Extron electronics MVC 121 User manual

User’s Guide

Mic/Line Mixer and Volume Controller

68-793-01 Rev. C

02 09

MVC 121

Precautions

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.

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.

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.

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.

Safety Instructions • English

Consignes de Sécurité • Français

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.

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.

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.

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.

Instrucciones de seguridad • Español

i

ᅝܼ乏ⶹ•Ё᭛

䖭Ͼヺোᦤ⼎⫼᠋䆹䆒໛⫼᠋᠟ݠЁ

᳝䞡㽕ⱘ᪡԰੠㓈ᡸ䇈ᯢǄ

䖭Ͼヺো䄺ਞ⫼᠋䆹䆒໛ᴎ໇ݙ᳝

䴆ⱘॅ䰽⬉य़ˈ᳝㾺⬉ॅ䰽Ǆ

⊼ᛣ

䯙䇏䇈ᯢк• 䑩ㅸỀ䑩嬦嫿⡈↎⼆枼敆嬼⶷䍇夤ㆁ㙊

⫊₩⏍Ề䑩嬵㕏ɿ

ֱᄬ䇈ᯢк• 䑩ㅸⷕ἞⪙⫊₩嬵㕏ᶧḦ⡈⭇㚦Ề䑩ɿ

䙉ᅜ䄺ਞ• 䑩ㅸⷕ徶⫉ᷨ␂⏍䑩ㅸ㉈⊘ᵋ䗅ㆁ㙊⫊₩

⏍㐎ẝ嬵㕏ɿ

䙓ܡ䗑ࡴ• ᵎ壂Ề䑩嬦ᷨ␂⋃⒇㯢㙊㋩劑䗅⴦₸ㅗ弾

⇡嫿⡈澤Ḧ忀₎⊲斪ɿ

䄺ਞ

⬉⑤• 嬦嫿⡈⌫倾Ề䑩ᷨ␂ᵋ㝈㕏䗅䑶㷑ɿ嫿⡈⼆枼

Ề䑩㙊♱一䗅Ờ䑶䰼丠Ờ䑶ɿ䩭ᵊ㚢一澠♱一澡㕰

⫊₩嫿㓾澤ᵎ倾ᵎ䑩ㅗ崴弈ɿ

ᢨᥝ⬉⑤• ᵻ⫊₩♱ḏ嫿⡈㈕㋊䑶㷑澤嬸㈕㋊ㆁ㙊嫿

⡈⍏ㅗ㞍暣䑶㷑䗅䑶㷑一澤ㅗḼẖ㋦ⅱⵃ䑶䰼丠䗅

䑶㷑一ɿ

⬉⑤㒓ֱᡸ• ⣦Ⓟⵄ一澤忀₎埬嵪嵐澤ㅗ愎䆪㉥⋌ɿ

㓈ᡸ•ㆁ㙊丵Ἧ⼆枼䑲嫥嬂䗅丵Ἧ᷻⎙弜垍ɿ嫿⡈⃆

怩㯢㙊䑩ㅸ⌰Ḧ㘵㊣䗅昷ḷɿᵻ忀₎℻䋱大䑶⊲斪

ᵎ壂儫ⴲ嬖☿㆔⹁嫿⡈䘗⪑丵Ἧ嬦嫿⡈ɿ

䗮亢ᄨ• 㙊ᷜ嫿⡈㙻⠴ᵋ㙊彛栏㤾ㅗ⪕澤⫄ḭ㕰䑩㚦

敳㪣㙻⃆㒐だ₄ḷ弈䀮ɿᵎ壂䑩Ḽẖᵝ壀㉢Ẑ彛

栏⪕ɿ

䫖⬉∴• ᵎ㪤䞯䗅㘵㊣䑶㮡ṛ㙊䅇㿹䗅⊲斪ɿ⼆枼Ề䑩

ᵏ⋃⫷㋩劑䗅䘹⍍ㅗ䘹弒⛌⌸䗅䑶㮡ɿ㉊䂨䑠ᷨ⋃

䗅⸻嫯⡅䍇ⷠ⹄䑶㮡ɿ

FCC Class A Notice

This equipment has been tested and found to comply with the limits for a

Class A digital device, pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference when the

equipment is operated in a commercial environment. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in

accordance with the instruction manual, may cause harmful interference to radio

communications. Operation of this equipment in a residential area is likely to

cause harmful interference, in which case the user will be required to correct the

interference at his own expense.

N This unit was tested with shielded cables on the peripheral devices. Shielded

cables must be used with the unit to ensure compliance.

MVC 121 • Quick Start Guide

Quick Start Guide — MVC 121

QS-1

Step 1

Disconnect all power prior to installing the MVC 121.

Step 2

Mount the MVC (if applicable) or affix the rubber feet to the bottom

of the MVC for tabletop use. The MVC can be mounted in a rack

shelf, under furniture, or to a projector mount. See chapter 2,

“Installation and Operation”, for details.

M

IX

E

R

/

V

O

L

U

M

E

C

O

N

T

R

O

L

E

R

M

I

C

1

VOL

M

I

C

2

M

A

I

N

3

M

A

S

T

E

R

Under furniture

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

Use 2 mounting holes

on opposite corners

VersaTools Rack Shelf

1/4 Rack Width

False Front Face Plate

D

I

S

T

R

I

B

U

T

I

O

N

A

M

P

L

I

F

I

E

R

D

I

S

T

R

I

B

U

T

I

O

N

A

M

P

L

I

F

I

E

R

M

I

X

E

R

/

V

O

L

U

M

E

C

O

N

T

R

O

L

E

R

M

I

C

1

VOL

M

I

C

2

M

A

I

N

3

M

A

S

T

E

R

Rack shelf mounting

Projector

PMK 100

MVC 121

ON

INPUTS

O

U

T

P

U

T

S

L

E

V

E

L

4

8

V

ON

OFF

MAIN 3

LINE

MIC

RS-232

MUTE

TxRx

POWER

12V

0.5A MAX

L

1

2

R

3

1

2

3

4

1

2

1

2

MIXER/VOLUME

CONTROLLER

FIXED

L

R

MIC 1

MIC 2

VARIABLE

L

R

Mounting

Bolt

To a projector mount

Quick Start Guide — MVC 121, cont’d

MVC 121 • Quick Start GuideQS-2

Step 3

Attach the cables and set the DIP switches.

MVC 121

ON

INPUTS

OUTPUTS

LEVEL

48V

ON

OFF

MAIN 3

LINE

MIC

RS-232

MUTE

Tx Rx

POWER

12V

0.5A MAX

L

1

2

R

3

1

2

3

4

1

2

1

2

MIXER/VOLUME

CONTROLLER

FIXED

L

R

MIC 1

MIC 2

VARIABLE

L

R

7 81 2 3 5

4 6

1

Power connector — Connect the 12 VDC external power

supply.

CAUTION

When connecting the power supply, voltage

polarity is extremely important. Applying power

with incorrect voltage polarity could damage the

power supply and the MVC 121.

2

Mic input DIP switch — Mic 1 and Mic 2 inputs are controlled

via 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 so

may 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 phantom

power is disabled regardless of its DIP switch position.

3

Mic 1 and Mic 2 input connector — Up to two mono

microphones, balanced and/or unbalanced, may be connected.

4

Main 3 line level input connector — Connect a line level audio

source.

MVC 121 • Quick Start Guide

5

Variable output connector — The balanced/unbalanced stereo

output is controlled by the Master volume control knob on the

front panel.

6

Fixed output connector — The balanced/unbalanced stereo

output 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 system

or PC) for two-way RS-232 communication.

8

Mute connector — Connect a contact closure device to mute

the inputs. See “Contact Closure Mute” in chapter 3.

Step 4

Adjust the front panel volume controls. See chapter 2, “Installation

and Operation”.

MIXER/VOLUME CONTROLLER

MVC 121

MIC 1

VOL

MIC 2 MAIN 3 MASTER

2

1

3

4

5

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 to

control 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 ....................................................... 2-2

Tabletop use ........................................................................... 2-2

UL rack mounting guidelines ................................................. 2-2

Rack mounting ....................................................................... 2-3

Furniture or projector mounting ........................................... 2-4

Furniture mounting .......................................................... 2-4

Projector mounting .......................................................... 2-5

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

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

Front Panel Features .......................................................... 2-12

Turning channels on/off .......................................................2-13

On/off status LEDs ...............................................................2-14

Mute/unmute channel .........................................................2-14

Front panel security lockout (executive mode) ..................2-14

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

RS-232 Programmer’s Guide ............................................ 3-2

Host-to-MVC communications ............................................... 3-2

MVC-initiated messages ........................................................ 3-2

Error responses ...................................................................... 3-2

Using the command/response table ..................................... 3-3

Command/response table ..................................................... 3-5

Windows-based Program Control .................................. 3-9

Installing the software ..........................................................3-9

Using the software ..............................................................3-10

Setting output volume range limits

................................ 3-10

Using the help system ......................................................... 3-12

Updating the firmware ....................................................... 3-12

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

Appendix A • Specifications, Part Numbers, and

Accessories........................................................................................ 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. C

02 09

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

MVC 121 Mic/Line Mixer

1

Chapter One

Introduction

About the MVC 121

Features

MVC 121 • Introduction

Introduction

About the MVC 121

The Extron MVC 121 is an audio mixer and volume controller in

the Extron VersaTools

™

product line that mixes up to two mic

inputs (mono, balanced/unbalanced) with one main line level

input (stereo, balanced/unbalanced). Each mic input and the

main line level input have their own gain control knobs, and the

mixed output also features a volume control knob.

Volume adjustment interval varies with the speed of knob

rotation, i.e., turning the knob slowly increments the volume in

smaller steps (0.5 dB), and turning the knob quickly increments

the volume in larger steps (2.5 dB).

Two sets of outputs include a fixed output that is independent

from volume control, and a variable output that is volume

adjustable. All inputs and outputs are via 3.5 mm captive screw

connectors, and the volume settings are indicated by four LEDs.

The MVC offers RS-232 control of input gain/attenuation, and

control of output volume. RS-232 control also includes the

capability to turn the inputs and output on/off. The latest

firmware can be uploaded using RS-232 and the Extron control

program for Windows

®

.

Features

Furniture, rack, and projector mountability — The Extron

MVC 121 can be mounted under a desk or other

furniture, or mounted on a projector lift with optional

brackets. Alternatively, it can be rack mounted on an

optional rack shelf.

Microphone inputs — Built-in switchable microphone amplifier

with 48 V phantom power and separate level setting for

each microphone.

Front panel security lockout (executive mode) — The volume

settings for the inputs and the output can be protected

from unauthorized changes by enabling the executive

mode, although the volume settings can still be displayed

by the LEDs when the volume control knobs are turned.

Stand-alone volume controller — The MVC 121 can operate as

a volume controller for the main line level input with

both mic inputs turned off.

RS-232 control — Allows remote control of the MVC using the

Extron Simple Instruction Set

™

(SIS

™

), the Extron control

software for Windows, or other remote control system.

1-2

MVC 121 Mic/Line Mixer

2

Chapter 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 121

The one rack unit high, quarter rack wide MVC can be set on a

table, mounted on a rack shelf, mounted under a desk or

tabletop, or mounted on a projector bracket.

Tabletop use

Each MVC comes with rubber feet (not installed). For tabletop

use, attach a self-adhesive rubber foot to each corner of the

bottom of the unit.

UL rack mounting guidelines

The following Underwriters Laboratories (UL) guidelines

pertain to the safe installation of the MVC 121 in a rack.

1. Elevated operating ambient temperature — If installed in

a closed or multi-unit rack assembly, the operating

ambient temperature of the rack environment may be

greater than room ambient temperature. Therefore,

install the MVC in an environment compatible with the

maximum ambient temperature (Tma = +122 °F, +50 °C)

specified by Extron.

2. Reduced air flow — Install the equipment in a rack so that

the amount of air flow required for safe operation of the

equipment is not compromised.

3. Mechanical loading — Mount the equipment in the rack

so that a hazardous condition is not achieved due to

uneven mechanical loading.

4. Circuit overloading — Connect the equipment to the

supply circuit and consider the effect that circuit

overloading 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) — Maintain reliable

grounding of rack-mounted equipment. Pay particular

attention to supply connections other than direct

connections to the branch circuit (e.g. use of power strips).

2-2

MVC 121 • Installation and Operation

Rack mounting

For optional rack mounting, do not install the rubber feet.

Mount the MVC on a VersaTools

®

19" 1U rack shelf (Extron

RSF 123, part #60-190-20; Extron RSB 123, part #60-604-20), or a

standard Universal 1U or Basic rack shelf (Extron RSU 129, part

#60-190-01; Extron RSB 129 or #60-604-01). On the standard rack

shelf, the MVC mounts in one of four locations to the rear of the

rack or in one of four locations to the front of the rack.

1. If rubber feet were previously installed on the bottom of

the 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 MVC

to the shelf.

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

Use 2 mounting holes

on opposite corners

VersaTools Rack Shelf

1/4 Rack Width

False Front Face Plate

DISTRIBUTION AMPLIFIER

MIXER/VOLUME CO

NTROLLER

M

IC

1

VOL

M

IC

2

M

A

IN

3

M

A

S

T

E

R

Mounting the MVC on a VersaTools rack shelf

2-3

MVC 121 • Installation and Operation

Installation and Operation, cont’d

2-4

M

I

X

E

R

/

V

O

L

U

M

E

C

O

N

T

R

O

L

E

R

MIC

1

VOL

MIC 2

MA

IN 3

MASTER

D

I

S

T

R

I

B

U

T

I

O

N

A

M

P

L

I

F

I

E

R

M

D

A

S

E

R

IE

S

D

I

S

T

R

I

B

U

T

I

O

N

A

M

P

L

I

F

I

E

R

A

/

V S

W

IT

C

HE

R

A

U

T

O

S

W

I

C

H

M

O

D

E

N

O

R

M

A

L

A

U

T

O

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 mounting

Furniture mount or projector mount the MVC using the

optional mounting kit (Extron MBU 123, part #70-212-01,

furniture; or Extron PMK 100, part #70-217-01, projector) as

follows:

1. Attach the mounting brackets to the MVC with the

machine screws provided.

2. If feet were previously installed on the bottom of the

MVC, remove them.

Furniture mounting

3a. Hold the MVC with the attached brackets against the

underside of the table or other furniture. Mark the

location of the screw holes of the bracket on the mounting

surface.

4a. Drill 3/32" (2 mm) diameter pilot holes, 1/4" (6.3 mm)

deep in the mounting surface at the marked screw

locations.

5a. Insert #8 wood screws into the four pilot holes. Tighten

each screw into the mounting surface until just less than

1/4" of the screw head protrudes.

6a. Align the mounting screws with the slots in the brackets

and place the MVC against the surface, with the screws

through the bracket slots. See the following illustration.

MVC 121 • Installation and Operation

M

I

X

E

R

/

V

O

L

U

M

E

C

O

N

T

R

O

L

E

R

M

IC

1

VOL

M

IC

2

M

A

IN

3

M

A

S

T

E

R

Mounting the MVC to furniture

7a. Slide the MVC slightly forward or back, then tighten all

four screws to secure the MVC in place.

Projector mounting

3b. Secure the MVC to a projector mount or other surface by

inserting the mounting bolt through the bracket’s slotted

hole, as shown below.

Projector

PMK 100

MVC 121

ON

INPUTS

O

U

T

P

U

T

S

L

E

V

E

L

4

8

V

ON

OFF

MAIN 3

LINE

MIC

RS-232

MUTE

TxRx

POWER

12V

0.5A MAX

L

1

2

R

3

1

2

3

4

1

2

1

2

MIXER/VOLUME

CONTROLLER

FIXED

L

R

MIC 1

MIC 2

VARIABLE

L

R

Mounting

Bolt

Mounting the MVC to a projector mount

2-5

MVC 121 • Installation and Operation

Installation and Operation, cont’d

2-6

Application Diagram

MVC 121

O

N

I

N

P

U

T

S

OUTPUTS

LEVEL

48V

O

N

O

F

M

A

I

N

3

L

I

N

E

M

I

C

R

S

-

2

3

2

M

U

T

E

T

x

R

x

P

O

W

E

R

12V

0.5A

MA

X

L

1

2

R

3

1

2

3

4

1

2

1

2

M

IXER/VO

LUM

E

CO

NTR

OLLER

F

I

X

E

D

L

R

M

IC

1

M

IC

2

V

A

R

IA

B

L

E

L

R

Extron

SW 6AV

Switcher

Extron

MVC 121

Mixer/Volume

Controller

10

0

-2

4

0

V

0

.

3

A

5

0

-6

0

H

z

R

E

M

O

T

E

L

R

L

R

L

R

L

R

L

R

LR

L

R

L

R

IN

P

U

T

S

OU

T

PU

T

S

5

2

1

3

4

A

6

B

S

W

6

A

V

IN

P

U

T

S

O

U

T

P

U

T

S

YN

C

IN

1

2

3

4

5

6

A

B

OUT

L

IS

T

E

D

1

T

2

3

I

.T

.

E

.

C

U

S

Audio Amplifier

Audio Recorder

RS-232 Control

Wireless

Microphone

Contact Closure

Mute (AAP)

MVC 121 • Installation and Operation

Rear Panel Features and Cabling

MVC 121

ON

INPUTS

OUTPUTS

LEVEL

48V

ON

OFF

MAIN 3

LINE

MIC

RS-232

MUTE

Tx Rx

POWER

12V

0.5A MAX

L

1

2

R

3

1

2

3

4

1

2

1

2

MIXER/VOLUME

CONTROLLER

FIXED

L

R

MIC 1

MIC 2

VARIABLE

L

R

7 81 2 3 5

4 6

1

Power connector — Connect the included 12 VDC external

power supply into the 2-pole 3.5 mm captive screw connector.

Be careful to observe the correct polarity.

Orange Captive Screw

Connector

Tie Wrap

Power Supply

Output Cord

Ridges

Smooth

AA

SECTION A–A

CAUTION

When connecting the power supply, voltage

polarity is extremely important. Applying power

with incorrect voltage polarity could damage the

power supply and the MVC 121. Identify the

power cord negative (ground) lead by the ridges on

the side of the cord or a black heat shrink wrapping

around it.

The two power cord wires must be kept separate

while the power supply is plugged in. Remove

power before wiring.

To verify the polarity before connection, check the no load

power supply output with a voltmeter.

CAUTION

The length of the exposed (stripped) copper wires is

important. The ideal length is 5/16” (7 mm).

Longer bare wires can short together. Shorter

wires are not as secure in the direct insertion

connectors and could be pulled out.

2-7

MVC 121 • Installation and Operation

Installation and Operation, cont’d

2-8

Use the supplied tie-wrap to strap the power cord to the

extended tail of the connector.

Your MVC 121 may have shipped with a blue captive

screw connector. This blue connector can be plugged

into either a blue or an orange power receptacle.

The ideal length of exposed (stripped) copper wire

for the blue connector is 3/16" (5 mm).

The blue connector does not have the extended tail or the

included tie-wrap.

Do not tin the power supply leads before installing in the

direct insertion connector. Tinned wires are not as

secure in the connectors and could be pulled out.

After making any adjustments to the MVC 121, either

via the front panel controls, SIS commands, or the

Extron Audio Products Control Program, wait at least

10 seconds after making those changes before

disconnecting power to the MVC 121. Failure to

observe the 10-second timeout may result in those

adjustments not being saved.

2

Mic input DIP switch— Mic 1 and Mic 2 inputs are controlled

via a DIP switch.

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

a. Wireless mic: Set the mic’s DIP

switch to the Line position (On).

b. Wired mic: Set the mic’s DIP switch

to the Mic position (Off).

2. Set the 48V phantom power position according to

microphone type:

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

position.

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

position.

Condenser microphones require power. Dynamic

microphones do not require power.

When a mic’s input level DIP switch is set to “line”

level, that input’s 48V phantom power is disabled

regardless of the “48V” phantom power DIP switch

setting of that input.

ON

LEVEL

48V

ON

OFF

LINE

MIC

1

2

3

4

1

2

1

2

Page is loading ...

Extron electronics MVC 121 User manual

Extron electronics MVC 121 User manual

Related papers

Other documents