will allow cable runs without interference. Allow

enough depth for both the wall box and the cables. You may need to install the cables into the wall or furniture before installing the controller. If using an electrical box to wall mount the controller, locate a stud to which the box will be attached.

2. Use the appropriate template and faceplate dimensions in appendix B,

“Dimensions and Templates,” as a guide to measure and mark the area to cut out. If you are using a mounting bracket, refer to the template that came with the bracket.

3. Cut out the opening in the wall or furniture.

Replacing the faceplate

You can replace the provided plastic faceplate with an optional metal one — the MLM 52 1GWP one-gang metal faceplate (part #70-528-02 or -03) or the MLM 52 VC two-gang metal faceplate (part # 70-538-02 or -03), both of which are available in black or white. You may also wish to replace your plastic faceplate with one of a different color (two plastic faceplates are provided, one black and one white).

To replace the faceplate,

1. Hold the MLC face down. Use an Extron Tweeker or a small Philips

screwdriver to remove the three attachment screws (marked diagram at right) from the back of the MLC, and keep them to replace later.

CAUTION

2. Lift the MLC off the faceplate.

3. Place the MLC onto the new faceplate, aligning the MLC’s buttons with the

openings in the new faceplate and the three screw holes in the MLC with the faceplate standoffs.

4. Replace the three screws removed in step 1, and manually tighten them.

in the

If installing a metal faceplate, do not remove the screws from the front of the faceplate.

Refer to the MLM 52 1GWP and/or the MLM 52 VC user’s guides for further information on faceplates for the MLC 52.

234

IR OUT

GND

IR IN

GND

+ 12V

Screws to remove from the MLC faceplate

MLC 52 Series MediaLink Controllers • Installation2-4

Installing the MLC onto a new faceplate (bottom view)

Replacing button labels

The button caps are prelabeled for your convenience by default. However, you can change them with the included button labels.

The button assembly consists of a clear lens cap, the button label, and a white diffuser. (See the diagram below.) Remove the button assembly from the MLC 52 as follows:

1. Remove the button assembly by inserting a small,

flat-bladed screwdriver, such as an Extron Tweeker, between the button’s base and the diffuser to gently pry the button assembly off the button plunger, as shown in the drawing at right.

2. Locate the small corner notch on the lens cap, and

slide the screwdriver between the lens cap and the diffuser. (See

3. Using a rotating motion of the screwdriver,

carefully pry the two pieces apart. (See illustration below.)

in the illustration below.)

MLC 52

Standoff

in the

Faceplate

Pry the button from the base.

Clear Lens

Notch

Separate the twopiece button here at the corner.

Replacing a button label

TEXT

Pry the two pieces apart.

Plunger

Base

Diffuser

Button Label

2-5MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

4. Lift out the transparent square label that you want to replace, being careful

not to damage the circuits beneath it. You may need to use the small screwdriver to gently pry the label out.

5. Detach one of the preprinted labels or one of the blank labels from the label

sheets included with the MLC 52. Remove the label from the backing and, if applicable, peel the protective film from the front of the label.

6. Insert the new label into the clear button cap, align the white backing plate

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.

Mounting an electrical box

If you want to install the MLC 52 in an electrical box (in a wall or in furniture),

1. Refer to the appropriate template diagram in appendix B, “Dimensions and

Templates,” to find out the dimensions of the opening required for the size of the wall box that you are using. If you are using a mud ring with the wall box, refer to the templates provided with the bracket.

2. Using a ruler or tape measure and a soft pencil, draw guidelines on the

installation surface (wall or furniture) in the desired orientation and location where the opening for the bracket or wall box will be cut.

CAUTION

3. Cut out the wall or furniture material inside the marked area.

4. Check the opening size by inserting the wall box or mounting bracket into the

opening. The equipment should fit easily into the opening. Enlarge or smooth the edges of the opening if needed.

5. Feed cables through the wall box punch-out holes, and secure them with cable

clamps to provide strain relief.

6. Exposed cable shields (braids or foil) are potential sources of short circuits.

Trim back and/or insulate shields with heat shrink.

7. Insert the wall box into the opening, and attach it to the wall stud or furniture

with nails or screws, leaving the front edge flush with the outer wall or furniture surface. The following illustration applies to all sizes of wall boxes.

If you want to create customized labels, you can use a label maker, such as the

Brother labels. Cut the labels so that they are square and measure ½ inch on each edge.

P-touch®, and clear label material to print text to place on the blank

The template diagrams in this guide are not to scale. Do not trace them or use them as patterns on the installation surface. Use these diagrams only for reference to obtain the dimensions of the hole that needs to be cut. Use a ruler to measure and draw the cutting guidelines.

To prevent short circuits, you can cut back the outer foil shield to the point where the cable exits the cable clamp. Both braided and foil shields should be connected to an equipment ground at the other end of the cable.

MLC 52 Series MediaLink Controllers • Installation2-6

Wall Stud

Installation Cable

Cable Clamp

Screws or Nails

Wall opening flush with edge of box

Attaching a wall box to a wall stud

• If you are attaching the wall box to wood, use four #8 or #10 screws or

10-penny nails. A minimum of ½ inch (1.3 cm) of screw threads must penetrate the wood.

• If you are attaching the wall box to metal studs or furniture, use four #8 or

#10 self-tapping sheet metal screws or machine bolts with matching nuts.

• If you are using a mounting bracket (mud ring) with the wall box, follow

the directions included with the bracket to attach the clips that fasten the bracket to the wall or furniture.

8. If desired, replace the faceplate and/or button labels on the MLC. (See

“Replacing the Faceplate and Button Labels,” earlier in this chapter.)

9. Cable and test the MLC before fastening it into the wall box, mounting

bracket, or furniture.

2-7MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

Rear panel and cable connections

The following diagrams show the locations of the connector, switches, LEDs, and IR sensors on the back of the MLC 52 with standard and VC faceplates.

MLC 52 rear view

GND

IR OUT

GND

234

GND

+ 12V

IR IN

VOL/ MUTE

+ 10V

2 3 4

IR IN

GND

+ 12V

MLC 52 VC rear view

MLC 52 Series MediaLink Controllers • Installation2-8

IR 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. The IR remote control 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. The IR learning procedure is discussed in the “Configuring using IR learning” section of chapter 3, “Operations.”

You can also perform IR learning via the Windows-based configuration software. See “Performing IR learning via software,” in chapter 5, “Serial Communication.”

Enable Macro LED — The LED located immediately above 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 macros,” in chapter 3, “Operations.”)

Configuration switches — When set to “on,” these DIP switches place the

MLC in IR learning mode or data transfer mode, or disable IR repeats.

• Switch 1: Enables IR learning.

• Switch 2: Enables data transfer, such as cloning the MLC’s configuration

onto another MLC 52 (see “Configuring using IR data transfer,” in chapter 3, “Operations”).

• Switch 3: Disables IR repeats during playback. For most applications,

this switch is placed in the off position.

Switch 4 is not used.

Volume control (VC faceplate only) connector — Connect this volume

control connector to an amplifier such as the Extron MPA 122 or MPA 181T to enable the volume control knob on the MLC 52 to raise and lower the volume on the display device via the amplifier.

Display control and power connector — This 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,” in the next section, for information on how to connect supported devices to the MLC.)

The RS-232 projector control port is present on this connector but not functional on the IR models. This port is functional only on the RS models.

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 for IR learning,” in chapter 3, “Operation,” for details.

2-9MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

Wiring the control connector

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 pin assignments of the MLC’s control connector that are covered in detail on the following pages.

F E D C B A

Pinout guide for the MLC 52 display/source control connector

The ports in this connector, from left to right, perform the following functions:

F (Tx) — Transmits the RS-232 signal for projector control.

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 and/or RS-232 projector control C (IR in) — Used for connecting an optional IR Link or IRL 20, so that an IR remote

can control the MLC.

B (GND) — Ground for the +12 VDC power A (+12 V) — Power input for the product (12 VDC)

RS-232 Tx (RS models only) IR out

IR in

12 V DC in

Although this port is present on both the IR and the RS models, it is functional only on the RS models.

The two-gang MLC 52 IR VC and MLC 52 RS VC have the same control ports as the one-gang models.

MLC 52 Series MediaLink Controllers • Installation2-10

Wiring for IR control

If you intend to control display and/or input devices via infrared (IR) commands from the MLC, you can connect Extron IR emitters or an IR Broadcaster 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.

Emitter

Connect up to 2 IR Emitters (max.) (#70-283-01).

MLC 52 control connector

Modulated IR

White striped wire only

Ground

100 feet (30.5 m) maximum

Place the head of each IR Emitter over or directly adjacent to the

F E D C B A

For the IR Emitter only

controlled device’s IR receiver.

Demodulated IR

Ground

+12VDC output

MLC 52 control connector

F E D C B A

For the IR Broadcaster with emitter port

Demodulated IR

Ground

MLC 52 control connector

F E D C B A

For a wired projector remote port

Wiring the control connector for IR

To IR Broadcaster with Emitter port (#60-272-02)

To the projector's wired remote port

(Connector type and pin configurations may vary depending on the projector model.)

2-11MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

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 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. Use the illustration below as a guide to wiring the connector. Wiring varies depending on the device model. In most cases, only the transmit (Tx) and ground connections are needed.

Guides for connecting and controlling specific models of devices are available on the Extron Web site.

F E D C B A

RS-232 Tx (RS models only) IR out

IR in

12 V DC in

Wiring for RS-232 control (RS models only)

Extron recommends using the UC 50' universal projector control cable for this connection. One end of the cable is terminated with a female 9-pin D connector, and the other end is unterminated. The UC 50' cable pin assignments are as shown in the following illustration.

Refer to the display device user’s manual for the device’s pin assignments in order to determine which of the cable’s wires to connect to the MLC’s RS-232 pins.

Black

Grey

Purple

To the

MLC 52

Blue Green Ye l l o w

Orange

Red

Brown

UC 50', 100', and 200' cable color codes

Wiring an IR Link

An optional IR Link or IRL 20 can be connected to the IR In pole of the control connector to enable the MLC to receive IR signals from the IR 452.

To wire the IR Link for use with your MLC,

9 8

7 6 5 4 3 2 1

Pin # Color

Shield

UC Cable

Connector Shell

Only one IR Link or one IRL 20 can be attached to the MLC 52 at one time.

To the

display

device

1. Prepare the site where the IR Link will be installed and install a wall box,

following the directions in the IR Link User’s Manual, provided with your IR Link equipment.

2. Cut the required length of Extron CTL (Comm-Link) cable to go between the

MLC 52 and the IR Link. The power cable length should not exceed 150' (45.7 m).

MLC 52 Series MediaLink Controllers • Installation2-12

3. Attach a 3.5 mm, 5-pole captive screw connector to one end of the cable and a

6-pole captive screw connector to the other end. Only three wires are required:

•A (MLC) to A (IR Link)

• B (MLC) to B (IR Link)

• C (MLC) to D (IR Link)

Connect the wires as shown in the illustration below. Connectors are included with the IR Link, but the cable must be purchased separately.

4. Plug the 5-pole connector into one of the IR Link’s communications

connectors.

5. Plug the 6-pole connector into the rear panel control port of the MLC 52.

IR in

F E D C B A

MLC 52 Control Port

Modulated IR

Ground ( )

+12VDC

D B A

A B C D E

VCR

DVD

VCR

VOL

FRONT PANEL

DVD

SYSTEM REMOTE

VIDEO

IR 452

IR 452 Remote

CHANNEL

TV/VCR

Control

IR Link

Wiring and using the IR Link for IR remote control

Do not connect more than one IR Link, either in parallel or in series.

30’ (12 m) max.

Total distance from MLC is 150' (45.7 m) max.

MLC 52 or MLC 52 VC

IR Link

IR Signal Repeater

DISPLAY

VOL

SIGNAL

OFF

VIDEO

MLC 52

IR LINK

2-13MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

Wiring an IRL 20

The Extron IRL 20 is a hardwired IR signal receiver that can be used with the MLC 52 and the IR 452 remote control. The IRL 20 receives a signal via its front panel (or an IR sensor) from the IR 452 remote control, and outputs a modulated IR signal via an IR emitter or an IR Broadcaster.

IR OUT

GND

IR IN

GND

+ 12V

Modulated IR

C B A

GND

+12 V

D B A

+12V

GND

SCP

+12V

ModIR

GND

IR SNSR

SCP

GND

ModIR

SIG

+5V

Control Connector for MLC 52 Series (Rear Panel)

External Power Supply (12 VDC, 1A max.)

+12 VDC

Ground ( )

A B

IRL 20

Wiring an IRL 20

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 go between the MLC 52 and the IRL 20. See appendix A, “Specifications, Part Numbers, and Accessories,” for cable part numbers.

The maximum total distance between an Extron controller and the IRL 20 is 150' (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.

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 (IR Link)

• B (MLC) to B (IR Link)

• C (MLC) to D (IR Link)

Do not connect more than one IRL 20 or IR Link (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’s

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.

+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 Series MediaLink Controllers • Installation2-14

Wiring the power connector

The control connector also contains a power connector for the MLC 52. Connect the supplied external 12 VDC power supply to this port to power the MLC as shown in the following diagram.

The Extron P/S 100 and other Extron power supplies can be used with the MLC 52.

Ground ( )

+12 VDC input

External

MLC 52 Control Connector

Power Supply (12 VDC, 1A max.)

F E D C B A

Ground all devices.

Connecting the MLC 52 to the external power supply

Check the power supply’s polarity before connecting it to the MLC.

Wiring the VC port

If you have an MLC 52 IR VC or an MLC 52 RS VC controller, it can be connected to an optional amplifier, such as the Extron MPA Mini Power Amplifier. To set up this configuration, wire the volume control potentiometer to the amplifier as shown in the following diagram.

VOL/ MUTE

10V

VOL

10V

MLC 52 VC Potentiometer Rear Panel

1 2 3

10V

VOL

MPA 122

or MPA 181T Remote Port

Wiring the VC potentiometer to the MPA remote volume control port

Set up the volume control, following the instructions in the amplifier’s user manual.

2-15MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

Mounting the MLC 52

Once the system has been cabled, configured, and tested, the MLC can be installed in the wall or furniture.

Mounting the MLC to an electrical box or mounting bracket

You can mount the MLC 52 in an electrical box or a mounting bracket, as follows:

1. If you want to install a different faceplate, attach the MLC to the desired

faceplate using the provided screws. (See “Replacing the faceplate,” earlier in this chapter.)

2. Connect all cables to the MLC, and disconnect power at the source.

3. Insert the MLC into the wall or furniture.

4. Secure the MLC to the wall box or mounting bracket with the provided

machine screws (as shown in the following illustrations), or attach it directly to the furniture with wood or metal screws.

If the MLC (and the IR Link, if applicable) is not mounted to a grounded metal wall box,

• Ground each faceplate directly to an earth ground, or

• Tie each faceplate to its circuit board and power supply via a ground pin on one of the connectors.

not tie a product’s faceplate to both a separate earth ground and the circuit

ground (via a connector pin). If you tie a product to two different ground sources, you may introduce ground loops or other grounding-related problems into the system.

DISPLAY

OFF

Wall opening is flush with edge of box.

VOL

VIDEO

VOL

MLC 52

Mounting the MLC 52 in a wall box

MLC 52 Series MediaLink Controllers • Installation2-16

Wall

Extron

Wall Mounting Bracket

DISPLAY

OFF

VOL

VIDEO

VOL

MLC 52

Mounting the MLC 52 to a mounting bracket (mud ring)

Mounting the MLC to a wall or furniture

1. With all cables attached to the MLC and power disconnected at the source,

insert the MLC into the wall or furniture.

2. Fasten the MLC and faceplate directly to the furniture or wall using wood

screws.

If the MLC (and the IR Link, if applicable) is not mounted to a grounded metal wall box,

• Ground each faceplate directly to an earth ground, or

• Tie each faceplate to its circuit board and power supply via a ground pin on one of the connectors.

not tie a product’s faceplate to both a separate earth ground and the circuit ground (via a connector pin). If you tie a product to two different ground sources, you may introduce ground loops or other grounding-related problems into the system.

2-17MLC 52 Series MediaLink Controllers • Installation

Installation, cont’d

MLC 52 Series MediaLink Controllers • Installation2-18

MLC 52 Series

Chapter Three

Operation

Display Device Control

Front Panel Features and Operation

Configuring the MLC 52 Using IR

Using the MLC 52 VC Models with the MPA Series Power Amplifiers

Powering the Display Device On and Off

Selecting Inputs

Operating the MLC 52 Using IR Remote Control

Resetting

Locking the Front Panel (Executive Mode)

Operation

Display Device Control

The MLC 52 IR models can control a projector or other display device by using infrared (IR) signals. The RS models can control a display device using IR or RS-232. The MLC must be configured for device control by one of the following methods before it will send commands to the display device:

• An IR or an RS-232 driver file can be loaded from a disk or the Extron Web site and used to configure the MLC.

• RS-232 and IR commands can be added to the MLC buttons from a host computer using the supplied Windows-based configuration software. See chapter 5, “Serial Communication,” and the Windows-based configuration software help file for details on setting up the MLC and for downloading, programming, or learning device control commands using the software.

• IR commands can be entered directly from an IR remote control into the MLC through IR learning. IR learning is convenient for installing new or updated commands into the MLC in the field. It can be performed with or without the use of software.

• An MLC 52 can transfer/configure (duplicate or clone its configuration) to another MLC 52 via IR data transfer without the use of cables or software.

Each time a new device driver is used to configure the MLC, previous configurations are replaced (overwritten) by the new driver. Configurations are stored in nonvolatile memory. Therefore, if the power to the unit is interrupted, the MLC retains its settings and configuration.

Front Panel Features and Operation

The MLC 52 front panel contains six buttons, each of which can be programmed with up to four IR or RS-232 commands/functions. It also contains a configuration port, through which the MLC 52 can be connected to a PC’s RS-232 port to program the MLC’s buttons, update firmware, and save the MLC’s current configuration to the PC’s hard drive.

The two-gang sized MLC 52 IR VC and MLC 52 RS VC each have an integrated volume control knob. On these models, the two buttons normally used for volume control on the standard, one-gang MLC can be used to control additional outputs or other projector or display functions.

Buttons on the front panel

The front panel backlit buttons light amber when the MLC 52 is powered on. Buttons that are not currently selected and active are lit more dimly (25% brightness) than the selected ones (100% brightness).

When the MLC is delivered, the buttons are labeled. (You can relabel them by replacing the labels with others provided with the MLC. See “Replacing button labels” in chapter 2, “Installation.”) You can program commands onto these buttons (up to four commands per button) using IR learning, the Windows-based configuration software via the configuration port, or IR data transfer from a configured MLC 52.

Switch modes

Depending on the driver that you load to your MLC, each of the controller’s buttons is preconfigured in one of the following switch modes:

• Single switch mode: In this mode, the button operates independently of the other buttons. Pressing a button in this mode does not affect any other button.

MLC 52 Series MediaLink Controllers • Operation3-2

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Extron electronic MLC 52 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual