mvc 121 mic/line mixer and volume controller · mvc 121 • quick start guide quick start guide —...

User’s Guide

Mic/Line Mixer and Volume Controller

68-793-01 Rev. C02 09

MVC 121

Precautions

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

This symbol is intended to alert the user of thepresence of uninsulated dangerous voltage withinthe product's enclosure that may present a risk ofelectric shock.

CautionRead 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 behazardous.

WarningPower sources • This equipment should be operated only from the power source

indicated on the product. This equipment is intended to be used with a mainpower system with a grounded (neutral) conductor. The third (grounding) pin isa safety feature, do not attempt to bypass or disable it.

Power disconnection • To remove power from the equipment safely, remove allpower cords from the rear of the equipment, or the desktop power module (ifdetachable), or from the power source receptacle (wall plug).

Power cord protection • Power cords should be routed so that they are not likely tobe 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 servicethis equipment yourself because opening or removing covers may expose you todangerous voltage or other hazards.

Slots and openings • If the equipment has slots or holes in the enclosure, these areprovided to prevent overheating of sensitive components inside. These openingsmust 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 themanufacturer. Dispose of used batteries according to the manufacturer'sinstructions.

Ce symbole sert à avertir l’utilisateur que ladocumentation fournie avec le matériel contientdes instructions importantes concernantl’exploitation et la maintenance (réparation).

Ce symbole sert à avertir l’utilisateur de la présencedans le boîtier de l’appareil de tensionsdangereuses non isolées posant des risquesd’électrocution.

AttentionLire 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 posercertains dangers.

AvertissementAlimentations• Ne faire fonctionner ce matériel qu’avec la source d’alimentation indiquée

sur l’appareil. Ce matériel doit être utilisé avec une alimentation principale comportantun fil de terre (neutre). Le troisième contact (de mise à la terre) constitue un dispositif desécurité : 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 dumodule d’alimentation de bureau (s’il est amovible) ou encore de la prise secteur.

Protection du cordon d’alimentation • Acheminer les cordons d’alimentation demanière à ce que personne ne risque de marcher dessus et à ce qu’ils ne soientpas 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 êtreréparé par l’utilisateur. Afin d’éviter tout danger d’électrocution, l’utilisateur nedoit pas essayer de procéder lui-même à ces opérations car l’ouverture ou leretrait 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. Cesouvertures ne doivent jamais être bloquées par des objets.

Lithium Batterie • Il a danger d'explosion s'll y a remplacment incorrect de labatterie. Remplacer uniquement avec une batterie du meme type ou d'un ypeequivalent recommande par le constructeur. Mettre au reut les batteries usageesconformement aux instructions du fabricant.

Safety Instructions • English

Consignes de Sécurité • Français

Sicherheitsanleitungen • DeutschDieses Symbol soll dem Benutzer in der imLieferumfang enthaltenen Dokumentationbesonders wichtige Hinweise zur Bedienung undWartung (Instandhaltung) geben.

Dieses Symbol soll den Benutzer daraufaufmerksam machen, daß im Inneren desGehäuses dieses Produktes gefährlicheSpannungen, die nicht isoliert sind und die einenelektrischen Schock verursachen können,herrschen.

AchtungLesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden,

sollten Sie alle Sicherheits-und Bedienungsanleitungen genau durchlesen undverstehen.

Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit desProduktes sollten Sie aufbewahren, damit Sie im Bedarfsfall daraufzurückgreifen können.

Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungenauf dem Gerät oder in der Benutzerdokumentation.

Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, dienicht ausdrücklich vom Hersteller empfohlen wurden, da diese eineGefahrenquelle darstellen können.

VorsichtStromquellen • Dieses Gerät sollte nur über die auf dem Produkt angegebene

Stromquelle betrieben werden. Dieses Gerät wurde für eine Verwendung miteiner Hauptstromleitung mit einem geerdeten (neutralen) Leiter konzipiert. Derdritte 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 externenStomversorgung (falls dies möglich ist) oder aus der Wandsteckdose ziehen.

Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nichtim Weg liegen und niemand darauf treten kann oder Objekte darauf- oderunmittelbar dagegengestellt werden können.

Wartung • Alle Wartungsmaßnahmen sollten nur von qualifiziertemServicepersonal durchgeführt werden. Die internen Komponenten des Gerätessind wartungsfrei. Zur Vermeidung eines elektrischen Schocks versuchen Sie inkeinem Fall, dieses Gerät selbst öffnen, da beim Entfernen der Abdeckungen dieGefahr eines elektrischen Schlags und/oder andere Gefahren bestehen.

Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuseaufweist, dienen diese zur Vermeidung einer Überhitzung der empfindlichenTeile im Inneren. Diese Öffnungen dürfen niemals von anderen Objektenblockiert werden.

Litium-Batterie • Explosionsgefahr, falls die Batterie nicht richtig ersetzt wird.Ersetzen Sie verbrauchte Batterien nur durch den gleichen oder einenvergleichbaren Batterietyp, der auch vom Hersteller empfohlen wird. EntsorgenSie verbrauchte Batterien bitte gemäß den Herstelleranweisungen.

Este símbolo se utiliza para advertir al usuariosobre instrucciones importantes de operación ymantenimiento (o cambio de partes) que se deseandestacar en el contenido de la documentaciónsuministrada con los equipos.

Este símbolo se utiliza para advertir al usuariosobre la presencia de elementos con voltajepeligroso sin protección aislante, que puedanencontrarse dentro de la caja o alojamiento delproducto, y que puedan representar riesgo deelectrocución.

PrecaucionLeer 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 implicarriesgos.

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

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

Desconexión de alimentación eléctrica • Para desconectar con seguridad la acometidade alimentación eléctrica al equipo, desenchufar todos los cables de alimentación en elpanel trasero del equipo, o desenchufar el módulo de alimentación (si fueraindependiente), o desenchufar el cable del receptáculo de la pared.

Protección del cables de alimentación • Los cables de alimentación eléctrica se debeninstalar en lugares donde no sean pisados ni apretados por objetos que se puedanapoyar sobre ellos.

Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personalcalificado. En el interior no hay partes a las que el usuario deba acceder. Paraevitar riesgo de electrocución, no intentar personalmente la reparación/mantenimiento de este equipo, ya que al abrir o extraer las tapas puede quedarexpuesto 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. Estasaberturas nunca se deben obstruir con otros objetos.

Batería de litio • Existe riesgo de explosión si esta batería se coloca en la posiciónincorrecta. Cambiar esta batería únicamente con el mismo tipo (o su equivalente)recomendado por el fabricante. Desachar las baterías usadas siguiendo lasinstrucciones del fabricante.

Instrucciones de seguridad • Español

i

•

•

••

•

•

•

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•

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FCC Class A NoticeThis equipment has been tested and found to comply with the limits for aClass A digital device, pursuant to part 15 of the FCC Rules. These limits aredesigned to provide reasonable protection against harmful interference when theequipment is operated in a commercial environment. This equipment generates,uses and can radiate radio frequency energy and, if not installed and used inaccordance with the instruction manual, may cause harmful interference to radiocommunications. Operation of this equipment in a residential area is likely tocause harmful interference, in which case the user will be required to correct theinterference at his own expense.

N This unit was tested with shielded cables on the peripheral devices. Shieldedcables must be used with the unit to ensure compliance.

MVC 121 • Quick Start Guide

Quick Start Guide — MVC 121

QS-1

Step 1Disconnect all power prior to installing the MVC 121.

Step 2Mount the MVC (if applicable) or affix the rubber feet to the bottomof the MVC for tabletop use. The MVC can be mounted in a rackshelf, under furniture, or to a projector mount. See chapter 2,“Installation and Operation”, for details.

MIXER/VOLUME CONTROLLER

MIC 1

VO

L

MIC 2

MAIN 3

MASTER

Under furniture

(2) 4-40 x 3/16" screws

Use 2 mounting holeson opposite corners

VersaTools Rack Shelf

1/4 Rack WidthFalse Front Face Plate

DISTRIBUTION AMPLIFIER



MIC 1

VO

L

MIC 2

MAIN 3

MASTER

Rack shelf mounting

Projector

PMK 100

MVC 121

ON

INP

UT

S

OUTPUTS

LEVEL

48VON

OF

F

MA

IN 3

LIN

E

MIC

RS

-232M

UT

E

Tx

Rx

PO

WE

R12V

0.5A

MA

X

L

12

R

3

12

34

12

12

MIXER/VO

LUME

CONTRO

LLER

FIX

ED

LR

MIC

1M

IC 2

VAR

IAB

LE

LR

MountingBolt

To a projector mount

Quick Start Guide — MVC 121, cont’d

MVC 121 • Quick Start GuideQS-2

Step 3Attach the cables and set the DIP switches.

MVC 121

ON

INPUTS

OU

TP

UT

S

LE

VE

L

48V

ON

OFF

MAIN 3

LINE

MIC

RS-232 MUTE

Tx Rx

POWER12V 0.5A MAX

L

1 2

R

3

1 2 3 4

1 2 1 2


FIXED

L R

MIC 1 MIC 2 VARIABLEL R

7 81 2 3 5

4 6

1 Power connector — Connect the 12 VDC external powersupply.

CAUTION When connecting the power supply, voltagepolarity is extremely important. Applying powerwith incorrect voltage polarity could damage thepower supply and the MVC 121.

2 Mic input DIP switch — Mic 1 and Mic 2 inputs are controlledvia the DIP switch.

1. Set the mic input Level according to the mic type:

a. Wireless mic: Set the mic’s DIP switch to Line (On).

b. Wired mic: Set the mic’s DIP switch to Mic (Off).

2. Set the 48V phantom power according to the mic type:

a. Condenser mic: Set the mic’s DIP switch to On.

b. Dynamic mic: Set the mic’s DIP switch to Off.

CAUTION Never set a dynamic microphone to 48V, doing somay damage the microphone. For condenser mics,verify that the mic will safely operate at 48VDC.

When the DIP switch is set to line level, 48V phantompower is disabled regardless of its DIP switch position.

3 Mic 1 and Mic 2 input connector — Up to two monomicrophones, balanced and/or unbalanced, may be connected.

4 Main 3 line level input connector — Connect a line level audiosource.

MVC 121 • Quick Start Guide

5 Variable output connector — The balanced/unbalanced stereooutput is controlled by the Master volume control knob on thefront panel.

6 Fixed output connector — The balanced/unbalanced stereooutput is set at a fixed level for input to a recording device.Signal level can be adjusted at the recording device.

7 RS-232 connector — Connect an RS-232 device (control systemor PC) for two-way RS-232 communication.

8 Mute connector — Connect a contact closure device to mutethe inputs. See “Contact Closure Mute” in chapter 3.

Step 4Adjust the front panel volume controls. See chapter 2, “Installationand Operation”.

MIXER/VOLUME CONTROLLERMVC 121

MIC 1

VO

L

MIC 2 MAIN 3 MASTER

2 13 4 5

1

1 Volume level LEDs — Mic 1, Mic 2, Main 3, and Master gain/volume level indicators.

2 Mic 1 input gain control and on/off indication LED

3 Mic 2 input gain control and on/off indication LED

4 Main 3 line level input gain control and on/off indication LED

5 Master output volume control and on/off indication LED tocontrol variable output

QS-3

Quick Start Guide — MVC 121, cont’d

MVC 121 • Quick Start GuideQS-4

MVC 121 • Table of Contents

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

About the MVC 121 ............................................................... 1-2

Features ...................................................................................... 1-2

Chapter 2 • Installation and Operation .......................... 2-1

Mounting the MVC 121 ....................................................... 2-2Tabletop use ........................................................................... 2-2UL rack mounting guidelines ................................................. 2-2Rack mounting ....................................................................... 2-3Furniture or projector mounting ........................................... 2-4

Furniture mounting .......................................................... 2-4Projector mounting .......................................................... 2-5

Application Diagram ........................................................... 2-6

Rear Panel Features and Cabling .................................. 2-7

Front Panel Features ..........................................................2-12Turning channels on/off .......................................................2-13On/off status LEDs ...............................................................2-14Mute/unmute channel .........................................................2-14Front panel security lockout (executive mode) ..................2-14

Chapter 3 • Remote Control ................................................... 3-1

RS-232 Programmer’s Guide ............................................ 3-2Host-to-MVC communications ............................................... 3-2MVC-initiated messages ........................................................ 3-2Error responses ...................................................................... 3-2Using the command/response table ..................................... 3-3Command/response table ..................................................... 3-5

Windows-based Program Control .................................. 3-9Installing the software .......................................................... 3-9Using the software ..............................................................3-10

Setting output volume range limits ................................ 3-10Using the help system .........................................................3-12Updating the firmware .......................................................3-12

Contact Closure Mute ........................................................3-13

Appendix A • Specifications, Part Numbers, andAccessories ........................................................................................ A-1

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

Included Parts ......................................................................... A-5

Optional Accessories .......................................................... A-5

Table of Contents

TOC-i

MVC 121 • Table of Contents

Table of Contents, cont’d

TOC-ii

68-793-01 Rev. C02 09

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

MVC 121 Mic/Line Mixer

1Chapter One

Introduction

About the MVC 121

Features

MVC 121 • Introduction

Introduction

About the MVC 121The Extron MVC 121 is an audio mixer and volume controller inthe Extron VersaTools™ product line that mixes up to two micinputs (mono, balanced/unbalanced) with one main line levelinput (stereo, balanced/unbalanced). Each mic input and themain line level input have their own gain control knobs, and themixed output also features a volume control knob.

Volume adjustment interval varies with the speed of knobrotation, i.e., turning the knob slowly increments the volume insmaller steps (0.5 dB), and turning the knob quickly incrementsthe volume in larger steps (2.5 dB).

Two sets of outputs include a fixed output that is independentfrom volume control, and a variable output that is volumeadjustable. All inputs and outputs are via 3.5 mm captive screwconnectors, and the volume settings are indicated by four LEDs.

The MVC offers RS-232 control of input gain/attenuation, andcontrol of output volume. RS-232 control also includes thecapability to turn the inputs and output on/off. The latestfirmware can be uploaded using RS-232 and the Extron controlprogram for Windows®.

FeaturesFurniture, rack, and projector mountability — The Extron

MVC 121 can be mounted under a desk or otherfurniture, or mounted on a projector lift with optionalbrackets. Alternatively, it can be rack mounted on anoptional rack shelf.

Microphone inputs — Built-in switchable microphone amplifierwith 48 V phantom power and separate level setting foreach microphone.

Front panel security lockout (executive mode) — The volumesettings for the inputs and the output can be protectedfrom unauthorized changes by enabling the executivemode, although the volume settings can still be displayedby the LEDs when the volume control knobs are turned.

Stand-alone volume controller — The MVC 121 can operate asa volume controller for the main line level input withboth mic inputs turned off.

RS-232 control — Allows remote control of the MVC using theExtron Simple Instruction Set™ (SIS™), the Extron controlsoftware for Windows, or other remote control system.

1-2


2Chapter Two

Installation and Operation

Mounting the MVC 121

Application Diagram

Rear Panel Features and Cabling

Front Panel Features

MVC 121 • Installation and Operation

Installation and Operation

Mounting the MVC 121The one rack unit high, quarter rack wide MVC can be set on atable, mounted on a rack shelf, mounted under a desk ortabletop, or mounted on a projector bracket.

Tabletop useEach MVC comes with rubber feet (not installed). For tabletopuse, attach a self-adhesive rubber foot to each corner of thebottom of the unit.

UL rack mounting guidelinesThe following Underwriters Laboratories (UL) guidelinespertain to the safe installation of the MVC 121 in a rack.

1. Elevated operating ambient temperature — If installed ina closed or multi-unit rack assembly, the operatingambient temperature of the rack environment may begreater than room ambient temperature. Therefore,install the MVC in an environment compatible with themaximum ambient temperature (Tma = +122 °F, +50 °C)specified by Extron.

2. Reduced air flow — Install the equipment in a rack so thatthe amount of air flow required for safe operation of theequipment is not compromised.

3. Mechanical loading — Mount the equipment in the rackso that a hazardous condition is not achieved due touneven mechanical loading.

4. Circuit overloading — Connect the equipment to thesupply circuit and consider the effect that circuitoverloading might have on overcurrent protection andsupply wiring. Appropriate consideration of equipmentnameplate ratings should be used when addressing thisconcern.

5. Reliable earthing (grounding) — Maintain reliablegrounding of rack-mounted equipment. Pay particularattention to supply connections other than directconnections to the branch circuit (e.g. use of power strips).

2-2


Rack mountingFor optional rack mounting, do not install the rubber feet.Mount the MVC on a VersaTools® 19" 1U rack shelf (ExtronRSF 123, part #60-190-20; Extron RSB 123, part #60-604-20), or astandard Universal 1U or Basic rack shelf (Extron RSU 129, part#60-190-01; Extron RSB 129 or #60-604-01). On the standard rackshelf, the MVC mounts in one of four locations to the rear of therack or in one of four locations to the front of the rack.

1. If rubber feet were previously installed on the bottom ofthe MVC, remove them.

2. Mount the MVC on the rack shelf, using two 4-40 x 3/16"screws in opposite (diagonal) corners to secure the MVCto the shelf.

(2) 4-40 x 3/16" screws

Use 2 mounting holeson opposite corners

VersaTools Rack Shelf

1/4 Rack WidthFalse Front Face Plate




MIC 1

VO

L

MIC 2

MAIN 3

MASTER

Mounting the MVC on a VersaTools rack shelf

2-3


Installation and Operation, cont’d

2-4


MIC 1

VO

L

MIC 2

MAIN 3

MASTER


MDA SERIES


A/V SWITCHER

AUTO SWICH MODE

NORMAL

AUTO

1

2

3

4

Mounting the MVC on a standard 1U rack shelf

3. Install blank panel(s) or other unit(s) on the rack shelf.

Furniture or projector mountingFurniture mount or projector mount the MVC using theoptional mounting kit (Extron MBU 123, part #70-212-01,furniture; or Extron PMK 100, part #70-217-01, projector) asfollows:

1. Attach the mounting brackets to the MVC with themachine screws provided.

2. If feet were previously installed on the bottom of theMVC, remove them.

Furniture mounting3a. Hold the MVC with the attached brackets against the

underside of the table or other furniture. Mark thelocation of the screw holes of the bracket on the mountingsurface.

4a. Drill 3/32" (2 mm) diameter pilot holes, 1/4" (6.3 mm)deep in the mounting surface at the marked screwlocations.

5a. Insert #8 wood screws into the four pilot holes. Tighteneach screw into the mounting surface until just less than1/4" of the screw head protrudes.

6a. Align the mounting screws with the slots in the bracketsand place the MVC against the surface, with the screwsthrough the bracket slots. See the following illustration.



MIC 1

VO

L

MIC 2

MAIN 3

MASTER

Mounting the MVC to furniture

7a. Slide the MVC slightly forward or back, then tighten allfour screws to secure the MVC in place.

Projector mounting3b. Secure the MVC to a projector mount or other surface by

inserting the mounting bolt through the bracket’s slottedhole, as shown below.

Projector

PMK 100

MVC 121

ON

INP

UT

S

OUTPUTS

LEVEL

48VON

OF

F

MA

IN 3

LIN

E

MIC

RS

-232M

UT

E

Tx

Rx

PO

WE

R12V

0.5A

MA

X

L

12

R

3

12

34

12

12

MIXER/VO

LUME

CONTRO

LLER

FIX

ED

LR

MIC

1M

IC 2

VAR

IAB

LE

LR

MountingBolt

Mounting the MVC to a projector mount

2-5



2-6

Application Diagram

MVC 121

ON

INPUTS

OU

TP

UT

S

LE

VE

L 48V

ON

OFF

MAIN 3

LINE

MIC

RS-232MUTE

Tx Rx

POWER

12V

0.5A MAX

L

12R

3

12

34

12

12

MIXER/VOLUME

CONTROLLER

FIXED

L

R

MIC 1

MIC 2

VARIABLE

L

R

ExtronSW 6AVSwitcher

ExtronMVC 121Mixer/VolumeController

100-240V 0.3A

50-60Hz

REMOTE

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

INPUTS

OUTPUTS

5

2

1

3

4

A

6

BSW 6AV

INPUTS

OUTPUTSSYNC

IN

12

34

56

AB

OUT

LISTED

1T23

I.T.E.

C

U S

Audio Amplifier

Audio Recorder

RS-232 Control

WirelessMicrophone

Contact ClosureMute (AAP)


Rear Panel Features and Cabling

MVC 121

ON

INPUTS

OU

TP

UT

S

LE

VE

L

48V

ON

OFF

MAIN 3

LINE

MIC

RS-232 MUTE

Tx Rx

POWER12V 0.5A MAX

L

1 2

R

3

1 2 3 4

1 2 1 2


FIXED

L R

MIC 1 MIC 2 VARIABLEL R

7 81 2 3 5

4 6

1 Power connector — Connect the included 12 VDC externalpower supply into the 2-pole 3.5 mm captive screw connector.Be careful to observe the correct polarity.

Orange Captive ScrewConnector

Tie Wrap

Power SupplyOutput Cord

RidgesSmooth

AA

SECTION A–A

CAUTION When connecting the power supply, voltagepolarity is extremely important. Applying powerwith incorrect voltage polarity could damage thepower supply and the MVC 121. Identify thepower cord negative (ground) lead by the ridges onthe side of the cord or a black heat shrink wrappingaround it.

The two power cord wires must be kept separatewhile the power supply is plugged in. Removepower before wiring.

To verify the polarity before connection, check the no loadpower supply output with a voltmeter.

CAUTION The length of the exposed (stripped) copper wires isimportant. The ideal length is 5/16” (7 mm).Longer bare wires can short together. Shorterwires are not as secure in the direct insertionconnectors and could be pulled out.

2-7



2-8

Use the supplied tie-wrap to strap the power cord to theextended tail of the connector.

Your MVC 121 may have shipped with a blue captivescrew connector. This blue connector can be pluggedinto either a blue or an orange power receptacle.

The ideal length of exposed (stripped) copper wirefor the blue connector is 3/16" (5 mm).

The blue connector does not have the extended tail or theincluded tie-wrap.

Do not tin the power supply leads before installing in thedirect insertion connector. Tinned wires are not assecure in the connectors and could be pulled out.

After making any adjustments to the MVC 121, eithervia the front panel controls, SIS commands, or theExtron Audio Products Control Program, wait at least10 seconds after making those changes beforedisconnecting power to the MVC 121. Failure toobserve the 10-second timeout may result in thoseadjustments not being saved.

2 Mic input DIP switch— Mic 1 and Mic 2 inputs are controlledvia a DIP switch.

1. Set the mic input Level according to the microphone type:

a. Wireless mic: Set the mic’s DIPswitch to the Line position (On).

b. Wired mic: Set the mic’s DIP switchto the Mic position (Off).

2. Set the 48V phantom power position according tomicrophone type:

a. Condenser mic: Set the mic’s DIP switch to the Onposition.

b. Dynamic mic: Set the mic’s DIP switch to the Offposition.

Condenser microphones require power. Dynamicmicrophones do not require power.

When a mic’s input level DIP switch is set to “line”level, that input’s 48V phantom power is disabledregardless of the “48V” phantom power DIP switchsetting of that input.

ON

LE

VE

L

48V

ON

OFF

LINE

MIC 1 2 3 4

1 2 1 2


CAUTION Never set an unbalanced dynamic microphone to48V, doing so may damage the microphone. Forcondenser mics, verify that the mic will safelyoperate at 48 VDC.

3 Mic 1 and Mic 2 input connector — Up to two monomicrophones, balanced and/or unbalanced, may be connectedto this 5-pole 3.5 mm captive screw connector. See the followingdiagram.

Mic inputs will be evenly mixed into both left and rightoutputs.

MIC 1

Balanced MIC Unbalanced MIC

MIC 2

Example wiring of balanced and unbalanced mics

4 Main 3 line level input connector — Connect a line level audiosource to this 5-pole 3.5 mm captive screw connector, such as aCD player, DVD player, tape deck, etc. Balanced or unbalancedstereo connections can be wired to this connector.

DVD Extron CSR 6 Adapter

MA

IN 3

LR

Example of DVD line level input to Main 3 input

Input devices cabled with two RCA male outputs may beconnected to the 5-pole 3.5 mm captive screw connectorusing the Extron CSR 6 adapter, part #26-575-01.

To wire the captive screw connectors to RCA or 3.5 mm miniphone plugs, see the illustrations below.

Tip (+)

Sleeve ( )

RCA Connector

3.5 mm mini stereo plug

Tip (L) Sleeve (GND)

Tip (L)Ring (R)

Sleeve (GND)

2-9



2-10

Unbalanced Input

TipSleeve

TipSleeve

Balanced InputL

R

LR

TipRing

Sleeve (s)Tip

Ring

5 Variable output connector — The balanced/unbalanced stereooutput to an amplifier from the 5-pole 3.5 mm captive screwconnector (see the diagrams below) is controlled by the Mastervolume control knob on the front panel (see “Front PanelFeatures” in this chapter). Adjust the speaker volume by usingthe following sequence:

1. Adjust the amplifier’s volume down to its minimumsetting.

2. Adjust the Master volume control of the MVC to its defaultlevel (volume = 80 when connecting to an unbalancedconsumer amp, or volume = 86 when connecting to abalanced professional amp).

3. Adjust the amplifier’s volume to the desired level.

4. Make subsequent volume level adjustments by using theMVC’s Master volume control.

Output devices cabled with two RCA male inputs maybe connected to the 5-pole 3.5 mm captive screwconnector using the Extron CSR 6 adapter,part #26-575-01.

Sound SystemExtron CSR 6 Adapter

VA

RIA

BL

EL

R

Example using the Variable output connected to anamplified sound system

Unbalanced Output Balanced Output

TipNO GROUND HERE

Sleeve (s)Tip

NO GROUND HERE

TipRing

Sleeve (s)Tip

Ring

LR

LR

CAUTION Connect the sleeve to ground (Gnd). Connectingthe sleeve to a negative (-) terminal will damage theaudio output circuits.


6 Fixed output connector — The balanced/unbalanced stereooutput from this 5-pole 3.5 mm captive screwconnector is output at a fixed volume level forinput to a recording device. Volume level canbe adjusted at the recording device.

The Master volume control knob on the front paneloperates independently from the fixed output.

The Fixed output connector is wired the same as the Variableoutput connector. See 5 , Variable output connector, for anexample application diagram with cabling instructions and acaution.

Both the Fixed and Variable output connectors willoutput audio simultaneously.

7 RS-232 connector — Connect an RS-232 device(control system or PC) to the 3-pole 3.5 mmcaptive screw connector for two-way RS-232communication.

Software for RS-232 control is includedwith the MVC. See chapter 3, “RemoteControl”, for information on how toinstall and use the control software and SIS commands.

8 Mute connector — Connect a contact closure deviceto the 6-pole 3.5 mm captive screw connector tomute the inputs, as follows:

1. Short and hold pin 1 to ground to mute Mic 1input.

2. Short and hold pin 2 to ground to mute Mic 2 input.

3. Short and hold pin 3 to ground to mute Main 3 line levelinput.

See chapter 3, the “Contact Closure Mute” section.

RS-232 and Mute share the same ground.

The associated input remains muted during the time period thecontact closure pin is shorted to ground and all the front paneland RS-232 controls for that input are disabled. As soon as theshort is removed, the contact closure mute is disabled and theother controls are enabled.

32 MUTE

1 2 3

Transmit (Tx)Receive (Rx)

Ground (Gnd, )

Tx Rx

RS-232

FIXED

L R

2-11



2-12

Front Panel Features

MIXER/VOLUME CONTROLLERMVC 121

MIC 1

VO

L

MIC 2 MAIN 3 MASTER

2 13 4 5

1

All front panel control knobs are speed sensitive. Turnthe knob quickly to make coarse gain/volumeadjustments or slowly to make fine adjustments.

1 Gain/Volume level LEDs — The four vertical LEDs indicate thelevel setting of the last adjusted knob of the four front panelvolume control knobs for Mic 1, Mic 2, Main 3, and Master. If noknob is adjusted within 5 seconds, all four LEDs turn off.Turning any of the knobs clockwise increases the gain/volumesetting, and turning any of the knobs counterclockwisedecreases the gain/volume setting. A higher gain/volume levelis indicated by more LEDs being lit (from bottom to top).

When the Mic 1, Mic 2, and Main 3 maximum gain setting isreached (+12 dB), the top LED flashes threetimes. When the minimum setting is reached(-79 dB) or if no knob is turned for 5 seconds,the four LEDs are off until the nextadjustment. The default input gain setting is 0dB. See the dB levels and the correspondingLEDs in the illlustration.

When the maximum volume setting is reached (92), the topLED will flash three times. When the minimumsetting is reached (0) or if no knob is turned for5 seconds, the four LEDs are off until the nextadjustment. The default output volume settingis 50. See the level and the corresponding LEDsin the illustration on the right.

2 Mic 1 input volume control and on/off status LED — Turningthe knob clockwise increases the gain setting, and turning theknob counterclockwise decreases the volume setting. Theon/off LED indicator lights whenever Mic 1 is on or not muted,but the LED goes off after the minimum volume setting hasbeen reached.

VO

L +12 dB maximum

+10 dB

0 dB (default)

-30 dB

-50 dB

VO

L

92 maximum90

80

50 (default)

20


The gain level is indicated by the Gain/Volume level LEDs (see1 ).

3 Mic 2 input volume control and on/off status LED — Turningthe knob clockwise increases the gain setting, and turning theknob counterclockwise decreases the volume setting. Theon/off LED indicator lights whenever Mic 2 is on or not muted,but the LED goes off after the minimum volume setting hasbeen reached.


4 Main 3 line level input volume control and on/off status LED— Turning the knob clockwise increases the gain setting, andturning the knob counterclockwise decreases the volumesetting. The on/off LED indicator lights whenever Main 3 is onor not muted, but the LED goes off after the minimum volumesetting has been reached.


5 Master output volume control and on/off status LED —Turning the knob clockwise increases the volume setting, andturning the knob counterclockwise decreases the volumesetting. The on/off LED indicator lights whenever masteroutput is on or not muted, but the LED goes off after theminimum volume setting has been reached.

The output volume level is indicated by the Gain/Volume levelLEDs (see 1 ).

CAUTION To prevent possible damage to audio equipment, theoutput volume range may be specified by settingthe upper and lower limits via the Windows-basedExtron Audio Products Control Program or the SIScommands.

See the chapter 3 sections, “Setting outputvolume range limits” and “Using thecommand/response table”.

Turning channels on/offTo turn a channel off, turn the knob counterclockwise until thestatus LED goes off. To turn a channel on, turn the knob slightlyclockwise until the status LED goes on. Whenever aninput/output is being adjusted from the front panel, itson/off status LED indicator goes on and all other on/off statusLED indicators and the Gain/Volume level LEDs go off for 5seconds.

2-13



2-14

On/off status LEDsIf no adjustment of the front panel has occurred for 5 seconds,the Gain/Volume level LEDs goes off. All the on/off statusLEDs next to each knob are active to indicate the current setting(LED on indicates that the channel is on, LED off indicates thatthe channel is muted or off).

Mute/unmute channelA channel that has been muted by an SIS command can beunmuted by turning the front panel knob clockwise.

For contact closure muted input, no front panel adjustment ofthat input is allowed. Any attempt to adjust that input causesthe input’s status LED to blink 3 times.

Front panel security lockout (executive mode)Executive mode is a security feature that prevents the frontpanel knobs from being adjusted.

There are two forms of executive mode and each can only beenabled/disabled via RS-232 commands. See chapter 3,“Remote Control”, for command details.

1. Executive mode 1: The Mic 1, Mic 2, and Main 3 input gaincontrol knobs on the front panel are locked, although theGain/Volume level LEDs still show the current gainsettings for those inputs if any of those three knobs arerotated slightly. For a muted input, no gain/volume levelwill be displayed. The individual LED for each input gaincontrol knob flashes three times if that knob is rotatedwhile in Executive mode 1.

The Master output volume control knob is not locked inExecutive mode 1.

2. Executive mode 2: All four front panel volume controlknobs are locked, although the Gain/Volume level LEDsstill show the current gain/volume settings if any knobsare rotated slightly. For a muted input, no gain/volumelevel is displayed. The individual LED for each gain/volume control knob flashes three times if that knob isrotated while in Executive mode 2.


3Chapter Three

Remote Control

RS-232 Programmer’s Guide

Windows-based Program Control

Contact Closure Mute

MVC 121• Remote Control

Remote Control

3-2

RS-232 Programmer’s GuideThe MVC 121 can be remotely controlled via a hostcomputer attached to the rear panel’s 3-pole captivescrew RS-232 connector. The protocol is 9600 baud,1 stop bit, no parity, and no flow control.

The RS-232 control device (host) can use either Extron’s SimpleInstruction Set (SIS) commands or the graphical controlprogram for Windows. Windows control software is includedwith the MVC.

The rear panel’s RS-232 3-pole female connector has thefollowing pin assignments:

Pin RS-232 function Description

1 Tx Transmit data2 Rx Receive data3 Gnd Signal ground

Host-to-MVC communicationsSIS commands consist of one or more characters per field. Nospecial characters are required to begin or end a commandsequence. When a command is valid, the MVC executes thecommand and sends a response to the host device. Allresponses from the MVC to the host end with a carriage returnand a line feed (CR/LF = ), which signals the end of theresponse character string. A string is one or more characters.

MVC-initiated messagesWhen a local event such as a front panel or contact closureselection or adjustment takes place, the MVC sends a messageto the host. No response is required from the host. One MVC-initiated message is listed here (underlined).

(C) Copyright 2004, Extron Electronics, MVC 121, V x.xx The MVC issues the copyright message when it first powers on.V x.xx is the firmware version number.

Other examples of unsolicited responses are indicated in the SIScommand/response table by a following every description ofa response that could also be an unsolicited response.

Error responsesWhen the MVC 121 receives a valid SIS command, it executesthe command and sends a response to the host device. If theMVC is unable to execute the command because the command

RS-232

Tx Rx

MVC 121• Remote Control 3-3

is invalid or it contains invalid parameters, it returns an errorresponse to the host.

The error response codes and their descriptions are as follows:

E01 – Invalid channel numberE10 – Invalid commandE13 – Invalid value (the number is out of range)E14 – Invalid command at this time (input on/off command not

valid during contact closure mute)E23 – Firmware update failure

Using the command/response tableThe command/response table lists valid command ASCII codes,the MVC’s responses to the host, and a description of thecommand’s function or the results of executing the command.Lower case characters are acceptable in the command field onlywhere indicated. The ASCII to HEX conversion table below isfor use with the command/response table.

ASCII to HEX Conversion Table

•

The command/response table uses symbols (defined below) torepresent variables.

The SIS on/off commands and the equivalent front paneloperations have equal priority. The MVC will respondto the latest settings from either SIS commands or frontpanel operations.

Symbol definitions= CR/LF (carriage return/line feed) (hex 0D 0A)

• = Space= Every response that could also be an unsolicited response

will have this symbol at the end of each description of thatresponse.

X1 = Master (output) volume adjustment range (0 – 92),default = 50 (-30 dB), gain (dB) = X1 - 80

MVC 121 • Remote Control

Remote Control, cont’d

3-4

X2 = Input or output to be adjusted (1 – 4) 1 = mic 1 2 = mic 2 3 = main line level 4 = master output

X3 = On/off status 0 = off (mute) 1 = on (unmute) 2 = mute by contact closure

X4 = Input audio gain/attenuation value ( -79 through +12)

X5 = Audio gain (per input) (0 – 12)

X6 = Audio attenuation (per input) (1 through 79)

X7 = Controller firmware version (listed to two decimal places,i.e., x.xx)

X8 = Front panel security lockout (executive modes) 0 = off 1 = mode 1 (lock all front panel controls except master volume) 2 = mode 2 (lock all front panel controls)

X9 = Rear panel DIP switch settings (0 through 15)See the following tables.

ON

LE

VE

L

48V

ON - up

OFF - down

LINE

MIC 1 2 3 4

1 2 1 2

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

DIP switch 1

DIP switch 2

DIP switch 3

DIP switch 4

X9 =

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Mic 1Level

Mic 248V

Mic 1

48V

Mic 2

Off

Off

Off

Off

Off

Off

Off

On

Off

Off

On

Off

Off

Off

On

On

Off

On

Off

Off

Off

On

Off

On

Off Off On On On On On On On On

On On Off Off Off Off On On On On

On On Off Off On On Off Off On On

Off On Off On Off On Off On Off On

DIP Switch Positions

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

DIP switch 1

DIP switch 2

DIP switch 3

DIP switch 4

X9 =

Level

Mic 1Level

Mic 248V

Mic 1

48V

Mic 2

Mic

Mic

Off

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Mic

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On

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Mic

On

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Mic

Mic

On

On

Mic

Line

Off

Off

Mic

Line

Off

Off

Mic Mic Line Line Line LineLineLine LineLine

LineLine Mic Mic Mic Mic LineLineLineLine

On On Off Off Off Off Off Off Off Off

Off Off Off On Off On Off Off Off Off

DIP Switch Functions

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Windows-based Program ControlThe Extron Audio Products Control Program is compatible withWindows 2000 and Windows XP, and provides remote control ofthe input gain/attentuation, output volume output adjustment,and other features.

Updates to this program can be downloaded from the ExtronWeb site (http://www.extron.com).

Installing the softwareThe program is contained on the EXtron Software Products CD-ROM, disk B. Install the software as follows:

1. Insert the CD-ROM into the drive

2. Click the Software tab.

3. Scroll to the desired program and click Install.

4. Follow the on-screen instructions. By default, theWindows installation creates a C:\ProgramFiles\Extron\AudProds folder and saves the programthere.



Using the softwareTo run the software:

1. Double click the Audio Products Control Program icon inthe Extron Electronics program group.

2. Click the comm port that is connected to the unit’s remoteconnector.

3. Click OK. The Audio Products Control Programmain window displays the input gain/attenuationsettings for each channel and allows the user toadjust them. The user can also adjust the volumesetting for the output channel. See “Setting output volumerange limits” in this chapter.

The window contains channel mute, front panel lock out(executive modes), and unit reset controls.

The front panel lockout feature prevents unauthorizedadjustments to the MVC’s front panel. See Front panelsecurity lockout (executive mode) in chapter 2.

Setting output volume range limits

The Master output volume control can be configured withupper and lower range limits to restrict the volume output.Setting range limits may prevent possible damage to audioequipment. From the File drop-down menu, select AdvancedSetup, then select Set Limits.

3-10


From the Master output volume range indicator, set the upperand lower range limits by moving the arrowhead indicators.After setting the limits, the output volume can only be setwithin the specified range limits, as shown below.



3-12

Using the help systemFor information about program features, you can access thehelp program in any of the following ways:

• From the Extron Electronics program group,double-click the Audio Products Help icon.

• From within the Audio Products Controlprogram, click Help on the task bar.

• From within the Audio Products Control program, pressthe F1 key.

Updating the firmwareFirmware updates will be available on the Extron Web site. Toload a firmware update:

1. Download the update file from the Extron Web site(www.extron.com).

2. Run the Audio Products Control Program.

3. On the File menu, click Update Firmware. The FirmwareLoader window appears.

Firmware Loader window

4. Click the Upload Firmware File button.

5. Locate and select the update file you downloaded from theWeb site and click Open. The Firmware Loader loads theupdate.

The firmware update file must have an .s19 extension. Ifit does not have that extension it will not work properly.

6. When the program is finished loading the update, clickExit.

32 MUTE

1 2 3


Contact Closure MuteFor contact closure mute, connect a contact closure remotecontrol device to the rear panel’s female 6-pole captive screwconnector. The pin assignments for the MVC’s contact closuremute connector are shown in the following table.

Pin Contact closure Description1 Connect pin 1 to Gnd Mute input Mic 12 Connect pin 2 to Gnd Mute input Mic 23 Connect pin 3 to Gnd Mute input Main 3

Gnd Signal ground

Contact closure mute has higher priority over both SIScommands and front panel operations and is not affectedby either SIS commands or front panel operations.

After contact closure mute has been removed, the inputsettings will return to the original settings that were ineffect prior to the mute, including input on/off statusand gain setting.

3-13



3-14


AAppendix

Specifications, Part Numbers,and Accessories

Specifications

Included Parts

Optional Accessories

MVC 121 • Specifications, Parts, Accessories

Specifications, Parts, and Accessories

A-2

Specifications

AudioGain from mic input to both fixed and variable outputs at default settingsMic DIP switch = line level .......... Unbalanced output: +20 dB; balanced

output: +26 dBMic DIP switch = mic level .......... Unbalanced output: +50 dB; balanced

output: +56 dBGain from main input to both fixed and variable outputs at default settings

Unbalanced output: 0 dB; balanced output:+6 dB

Master volume range .................. 0 to 92 (“off”, and -79 dB to +12 dB in 0.5dB steps)

Mic 1, 2, and Main 3 gain range . -79 dB to +12 dB in 0.5 dB stepsFrequency response .................... 20 Hz to 20 kHz, ±0.05 dBTHD + Noise ................................. 0.03% @ 1 kHz at nominal levelS/N ................................................ >90 dB, balanced, at maximum outputCrosstalk ....................................... <-80 dB @ 1 kHz, <-60 dB @ 20 kHz, fully

loadedStereo channel separation .......... >80 dB @ 1 kHz, >60 dB @ 20 kHzCMRR ............................................ >75 dB @ 20 Hz to 20 kHz

N All input gain default settings are at 80. The master volumedefault setting is 50 (-30 dB).

Audio inputNumber/signal type

Microphone inputs .......... 2 mono, balanced/unbalancedMain input ......................... 1 stereo, balanced/unbalanced

ConnectorsMicrophone inputs .......... (1) 3.5 mm captive screw connector, 5 poleMain input ......................... (1) 3.5 mm captive screw connector, 5 pole

Impedance .................................... >10k ohms, DC coupledNominal level (mic inputs)

DIP switch = line level ..... -30 dBV (32 mV) for a wirelessmicrophone

DIP switch = mic level ..... -60 dBV (1 mV) for a wired microphoneNominal level (main input) ........ -10 dBV (316 mV)Maximum level ............................ +20 dB above nominal level, (balanced or

unbalanced) at 1% THD+NInput gain adjustment ................. -79 dB to +12 dB, adjustable per input

MVC 121 • Specifications, Parts, Accessories A-3

Input level sensitivity (mic inputs)DIP switch = line level ..... -42 dBV (8 mV) for nominal outputDIP switch = mic level ..... -72 dBV (0.25 mV) for nominal output

Input level sensitivity (main input)-22 dBV (79 mV) for nominal output

N 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV H” 2 dBu

Audio outputNumber/signal type ................... 2 stereo, balanced/unbalancedConnectors ................................... (2) 3.5 mm captive screw connector, 5 poleImpedance .................................... 50 ohms unbalanced, 100 ohms balancedGain error ..................................... ±0.1 dB channel to channelNominal level ............................... +4 dBu (1.23 V), balanced output (when

gain is set to +6 dB)-10 dBV (0.316 V), unbalanced output

Maximum level (Hi-Z) ................ >+24 dBu, balanced; >+18 dBu, unbalancedat 1% THD+N

Maximum level (600 ohm) ......... >+15 dBm, balanced at 1% THD+N

Control/remote— mixer/volume controllerSerial control port ........................ RS-232, 3.5 mm female captive screw

connector (3 poles of a 6 pole connector)Baud rate and protocol ............... 9600, 8-bit, 1 stop bit, no paritySerial control pin configurations 1 = TX, 2 = RX, 3 = GNDContact closure mute control .... 1 = mic 1, 2 = mic 2, 3 = main inputProgram control .......................... Extron’s control program for Windows®

Extron’s Simple Instruction Set (SIS™)

GeneralExternal power supply ................ 100 VAC to 240 VAC, 50/60 Hz, external;

to 12 VDC, 1 A, regulatedPower input requirements ......... 12 VDC, 0.5 A.Temperature/humidity .............. Storage -40° to +158°F (-40° to +70°C) /

10% to 90%, noncondensingOperating +32° to +122°F (0° to +50°C) /10% to 90%, noncondensing

Cooling .......................................... Convection, no ventsMounting


Specifications, Parts, and Accessories, cont’d

A-4

Rack mount ...................... Yes, with optional 1U, 9.5" deep rack shelf(RSU 129, #60-190-01; RSB 129, 60-604-01);1U, 6" deep rack shelf (RSU 126, #60-190-10; RSB 126, 60-604-10); or VersaTools® 1U,3.5" deep rack shelf (RSF 123, #60-190-20;RSB 123, 60-604-20)

Furniture mount .............. Yes, with optional VersaTools mini under-desk mounting kit, part #70-212-01 (MBU123)

Pole mount ....................... Yes, with VersaTools mini pole mount kit,part #70-217-01 (PMK 100)

Enclosure type ............................. MetalEnclosure dimensions ................. 1.7" H x 4.3" W x 3.0" D (1U high, quarter

rack wide)(4.3 cm H x 10.9 cm W x 7.6 cm D)(Depth excludes connectors and knobs.)

Product weight ............................. 0.6 lbs (0.3 kg)Shipping weight ........................... 3 lbs (2 kg)Vibration ....................................... ISTA 1A in carton (International Safe

Transit Association)Regulatory compliance

Safety ................................. CE, CUL, ULEMI/EMC ......................... CE, C-tick, FCC Class A, ICES, VCCI

MTBF ............................................. 30,000 hoursWarranty ....................................... 3 years parts and labor

N All nominal levels are at ±10%.

N Specifications are subject to change without notice.


Optional Accessories

Accessory Part number

RSF 123 VersaTools® rack shelf kit 60-190-20

RSB 123 VersaTools rack shelf 60-604-20

RSU 129 1U universal rack shelf 60-190-01

RSB 129 1U basic rack shelf 60-604-01

RSU 126 6" deep universal rack shelf kit 60-190-10

RSB 126 6" deep basic rack shelf 60-604-10

MBU 123 under-desk mount kit 70-212-01

PMK 100 mini projector mount kit 70-217-01

A-5

Included PartsThese items are included in each order for an MVC 121:

Included parts Replacement part number

MVC 121 60-572-01

3.5 mm, 5-pole captive screw connectors (4) 10-319-10

3.5 mm, 2-pole captive screw connector 10-319-15

3.5 mm, 6-pole captive screw connector 10-319-14

MVC 121 User’s Guide

12 VDC, 1 A external power supply 70-055-01

Rubber feet

Windows-based control software


Specifications, Parts, and Accessories, cont’d

Extron’s WarrantyExtron Electronics warrants this product against defects in materials and workmanship for a period of three years from the date of purchase. In the event of malfunction during the warranty period attributable directly to faulty workmanship and/or materials, Extron Electronics will, at its option, repair or replace said products or components, to whatever extent it shall deem necessary to restore said product to proper operating condition, provided that it is returned within the warranty period, with proof of purchase and description of malfunction to:

USA, Canada, South America, and Central America:Extron USA1001 East Ball RoadAnaheim, CA 92805U.S.A.

Europe, Africa, and the Middle East:Extron EuropeHanzeboulevard 103825 PH AmersfoortThe Netherlands

Asia:Extron Asia135 Joo Seng Road #04-01PM Industrial Bldg.Singapore 368363Singapore

Japan:Extron JapanKyodo Building, 16 IchibanchoChiyoda-ku, Tokyo 102-0082Japan

China:Extron China686 Ronghua Road Songjiang DistrictShanghai 201611China

Middle East:Extron Middle EastDubai Airport Free ZoneF12, PO Box 293666United Arab Emirates, Dubai

This Limited Warranty does not apply if the fault has been caused by misuse, improper handling care, electrical or mechanical abuse, abnormal operating conditions or non-Extron authorized modifi cation to the product.

If it has been determined that the product is defective, please call Extron and ask for an Applications Engineer at (714) 491-1500 (USA), 31.33.453.4040 (Europe), 65.6383.4400 (Asia), or 81.3.3511.7655 (Japan) to receive an RA# (Return Authorization number). This will begin the repair process as quickly as possible.

Units must be returned insured, with shipping charges prepaid. If not insured, you assume the risk of loss or damage during shipment. Returned units must include the serial number and a description of the problem, as well as the name of the person to contact in case there are any questions.

Extron Electronics makes no further warranties either expressed or implied with respect to the product and its quality, performance, merchantability, or fi tness for any particular use. In no event will Extron Electronics be liable for direct, indirect, or consequential damages resulting from any defect in this product even if Extron Electronics has been advised of such damage.

Please note that laws vary from state to state and country to country, and that some provisions of this warranty may not apply to you.

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