Extron MVC 121 Plus User manual

User Guide

MVC 121 Plus

Audio Products

Mixers and Processors

Three Input Stereo Mixer with DSP

68-1937-01 Rev. D

10 19

Safety Instructions

Safety Instructions • English

WARNING: This symbol, , when used on the product, is intended to

alert the user of the presence of uninsulated dangerous voltage within the

product’s enclosure that may present a risk of electric shock.

ATTENTION: This symbol, , when used on the product, is intended

to alert the user of important operating and maintenance (servicing)

instructions in the literature provided with the equipment.

For information on safety guidelines, regulatory compliances, EMI/EMF

compatibility, accessibility, and related topics, see the Extron Safety and

Regulatory Compliance Guide, part number 68-290-01, on the Extron

website, www.extron.com.

Sicherheitsanweisungen • Deutsch

WARNUNG: Dieses Symbol auf dem Produkt soll den Benutzer darauf

aufmerksam machen, dass im Inneren des Gehäuses dieses Produktes

gefährliche Spannungen herrschen, die nicht isoliert sind und die einen

elektrischen Schlag verursachen können.

VORSICHT: Dieses Symbol auf dem Produkt soll dem Benutzer in

der im Lieferumfang enthaltenen Dokumentation besonders wichtige

Hinweise zur Bedienung und Wartung (Instandhaltung) geben.

Weitere Informationen über die Sicherheitsrichtlinien, Produkthandhabung,

EMI/EMF-Kompatibilität, Zugänglichkeit und verwandte Themen finden Sie in

den Extron-Richtlinien für Sicherheit und Handhabung (Artikelnummer

68-290-01) auf der Extron-Website, www.extron.com.

Instrucciones de seguridad • Español

ADVERTENCIA: Este símbolo, , cuando se utiliza en el producto,

avisa al usuario de la presencia de voltaje peligroso sin aislar dentro del

producto, lo que puede representar un riesgo de descarga eléctrica.

ATENCIÓN: Este símbolo, , cuando se utiliza en el producto, avisa

al usuario de la presencia de importantes instrucciones de uso y

mantenimiento recogidas en la documentación proporcionada con el

equipo.

Para obtener información sobre directrices de seguridad, cumplimiento

de normativas, compatibilidad electromagnética, accesibilidad y temas

relacionados, consulte la Guía de cumplimiento de normativas y seguridad

de Extron, referencia 68-290-01, en el sitio Web de Extron, www.extron.com.

Instructions de sécurité • Français

AVERTISSEMENT : Ce pictogramme, , lorsqu’il est utilisé sur le

produit, signale à l’utilisateur la présence à l’intérieur du boîtier du

produit d’une tension électrique dangereuse susceptible de provoquer

un choc électrique.

ATTENTION : Ce pictogramme, , lorsqu’il est utilisé sur le produit,

signale à l’utilisateur des instructions d’utilisation ou de maintenance

importantes qui se trouvent dans la documentation fournie avec le

matériel.

Pour en savoir plus sur les règles de sécurité, la conformité à la

réglementation, la compatibilité EMI/EMF, l’accessibilité, et autres sujets

connexes, lisez les informations de sécurité et de conformité Extron, réf.

68-290-01, sur le site Extron, www.extron.com.

Istruzioni di sicurezza • Italiano

AVVERTENZA: Il simbolo, , se usato sul prodotto, serve ad

avvertire l’utente della presenza di tensione non isolata pericolosa

all’interno del contenitore del prodotto che può costituire un rischio di

scosse elettriche.

ATTENTZIONE: Il simbolo, , se usato sul prodotto, serve ad avvertire

l’utente della presenza di importanti istruzioni di funzionamento e

manutenzione nella documentazione fornita con l’apparecchio.

Per informazioni su parametri di sicurezza, conformità alle normative,

compatibilità EMI/EMF, accessibilità e argomenti simili, fare riferimento

alla Guida alla conformità normativa e di sicurezza di Extron, cod. articolo

68-290-01, sul sito web di Extron, www.extron.com.

Instrukcje bezpieczeństwa • Polska

OSTRZEŻENIE: Ten symbol, , gdy używany na produkt, ma na celu

poinformować użytkownika o obecności izolowanego i niebezpiecznego

napięcia wewnątrz obudowy produktu, który może stanowić zagrożenie

porażenia prądem elektrycznym.

UWAGI: Ten symbol, , gdy używany na produkt, jest przeznaczony do

ostrzegania użytkownika ważne operacyjne oraz instrukcje konserwacji

(obsługi) w literaturze, wyposażone w sprzęt.

Informacji na temat wytycznych w sprawie bezpieczeństwa, regulacji

wzajemnej zgodności, zgodność EMI/EMF, dostępności i Tematy pokrewne,

zobacz Extron bezpieczeństwa i regulacyjnego zgodności przewodnik, część

numer 68-290-01, na stronie internetowej Extron, www.extron.com.

Инструкция по технике безопасности • Русский

ПРЕДУПРЕЖДЕНИЕ: Данный символ, , если указан

на продукте, предупреждает пользователя о наличии

неизолированного опасного напряжения внутри корпуса

продукта, которое может привести к поражению

электрическим током.

ВНИМАНИЕ: Данный символ, , если указан на продукте,

предупреждает пользователя о наличии важных инструкций

по эксплуатации и обслуживанию в руководстве,

прилагаемом к данному оборудованию.

Для получения информации о правилах техники безопасности,

соблюдении нормативных требований, электромагнитной

совместимости (ЭМП/ЭДС), возможности доступа и других

вопросах см. руководство по безопасности и соблюдению

нормативных требований Extron на сайте Extron: ,

www.extron.com, номер по каталогу - 68-290-01.

安全说明 • 简体中文

警告：产品上的这个标志意在警告用户该产品机壳内有暴露的危险电压，

有触电危险。

注意：产品上的这个标志意在提示用户设备随附的用户手册中有

重要的操作和维护(维修）说明。

关于我们产品的安全指南、遵循的规范、EMI/EMF 的兼容性、无障碍

使用的特性等相关内容，敬请访问 Extron 网站 , www.extron.com，参见

Extron 安全规范指南，产品编号 68-290-01。

안전 지침 • 한국어

경고: 이 기호 가 제품에 사용될 경우, 제품의 인클로저 내에 있는

접지되지 않은 위험한 전류로 인해 사용자가 감전될 위험이 있음을

경고합니다.

주의: 이 기호 가 제품에 사용될 경우, 장비와 함께 제공된 책자에 나와

있는 주요 운영 및 유지보수(정비) 지침을 경고합니다.

안전 가이드라인, 규제 준수, EMI/EMF 호환성, 접근성, 그리고 관련 항목에

대한 자세한 내용은 Extron 웹 사이트(www.extron.com)의 Extron 안전 및

규제 준수 안내서, 68-290-01 조항을 참조하십시오.

安全記事 • 繁體中文

警告: 若產品上使用此符號，是為了提醒使用者，產品機殼內存在著

可能會導致觸電之風險的未絕緣危險電壓。

注意若產品上使用此符號，是為了提醒使用者，設備隨附的用戶手冊中有

重要的操作和維護（維修）説明。

有關安全性指導方針、法規遵守、EMI/EMF 相容性、存取範圍和相關主題的詳細資

訊，請瀏覽 Extron 網站：www.extron.com，然後參閱《Extron 安全性與法規

遵守手冊》，準則編號 68-290-01。

安全上のご注意 • 日本語

警告: この記号が製品上に表示されている場合は、筐体内に絶縁されて

いない高電圧が流れ、感電の危険があることを示しています。

注意:この記号が製品上に表示されている場合は、本機の取扱説明書に

記載されている重要な操作と保守(整備)の指示についてユーザーの注意

を喚起するものです。

安全上のご注意、法規厳守、EMI/EMF適合性、その他の関連項目に

ついては、エクストロンのウェブサイト www.extron.com より『 Extron Safety

and Regulatory Compliance Guide』 ( P/N 68-290-01) をご覧ください。

Copyright

Trademarks

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

The following registered trademarks (

®

), registered service marks (

SM

), and trademarks (

TM

) are the property of RGBSystems, Inc. or

ExtronElectronics (see the current list of trademarks on the Terms of Use page at www.extron.com):

Registered Trademarks

(

®

)

Extron, Cable Cubby, ControlScript, CrossPoint, DTP, eBUS, EDID Manager, EDID Minder, Flat Field, FlexOS, Glitch Free. Global

Configurator, GlobalScripter, GlobalViewer, Hideaway, HyperLane, IPIntercom, IPLink, KeyMinder, LinkLicense, LockIt, MediaLink,

MediaPort, NetPA, PlenumVault, PoleVault, PowerCage, PURE3, Quantum, Show Me, SoundField, SpeedMount, SpeedSwitch,

StudioStation, SystemINTEGRATOR, TeamWork, TouchLink, V-Lock, VideoLounge, VN-Matrix, VoiceLift, WallVault, WindoWall, XPA, XTP,

XTPSystems, and ZipClip

Registered Service Mark

(SM)

: S3 Service Support Solutions

Trademarks

(

™

)

AAP, AFL (Accu-RATEFrameLock), ADSP(Advanced Digital Sync Processing), Auto-Image, AVEdge, CableCover, CDRS(ClassD

Ripple Suppression), Codec Connect, DDSP(Digital Display Sync Processing), DMI (DynamicMotionInterpolation), DriverConfigurator,

DSPConfigurator, DSVP(Digital Sync Validation Processing), eLink, EQIP, Everlast, FastBite, Flex55, FOX, FOXBOX, IP Intercom

HelpDesk, MAAP, MicroDigital, Opti-Torque, PendantConnect, ProDSP, QS-FPC(QuickSwitch Front Panel Controller), RoomAgent,

Scope-Trigger, ShareLink, SIS, SimpleInstructionSet, Skew-Free, SpeedNav, Triple-Action Switching, True4K, Vector 4K , WebShare,

XTRA, and ZipCaddy

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. The ClassA limits provide reasonable

protection against harmful interference when the equipment is operated in a commercial

environment. This equipment generates, uses, and can radiate radio frequency energy

and, if not installed and used in accordance with the instruction manual, may cause

harmful interference to radio communications. Operation of this equipment in a

residential area is likely to cause interference. This interference must be corrected at the

expense of the user.

NOTE: For more information on safety guidelines, regulatory compliances, EMI/

EMF compatibility, accessibility, and related topics, see the Extron Safety and

Regulatory Compliance Guide on the Extron website.

VCCI-A Notice

この装置は、クラスＡ情報技術装置です。この装置を家庭環境で使用すると、電波妨害を引き

起こすことがあります。その場合には使用者が適切な対策を講ずるよう要求されることがあります。

ＶＣＣI－Ａ

Conventions Used in this Guide

Notifications

The following notifications are used in this guide:

ATTENTION:

• Risk of property damage.

• Risque de dommages matériels.

NOTE: A note draws attention to important information.

Software Commands

Commands are written in the fonts shown here:

^AR Merge Scene,,0p1 scene 1,1 ^B 51 ^W^C.0

[01] R 0004 00300 00400 00800 00600 [02] 35 [17] [03]

E X! *X1&* X2)* X2#* X2! CE}

NOTE: For commands and examples of computer or device responses used in

this guide, the character “0” is used for the number zero and “O” is the capital

letter “o.”

Computer responses and directory paths that do not have variables are written in the

font shown here:

Reply from 208.132.180.48: bytes=32 times=2ms TTL=32

C:\Program Files\Extron

Variables are written in slanted form as shown here:

ping xxx.xxx.xxx.xxx —t

SOH R Data STX Command ETB ETX

Selectable items, such as menu names, menu options, buttons, tabs, and field names

are written in the font shown here:

From the File menu, select New.

Click the OK button.

Specifications Availability

Product specifications are available on the Extron website, www.extron.com.

Extron Glossary of Terms

A glossary of terms is available at http://www.extron.com/technology/glossary.

aspx.

Contents

Introduction ...............................................1

About This Guide ................................................. 1

MVC121Plus Description ................................... 1

MVC121Plus Features ....................................... 1

MVC121Plus Application Diagram ..................... 2

Installation .................................................3

Rear Panel Features ............................................ 3

Front Panel Features ............................................ 8

Operation .................................................11

MVC121Plus Operation ................................... 11

Rear Panel Operation..................................... 11

Front Panel Operation .................................... 11

Power Cycle .................................................. 12

Firmware Updates ......................................... 12

Reset Actuator and LED ................................ 12

Digital Input Port ............................................ 13

DSP Processing and Signal Flow ....................... 15

Mic/Line Input Signal Chain ........................... 16

Filter Processor Block ........................................ 17

Filter .................................................................. 17

Mixer ................................................................. 22

Output Channels ............................................... 26

Volume .......................................................... 26

Gain .............................................................. 27

SIS Programming and Control ................. 28

Connection Options ........................................... 28

USB Port Details: ........................................... 28

MVC121Plus-initiated Messages ................. 29

Using the Command/Response Tables .......... 29

Error Responses ............................................ 30

Command/Response Table for Basic SIS

Commands ...................................................... 30

Symbol Deﬁnitions ......................................... 30

Command/Response Table for Basic

MVC121Plus SIS Commands ..................... 31

Command/Response Tables for DSP SIS

Commands ...................................................... 34

OID ................................................................ 34

Error Responses ............................................ 35

Symbol Deﬁnitions ......................................... 35

Command/Response Table for

MVC121Plus DSP SIS Commands ............. 36

Software Control ...................................... 38

Software Control................................................ 38

Windows-based Program Control ...................... 38

Installing the DSP Conﬁgurator Program ........ 39

Install the USB Driver ..................................... 40

DSP Conﬁgurator Program ................................ 41

Starting the Program ..................................... 41

Using the Program ......................................... 42

Help .............................................................. 42

Emulate Mode vs. Live Mode ......................... 43

Synchronizing: Pull vs. Push .......................... 43

Selecting Live Mode and Pushing or Pulling

a Conﬁguration ............................................. 44

Reference ................................................47

Mounting ........................................................... 47

Tabletop Use ................................................. 47

UL Rack Mounting Guidelines ........................ 47

Rack Mounting .............................................. 48

Furniture Mounting......................................... 48

Firmware Loader ............................................... 49

MVC121Plus Hardware Reset Modes .............. 51

viiMVC 121 Plus • Contents

MVC 121 Plus • Contents viii

MVC 121 Plus • Introduction 1

Introduction

About This Guide

This guide contains information about the Extron MVC121Plus audio mixer and volume

controller with DSP. Unless otherwise specified, references in this guide to the “mixer” or

“MVC” relate to the features or operation of the MVC121Plus.

MVC121Plus Description

The MVC121Plus is an audio mixer and volume controller that will mix up to two

mic/line inputs (mono, balanced or unbalanced) with one line level input (stereo, balanced,

or unbalanced). All audio input signals are converted from analog to digital prior to

processing or routing. Each mic input and the stereo line level input have their own gain

control adjustment screws, and the mixed output also features a volume control knob.

The MVC offers gain, Parametric EQ filter, and tone processing with quick and intuitive

configuration using the DSP Configurator software. The DSP built into the MVC provides

wide dynamic range and utilizes 24-bit audio converters with 48 kHz sampling to maintain

audio signal transparency.

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 gain/volume settings are indicated by an eight segment LED

ladder.

Rotating the gain adjustment screw clockwise increases gain, rotating the screw

counterclockwise decreases gain. Gain values adjust in 1dB increments.

Volume adjustment interval varies with knob rotation, that is, turning the knob clockwise

increases the volume and turning the knob counterclockwise decreases the volume. The

volume is increased more rapidly at lower volume settings.

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

latest firmware can be uploaded using RS-232 or USB and the Extron Firmware Loader

program for Windows

®

.

MVC121Plus Features

• Emulate and live modes for configuration — The DSP Configurator control program

can be used in emulate mode to create an MVC121Plus configuration offline. The

modifications can be saved and applied to the unit when a connection is established. In

live mode, the changes are made directly to the unit.

• Two mic/line inputs and one line level input — Two mic/line (mono, balanced or

unbalanced) inputs can mix with one line level (stereo, balanced or unbalanced) input.

• Fixed and variable outputs — The MVC includes a fixed output and a volume

adjustable variable output.

• Multi-function LED level indicator — Automatically displays the mix-point gain or

output volume setting for the front panel controls, and also functions as an output level

meter.

MVC 121 Plus • Introduction 2

• Fixed, low latency DSP processing — Input to output latency within the

MVC121Plus is fixed regardless of the number of active channels or processes. Fixed,

low latency processing keeps audio in sync with video, and prevents distractions to the

presenter resulting from delayed live audio.

• 48-volt phantom power for condenser microphones — 48 VDC phantom power is

available for mic inputs 1 and 2.

• Soft limits provide optimal adjustment range — The volume range for the variable

output and the gain range for the three mix points can be limited using the soft limits

to maintain optimal minimum and maximum levels when using external control. This

prevents operators from over or under-adjusting levels when using digital I/O or RS-232

control. The DSP Configurator software provides quick drag-and-drop adjustment of

soft limits.

• SpeedNav

™

keyboard navigation

— SpeedNav enables user-friendly, keyboard-based

navigation of the DSP Configurator software without the need for a mouse or touchpad.

Using keyboard navigation keys and shortcuts, the user can access any input or output,

mix-points, and all audio DSP tools. Using only the keyboard for software access can

help expedite audio system setup and commissioning.

• Rear panel RS-232 control port — The MVC121Plus can be configured using

Extron Simple Instruction Set (SIS

™

) commands from a PC using an RS-232 cable.

• Front panel USB control port — The MVC121Plus can be configured by Extron

Simple Instruction Set (SIS) commands from a PC using a USB cable.

MVC121Plus Application Diagram

100-240V 50-60Hz

I

N

P

U

T

VID

YC

Y

B-Y

R-Y

RGB

DVI

8

1

2

4

5

3

L

2

1

3

4 5

6

7

R

AUDIO INPUT

L

A

B

RS-232

R

OUTPUT

L

R

OUTPUT

RGB

Y, B-Y, R-Y

8

7

RGB

6

LISTED

1T23

I.T.E.

C

U S

CLASS 2 WIRING

STANDBY

L

(MONO)

R

LISTED

C US

70 V

OUTPUT

VOL/MUTE

50 mA10V

REMOTE

INPUTS

LIMITER/

PROTECT

SIGNAL

LEVEL

0

HPF

OFF

80 Hz

XPA 2001-70V

17TT

AUDIO/VIDEO

APPARATUS

100-240V 1.3A, 50-60Hz

2

1

+48V

MIC

I

N

P

U

T

S

1 2MIC/LINE

LINE 3

O

U

T

P

U

T

S

L

R

L

POWER

0.3A MAX

12V

RS-232

21

Tx

Rx

VARIABLE

FIXEDL R

DIGI IN

3

MIXER/VOLUME

CONTROLLER

MVC 121 Plus

1

3

1

4

2

3

1

4

2

3

1

4

2

3

100

LINK

ACT

COM

IR

INPUT

RELAY

TX

RX

R

IPL 250

®

ON

OFF

DISPLAY

MUTE

SCREEN

UP

SCREEN

DOWN

VCR

DVD

DOC

CAM

LAPTOP

PC

Extron

IN1508

Scaling Presentation

Switcher

Laptop

Desk Microphone

PC

PC Podcasting/

Recording Station

PC

TCP/IP

TouchLink

™

Control

System

Extron

SI 26CT

Two-way Ceiling

Speakers

Extron

XPA 2001-70V

Power

Amplier

Extron

MVC 121 Plus

Three Input Stereo

Mixer with DSP

Figure 1. MVC121Plus Application Diagram

1

MVC 121 Plus • Installation 3

Installation

This section describes the features and connectors for the MVC121Plus.

Rear Panel Features

2

1

+48V

MIC

12MIC/LINE

LINE 3

L

R

RL

POWER

0.3A MAX

12V

RS-232

VARIABLE

FIXEDLR

DIGI IN

MVC 121 Plus

Tx Rx 1 2 3

INPUTS OUTPUTS

RESET

1

12

2

23

3

36

6

67

7

78

8

4

45

5599

9

Figure 2. MVC121Plus Rear Panel

1

POWER connector — Connect the two pole, 3.5 mm captive screw connector from

the 12 VDC external power supply (provided) to this socket on the rear panel. Ensure

the connections have the correct polarity as shown in the illustration below:

DC Power

Input

POWER

12V

0.4A MA

X

Power Supply

Output Cord

SECTION A–

A

RidgesSmooth

AA

DC Power Cord

Captive Screw Connector

Ground

+12 VDC input

G

External Power Supply

(12 VDC, 0.5 A max.)

Ground all

Devices

Figure 3. Power Supply Connection

ATTENTION:

• Always use a power supply supplied or specified by Extron. Use of an

unauthorized power supply voids all regulatory compliance certification and may

cause damage to the supply and the end product.

• Utilisez toujours une source d’alimentation fournie ou recommandée par Extron.

L’utilisation d’une source d’alimentation non autorisée annule toute certification

de conformité réglementaire, et peut endommager la source d’alimentation et

l’unité.

2

3

MVC 121 Plus • Installation 4

ATTENTION:

• If not provided with a power supply, this product is intended to be supplied by

a UL Listed power source marked “Class 2” or “LPS” and rated output 12Vdc,

minimum 0.5 A.

• Si le produit n’est pas fourni avec une source d’alimentation, il doit être alimenté

par une source d’alimentation certifiée UL de classe 2 ou LPS, avec une tension

nominale 12 Vcc, 0.5 A minimum.

• Unless otherwise stated, the AC/DC adapters are not suitable for use in air

handling spaces or in wall cavities. The power supply is to be located within the

same vicinity as the Extron AV processing equipment in an ordinary location,

Pollution Degree 2, secured to the equipment rack within the dedicated closet,

podium or desk. Power over Ethernet (PoE) is intended for indoors use only. No

part of the network that uses PoE can be routed outdoors.

• Sauf mention contraire, les adaptateurs CA/CC ne conviennent pas à une

utilisation dans les espaces d’aération ou dans les cavités murales. La source

d’alimentation doit être placée à proximité de l’équipement Extron dans

un emplacement ordinaire soumis à un degré de pollution de catégorie II,

solidement fixé au rack d’équipement d’une baie technique, d’un pupitre, ou

d’un bureau. L’alimentation via Ethernet (PoE) est destinée à une utilisation en

intérieur uniquement. Elle doit être connectée seulement à des réseaux ou des

circuits qui ne sont pas routés au réseau ou au bâtiment extérieur.

• The installation must always be in accordance with the applicable provisions of

National Electrical Code ANSI/NFPA 70, article 725 and the Canadian Electrical

Code part 1, section 16. The power supply shall not be permanently fixed to

building structure or similar structure.

• Cette installation doit toujours être conforme aux dispositions applicables

du Code américain de l’électricité (National Electrical Code) ANSI/NFPA 70,

article 725, et du Code canadien de l’électricité, partie1, section16. La source

d’alimentation ne devra pas être fixée de façon permanente à la structure de

bâtiment ou à d’autres structures similaires.

NOTE: The length of the exposed wires in the stripping process is critical. The

ideal length is 3/16 inches (5 mm). Any longer and the exposed wires may touch,

causing a short circuit between them. Any shorter and the wires can be easily

pulled out even if tightly fastened by the captive screws.

Do not tin the wires. Tinned wire does not hold its shape and can become loose

over time.

2

MIC 1 and 2 +48 V phantom power LED indicators — The LED lights whenever the

corresponding mic phantom power is on and goes off when the phantom power is off.

MVC 121 Plus • Installation 5

3

MIC/LINE inputs 1 and 2 — Up to two mono microphones or line level signals,

balanced and/or unbalanced, may be connected to the 6-pole 3.5 mm captive screw

connector. Inputs provide gain settings to accommodate consumer and pro operating

line level sources, with sufficient gain to support mic level audio.

12MIC/LINE

Balanced MIC

Unbalanced MI

C

Jumper

NOTE: Mic inputs will be evenly

mixed into both left and right

outputs.

Figure 4. MIC/LINE Inputs

4

Line input 3, left (L) and right (R) — A line level audio source, such as a CD player,

output from a switcher, DVD player, or other audio device, may be connected to

the 5-pole 3.5 mm captive screw connector. Line inputs provide gain settings to

accommodate consumer and pro operating line level sources. Balanced or unbalanced

stereo connections can be wired to this connector (see the following example diagram).

DVD

CSR 6 RCA Adapter

MAIN 3

LR

MVC 121 MAIN wiring.eps

NOTE: Input devices cabled with two RCA male outputs may be connected to the

5-pole 3.5 mm captive screw connector using the Extron CSR 6 adapter.

Figure 5. Input Devices Cabled with Two RCA Male Outputs

To wire the captive screw connectors to the RCA or 3.5 mm mini phone plugs, see the

following illustrations.

Tip (+)

Sleeve ( )

Sleeve (Gnd )

Right Channel

(Red Jacket)

Left Channel

(White Jacket)

Tip (Signal)

Sleeve ( )

Ring (R)

Tip (L)

3.5 mm TRS Connector

LR

Unbalanced audioBalanced audio

Do not tin the wires!

Ring

Slee

ves

Tip

Sleeve

Tip

Sleeve

Tip

Ring

Figure 6. Wiring Captive Screw Connectors

4

5

6

MVC 121 Plus • Installation 6

5

Variable output left (L) and right (R) — The balanced/unbalanced stereo output

to an amplifier from the 5-pole 3.5 mm captive screw connector is controlled by the

large main volume control knob on the front panel (see Front Panel Features on

page8). Volume range is from 0 to 100%, or -100 to 0dB.

Adjust the speaker volume by using the following sequence:

1. Adjust the volume of the amplifier down to its minimum setting.

2. Adjust the main volume knob of the MVC to its default level of 100% volume, or

0dB.

3. Adjust the volume of the amplifier to the desired level.

4. Make subsequent volume level adjustments by using the volume knob of the MVC.

NOTE: Output devices cabled with two RCA male outputs may be connected to the

5-pole 3.5 mm captive screw connector using the Extron CSR 6 adapter.

Sound System

CSR 6 RCA Adapter

VARIABLE

LR

Unbalanced Stereo Output

Tip

NO GROUND HERE.

Sleeve(s)

Tip

NO GROUND HERE.

Balanced Stereo Output

Tip

Ring

Sleeve(s)

Tip

Ring

LR

Left

Right

Left

Right

CAUTION

For unbalanced audio, connect the sleeve(s)

to the center contact ground. DO NOT connect

the sleeve(s) to the negative (-) contacts.

ATTENTION:

• Connect the sleeve to ground. Connecting the sleeve to a negative ( –) terminal

will damage the audio output circuits.

• Connectez le manchon à la borne de terre (Gnd). Connecter le manchon à une

borne négative(-) endommagera les circuits de la sortie audio.

Figure 7. Output Devices Cabled with Two RCA Male Outputs

6

Fixed output left (L) and right (R) — The balanced/unbalanced stereo output from

the 5-pole 3.5 mm captive screw connector is output at a fixed volume adjustable gain

level for input to a recording device. Level can be adjusted at the recording device, or

using output gain control with a range of -24 to +12dB.

NOTE: The main volume control knob on the front panel operates independently of

the fixed output. Both the fixed and variable output connectors will output audio

simultaneously.

The fixed output connector is wired the same as the variable output connector. See

5

,

variable output connector, for an example application diagram with cabling instructions

and a caution.

7

MVC 121 Plus • Installation 7

7

RS-232 — Connect an RS-232 device (control system or PC) to the 6-pole 3.5 mm

captive screw connector for two-way RS-232 communication. Software for

RS-232 control is included with the MVC. See SIS Programming and Control starting

on page28 for information on how to install and use the control software and SIS

commands.

Ground (Gnd,

)

Tx

RS-232

Receive (Rx)

Transmit (Tx)

Rx 123

DIGI IN

Figure 8. RS-232

8

Digital input (DIGI IN) — A 6-pole 3.5 mm captive screw connector provides three

configurable ports designed to connect to various devices such as motion detectors,

alarms, buttons, photo (light) sensors, temperature sensors, or other devices. This

connector shares a common ground with the RS-232 connector (

7

). The wiring

diagram is shown below.

Do not tin the wires!

1

2

3

_

RS-232

21

Tx

Rx

DIGI IN

3

Figure 9. Digital Input Wiring Diagram

Both the RS-232 and the digital input connectors may be used simultaneously by using

a 6-pin captive screw connector with two wires sharing the same ground connector

(see figure10).

RS-232

DIGI IN

Tx Rx 1 2 3

Figure 10. 6-pin Captive Screw Connector

9

Reset — The recessed reset button is used to access various modes of resets. The

green power LED on the front panel indicates what mode of reset was accessed (see

the MVC121Plus Hardware Reset Modes (see page51) section for additional

details).

8

9

10

MVC 121 Plus • Installation 8

Front Panel Features

VOLUME

CONFIG

MIX

MICMIC LINE

321

MIXER/VOLUME CONTROLLER

MVC 121 Plus

21 3 4 5 6

7

1

12

2

23

3

34

4

45

5

56

6

67

7

Figure 11. MVC121Plus Front Panel

1

Power/Reset LED — Green power indicator lights when the MVC121Plus is

operational. The LED also blinks per mode reset (see Reset Actuator and LED on

page12).

2

Configuration (Config) port — The USB 2.0 port uses a mini type-B connector to

connect to a host computer for control. The MVC121Plus USB driver must be installed

prior to using the port (see the Install the USB Driver on page40 for additional

information).

The MVC appears as a USB peripheral with bidirectional communication. The USB

connection can be used for software operation (see Windows-based Program

Control on page38), and SIS control (see Software Control on page38 for

additional information).

3

Mic 1 gain control (see figure11)— Rotating the encoder screw clockwise increases

the gain setting, rotating the encoder screw counterclockwise decreases the gain. This

adjustment controls the single gain point in the mix matrix that mixes mono mic 1 levels

to the stereo output bus.

The gain adjustment is indicated by the LED indicator bar (

6

on the next page). When

the encoder screw rotation has stopped for three seconds or longer, the LED indicator

returns to the output meter indication.

4

Mic 2 gain control— Rotating the encoder screw clockwise increases the gain

setting, rotating the encoder screw counterclockwise decreases the gain setting. This

adjustment controls the single gain point in the mix matrix that mixes mono mic 2 levels

to the stereo output bus.

The gain adjustment is indicated by the LED indicator bar (

6

). When the encoder

screw rotation has stopped for three seconds or longer, the LED indicator returns to the

output meter indication.

5

Line level 3 gain control — Rotating the encoder screw clockwise increases the gain

setting, rotating the encoder screw counterclockwise decreases the gain setting. This

adjustment controls the single gain point in the mix matrix that mixes stereo line level

input 3 to the stereo output bus.

The gain adjustment is indicated by the LED indicator bar (

6

). When the encoder

screw rotation has stopped for three seconds or longer, the LED indicator returns to the

output meter indication.

11

MVC 121 Plus • Installation 9

6

LED ladder indicator bar — As the mix-point gain or output volume increases or

decreases via the front panel controls, the LED indicator bar lights from the bottom to

the top to indicate the current mix-point or volume level, as shown in the table below.

As the volume is increased or decreased within a volume range, the top LED to be lit

flashes once. If the knob is turned past maximum volume, all 8 LEDs flash for as long as

the knob continues to be turned.

When the output volume is muted, the individual LEDs scroll from the top to the bottom

to indicate a muted state. The LEDs return to being a meter for the output signal when

the audio is unmuted. Unmute occurs when the mute process is reversed, or when an

encoder screw or the volume knob position is changed. All LEDs blink when the user

attempts to adjust the encoder position beyond the maximum gain level.

When no activity is detected for either the mix-

point encoder screws or the volume adjust knob,

the LED indicator bar will reflect a combined L/R

output meter level, where the max level of either

left or right meter is always displayed, as shown in

the table on the right.

NOTE: Mix-point or volume level is only

displayed on the LED ladder indicator

whenever the front panel encoder screws

or the volume adjustment knob are being

adjusted and not through DSP Configurator

software or SIS commands.

LED Level Meter Display

(dB)

8 -6 to 0

7 -12 to -7

6 -18 to -13

5 -24 to -19

4 -30 to -25

3 -36 to -31

2 -42 to -37

1 -60 to -43

7

Volume level adjust knob (see figure11 on page8) —

VOLUME

MIXER/VOLUME CONTROLLER

MVC 121 Plus

Rotating te adjustment knob clockwise increases the output

volume, rotating the knob counterclockwise decreases the

volume. The LEDs light from bottom up as the volume level

increases.

Use the rotary encoder to adjust the output volume from 0

(-100dB) to 100% (0dB). The default setting is 100% (0dB).

The knob step adjustments are on the right.

The degree to which the volume is incremented or decremented

for each step the volume adjust knob is turned, depends on the

current volume setting.

As the volume increases or decreases, the

LED bar lights to indicate the current volume

range, as shown in the table below. As the

volume is increased or decreased within a

volume range, the top LED to be lit flashes

once. If the knob is turned past maximum

volume, all 8 LEDs flash, for as long as the

knob continues to be turned.

Volume

Range (dB)

Knob Step

Adjustment (dB)

-100 to -70 +/- 5dB

-70 to -30 +/- 3dB

-30 to -20 +/- 2dB

-20 to -0 +/- 1dB

MVC 121 Plus • Installation 10

In the table on the right, turning

the volume adjust knob (

7

on the

previous page) affects the volume

range and turning the input gain control

screws affects the mix-point range

(see figure11,

3

,

4

, and

5

on

page8).

LED

Level

Volume Range

(dB)

Mix-point

Range (dB)

8 -4 to -0 +7 to +12

7 -9 to -5 +1 to +6

6 -14 to -10 -3 to +0

5 -19 to -15 -7 to -4

4 -29 to -20 -11 to -8

3 -49 to -30 -15 to -12

2 -69 to -50 -19 to -16

1 -99 to -70 -23 to -20

MVC 121 Plus • Operation 11

Operation

This section describes the operation of the MVC121Plus, including:

• MVC121Plus Operation • Filter

• DSP Processing and Signal Flow • Mixer

• Filter Processor Block • Output Channels

MVC121Plus Operation

The MVC121Plus can be configured using a PC running Windows XP or better and the

DSPConfigurator software (available on the included disc or at www.extron.com), or the

Extron SISSimple Instruction Set using HyperTerminal or DataViewer.

The MVC121Plus is configured for immediate operation, with all inputs mixed to the

outputs. However, input gain must be set, especially for the microphone inputs, before the

device will function at optimal levels.

The front panel small rotary encoders control level at the mix-points, not at the input gain

stage. Mix-points have a gain range of −24dB to +12dB. In some instances, the mix-point

gain range may be too great, allowing for settings that are too loud or too soft, and in some

instances the loudest settings may cause feedback or clipping. Soft limits can be applied to

the mix-point gain ranges, limiting the gain range for smoother operation.

Mix-point levels and Variable output levels may be set using the front panel rotary controls.

Input gain should be set using the DSP Configurator software, which provides metering in

dBFS that will assist you in configuring the device for optimal operation. The MVC121Plus

is a digital device, therefore optimal operating levels are close to 0dBFS without ever going

over 0dBFS (0dB “full scale” on the input or output meters). Levels above 0dBFS cause

clipping, which is always audible on a digital device.

Soft limits may also be applied to the Variable output, which will prevent the volume from

becoming too loud or too soft. The Fixed output, while not affected by the front panel

Volume control, does include a gain stage that is configured with the DSP Configurator

software. The Fixed output gain setting can be used to optimize the level going to, for

example, a recording device or ALS system.

Lastly, the input signal chain provides a Filter/EQ block. Use these processors to optimize

the tonal quality of your source devices. A high-pass filter applied to a microphone will

reduce thumps and pops, while the parametric EQ can be used to give a talker more

presence, or to remove frequencies that are likely to cause feedback.

Rear Panel Operation

See Rear Panel Features starting on page3 section for further details.

Front Panel Operation

See Front Panel Features starting on page8 section for further details.

MVC 121 Plus • Operation 12

Power Cycle

Current mixing and audio processor settings, the current state of the device, are saved in

nonvolatile memory. When the unit is powered off, all settings are retained. When the unit

is powered back on, it recalls settings from the nonvolatile memory. If a configuration was

in process during the power down, these saved mix, audio level, and audio DSP processor

settings become active.

On power up the front power indicator LED lights solid when the unit is available for

operation or programming.

Firmware Updates

The MVC121Plus firmware can be updated through USB (front panel) or RS-232 (rear

panel) connection.

NOTE: When new firmware is available, you can obtain it from the Extron website.

Upload the firmware using Firmware Loader in DSPConfigurator program (see

Software Control on page38), or using the Extron standalone Firmware Loader

software application available at www.extron.com.

Reset Actuator and LED

A recessed button on the rear panel initiates two reset modes. The green front panel LED

(see figure11,

2

on page8) blinks to indicate the reset modes as described in the

following section. See the previous front and rear panel diagrams.

Hardware Reset Modes:

With power on, when the reset button is held down, the front and rear panel LEDs pulses

(blink) every three seconds and put the unit in a different reset mode. The MVC121Plus

defaults back to the base firmware that shipped with the unit from the factory allowing the

user to recover a unit that has incorrect code or updated firmware running.

NOTE: Control software may not function correctly if using an earlier firmware version.

MODE 1— Firmware reset: Disconnect power to the MVC121Plus. Press and hold the

reset button while applying power to return the firmware to the version shipped with the unit

from the factory. This allows recovering a unit with incorrect or corrupt firmware.

All user files and settings are maintained.

MODE 5 — Factory default reset: With power on, press and hold the reset button until

the reset LED blinks 3 times (~9 seconds). Each flash lasts for 0.25 seconds. Release

then momentarily (<1 second) press the reset button to return the MVC to factory default

conditions. If the second momentary press does not occur within 1 second, the reset is

exited.

The default (reset) state of the device is:

• Inputs 1 – 3 are mixed to fixed and variable outputs (set to 0dB gain).

• All outputs are active (unmuted, 100% volume or 0dB gain).

• DSP (Filter) is inactive.

• All audio inputs are active (0dB gain and unmuted).

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Extron MVC 121 Plus User manual

Extron MVC 121 Plus User manual

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