Extron electronic MLS 103 SV, MLS 103 V, MLS 102 VGA, MLS 100 A User Manual

User’s Manual

www.extron.com

Extron Electronics, USA

1230 South Lewis Street
Anaheim, CA 92805
USA

714.491.1500
Fax [phone]

© 2002. 2003 Extron Electronics. All rights reserved.

Extron Electronics, Europe

Beeldschermweg 6C
3821 AH Amersfoort
The Netherlands
+31.33.453.4040
Fax [phone]

Extron Electronics, Asia

135 Joo Seng Road, #04-01
PM Industrial Building
Singapore 368363
+65.6383.4400
Fax [phone]

Extron Electronics, Japan

Daisan DMJ Building 6F
3-9-1 Kudan Minami
Chiyoda-ku, Tokyo 102-0074 Japan
+81.3.3511.7655
Fax [phone]

MLS 100 A, MLS 102 VGA,

MLS 103 V, MLS 103 SV

MediaLink™ VersaTools™ Switchers

68-652-01 Rev. A

Printed in the USA

03 03

Precautions

Safety Instructions • English

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

This symbol is intended to alert the user of the
presence of uninsulated dangerous voltage within
the product's enclosure that may present a risk of
electric shock.

Caution

Read Instructions • Read and understand all safety and operating

instructions before using the equipment.

Retain Instructions • The safety instructions should be kept for future

reference.

Follow Warnings • Follow all warnings and instructions marked on the

equipment or in the user information.

Avoid Attachments • Do not use tools or attachments that are not

recommended by the equipment manufacturer because they may be
hazardous.

Consignes de Sécurité • Français

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

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

Attention

Lire les instructions• Prendre connaissance de toutes les consignes de

sécurité et d’exploitation avant d’utiliser le matériel.

Conserver les instructions• Ranger les consignes de sécurité afin de

pouvoir les consulter à l’avenir.

Respecter les avertissements • Observer tous les avertissements et

consignes marqués sur le matériel ou présentés dans la documentation
utilisateur.

Eviter les pièces de fixation • Ne pas utiliser de pièces de fixation ni

d’outils non recommandés par le fabricant du matériel car cela
risquerait de poser certains dangers.

Sicherheitsanleitungen • Deutsch

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

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

Achtung

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

sollten Sie alle Sicherheits-und Bedienungsanleitungen genau
durchlesen und verstehen.

Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit

des Produktes sollten Sie aufbewahren, damit Sie im Bedarfsfall darauf
zurückgreifen können.

Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und

Anleitungen auf dem Gerät oder in der Benutzerdokumentation.

Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte,

die nicht ausdrücklich vom Hersteller empfohlen wurden, da diese eine
Gefahrenquelle darstellen können.

Instrucciones de seguridad • Español

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

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

Precaucion

Leer las instrucciones • Leer y analizar todas las instrucciones de

operación y seguridad, antes de usar el equipo.

Conservar las instrucciones • Conservar las instrucciones de seguridad

para futura consulta.

Obedecer las advertencias • Todas las advertencias e instrucciones

marcadas en el equipo o en la documentación del usuario, deben ser
obedecidas.

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

sean especificamente recomendados por el fabricante, ya que podrian
implicar riesgos.

Warning

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

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

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

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

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

be stepped on or pinched by items placed upon or against them.

Servicing • Refer all servicing to qualified service personnel. There are no user-

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

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

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

Lithium battery • There is a danger of explosion if battery is incorrectly replaced.

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

Avertissement

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

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

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

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

Protection du cordon d’alimentation • Acheminer les cordons d’alimentation de

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

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

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

Fentes et orifices • Si le boîtier de l’appareil comporte des fentes ou des orifices,

ceux-ci servent à empêcher les composants internes sensibles de surchauffer. Ces
ouvertures ne doivent jamais être bloquées par des objets.

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

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

Vorsicht

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

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

Stromunterbrechung • Um das Gerät auf sichere Weise vom Netz zu trennen,

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

Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nicht

im Weg liegen und niemand darauf treten kann oder Objekte darauf- oder
unmittelbar dagegengestellt werden können.

Wartung • Alle Wartungsmaßnahmen sollten nur von qualifiziertem

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

Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuse

aufweist, dienen diese zur Vermeidung einer Überhitzung der empfindlichen
Teile im Inneren. Diese Öffnungen dürfen niemals von anderen Objekten
blockiert werden.

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

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

Advertencia

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

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

Desconexión de alimentación eléctrica • Para desconectar con seguridad la

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

Protección del cables de alimentación • Los cables de alimentación eléctrica se

deben instalar en lugares donde no sean pisados ni apretados por objetos que se
puedan apoyar sobre ellos.

Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personal

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

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

es para evitar el sobrecalientamiento de componentes internos sensibles. Estas
aberturas nunca se deben obstruir con otros objetos.

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

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

FCC Class A Notice

Note: 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.

Note: This unit was tested with shielded cables on the peripheral devices. Shielded
cables must be used with the unit to ensure compliance.

Extron’s Warranty

Extron 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, Europe, Africa, and the Middle East:
and Central America:

Extron Electronics Beeldschermweg 6C
1230 South Lewis Street 3821 AH Amersfoort
Anaheim, CA 92805, USA The Netherlands

Asia: Japan:

Extron Electronics, Asia Daisan DMJ Bldg. 6F,
135 Joo Seng Road, #04-01 3-9-1 Kudan Minami
PM Industrial Bldg. Chiyoda-ku, Tokyo 102-0074
Singapore 368363 Japan

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 modification to the product.

If it has been determined that the product is defective, please call Extron and ask for
an Applications Engineer at [phone] (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 fitness 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.

Extron Electronics, Europe

Extron Electronics, Japan

Quick Start Guide — MLS 100 Series

To install and set up the MLS 100 Series switchers, follow these steps
and see the appropriate section of this manual for details:

Step 1

Turn all of the equipment off and disconnect the power cords.

Step 2

Mount the switcher (if applicable) or affix the rubber feet to the
bottom of the switcher for tabletop use. See page 2-2.

Step 3

Attach the cables. See the instructions beginning on page 2-5.

Laptop

Projector

NOTE Ground all devices. If you use

cable that has a drain wire, tie the
drain wire to ground at both ends.

To connect a computer or third
party control system, see page 2-8.

DE ABC ABD

RS-232

1A 1B 2A 2B 3A 3B

Relays IR/ RCM

IR

Balanced/
Unbalanced
Output

External

Power Supply

MLS 102 VGA

MLS 102 VGA

VCR

Wireless

Microphone's

Receiver

INPUTS

AUDIO INPUTS

2

3

LR

LR

Unbalanced,
Stereo Input

2

4

1

1

Balanced/Unbalanced,
Mono Aux. Input

AUX/MIX

MONO

OUT

LR

12V .5A MAX

OUTPUT

CONTROL/

POWER

A

B

ABCDE ABC

Display/Source Control

Amplifier

For the Aux/Mix Mono audio input, connect a 3.5 mm,
3-pole captive screw connector to one end of an audio
cable as shown at right. This line level input can be
balanced or unbalanced. Wire the other end to one
tip-ring-sleeve connector.

The Aux/Mix level must be
adjusted (-43dB to +24dB) via the
front panel control. It cannot be

adjusted via software.

Gnd (Sleeve, )

Aux/Mix Input Wiring

(balanced/unbalanced, mono)

123456

Tally Out

MLS

Extron Switcher Control

/Power

MLC 206

Bottom Panel

AUX/MIX

MONO

Tip (+)

Ring (–)

33-644-01 A

07 01

Printed in the

USA

MLS 100 Series• Quick Start Guide

QS-1

Quick Start Guide — MLS 100 Series, cont’d

Table of Contents

To connect an MLC 206 or a third party control system, see the

CONTROL

POWER

AB

/

MLS100Series
Switcher
Control/Power
Port

+12VDC input

Ground ( )

+12VDC

Ground ( )

Receive (Rx)

B
A

Transmit (Tx)

Step 4

Connect power cords and turn the equipment on.

diagram below, and see page 2-8 for details.

NOTE You must connect a ground wire

between the MLC and MLS.

NOTE If you use cable that

has a drain wire, tie
the drain wire to
ground at both ends.

AB

MLS / Power

Transmit (Tx)
Receive (Rx)

External

Power Supply

(12VDC, 1A max.)

B
A

Step 5

Test the system: select an input from the front panel buttons or via
the control software; observe the display and listen to
the audio output. If you use the MediaLink Control
Software, set the volume control in the Controller (MLC)
Config section to “Switcher”, as shown at right. Make
any needed cabling corrections.

To avoid damage to your hearing, the Aux/Mix
input and the selectable audio inputs’ levels
and output volume should be set as low as
possible before you test the sound system.

Step 6

Adjust the Aux/Mix level: turn the front panel potentiometer while
listening to the audio
output. See page 3-3.

Step 7

Set up the switcher. In
the Switcher (MLS)
Config part of the
MediaLink Control
Software, set the per­input audio adjust­ments, RGB delay
period (MLS 102 VGA),
and the output volume.
See pages 4-8 to 4-10.

MLC 206's
MLS/Power
Port

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

About this Manual ................................................................ 1-2

About the MLS 100 Series Switchers .......................... 1-2

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

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

UL/Safety Requirements..................................................... 2-2

Mounting the Switchers .................................................... 2-2

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

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

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

For furniture mounting ......................................................... 2-4

For projector mounting ......................................................... 2-4

Rear Panel Features and Cabling .................................. 2-5

Video connections ................................................................. 2-5

Audio connections ................................................................. 2-6

Control and power connections ...........................................2-8

Setting Up Optimal Audio Gain .....................................2-9

Setup via the MediaLink Control Software ....................... 2-10

Application Diagrams ....................................................... 2-11

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

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

Executive mode — enabling and disabling

front panel buttons ............................................................... 3-3

Troubleshooting ..................................................................... 3-4

Chapter 4 • Serial Communication ................................... 4-1

RS-232 Programmer’s Guide ............................................ 4-2

Host-to-MLS communications ............................................... 4-2

MLS-initiated messages ........................................................ 4-2

Error responses ....................................................................... 4-3

Using the command/response tables .................................. . 4-3

Command/response table for SIS commands....................... 4-4

Command/response table for

special function SIS commands ............................................. 4-6

Control Software for Windows®................................... 4-7

Installing the software .......................................................... 4-7

QS-2

MLS 100 Series • Quick Start Guide

MediaLink VersaTools Switchers • Table of Contents

i

Table of Contents, cont’d

Using the control program ................................................... 4-7

User Mode .............................................................................. 4-8

Switcher (MLS) Config ......................................................... 4-10

Saving and restoring configurations .................................. 4-10

Emulation mode .................................................................. 4-11

Using the help program ...................................................... 4-12

Key to file names ................................................................. 4-12

Appendix A • Specifications, Part Numbers,

and Accessories.............................................................................. A-1

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

Included Parts......................................................................... A-6

Accessories............................................................................... A-7

Cables ......................................................................................... A-7

Adapters .................................................................................... A-7

MLS 100 Series Switcher Block Diagram .................. A-8

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

MediaLink™ VersaTools™ Switchers

Chapter One

1

68-652-01 Rev. A

Printed in the USA

ii

MediaLink VersaTools Switchers • Table of Contents

03 03

Introduction

About this Manual

About the MLS 100 Series Switchers

Features

Introduction

About this Manual

This manual contains information about the Extron MLS 100
Series Switchers (MLS 100 A, MLS 103 V, MLS 103 SV,
MLS 102 VGA) and on how to install, set up, and operate them.
“MLS 100 Series switcher”, “MLS”, and “switcher” will be used
interchangeably in this manual.

About the MLS 100 Series Switchers

The Extron MLS 100 Series Switchers are compact, quarter rack
width switchers. The MLS 102 VGA, MLS 103 SV, and
MLS 103 V have a 250 MHz (-3dB) video bandwidth. The
MLS 102 VGA, MLS 103 SV, and MLS 103 V provide a way to
switch up to three video input signals (up to two for the VGA
model) to one output.

All models (MLS 102 VGA, MLS 103 SV, MLS 103 V, MLS 100 A)
feature four selectable audio inputs, and also one Aux/Mix
input that is always active and can be mixed with any and all of
the four selectable audio inputs.

Front panel buttons, an RS-232-based control system, or an
Extron MediaLink
selection.

Features

Furniture, rack, and projector mountability — MLS 100 Series

Switchers can be mounted under a desk or other
furniture, or mounted on a projector lift with optional
brackets. Alternatively, they can be rack mounted on an
optional rack shelf.

Stereo audio input and output — Unbalanced stereo audio

inputs can be output as balanced or unbalanced stereo
audio, and the audio output level can be adjusted.

Mono auxiliary/mix audio input— The Aux/Mix port on each

switcher lets you mix a mono, line level audio input
signal with that of one of the four selectable stereo audio
inputs.

™

Controller (MLC) can be used for input

MediaLink™ VersaTools™ Switchers

Chapter Two

2

Installation

UL/Safety Requirements

Mounting the Switchers

Rear Panel Features and Cabling

Setting Up Optimal Audio Gain

1-2

Application Diagrams

MediaLink VersaTools Switchers • Introduction

Installation

UL/Safety Requirements

The Underwriters Laboratories (UL) requirements listed below
pertain to the safe installation and operation of the switcher.

1. This unit is not to be connected to a centralized DC power
source or used beyond its rated voltage range.

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

2. Do not use the switcher near water.

To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.

3. Clean the switcher only with a dry cloth.

4. Do not install the switcher near any heat source, such as a

radiator, heat register, stove, or another apparatus
(including amplifiers) that produces heat.

5. Unplug the switcher during lightning storms or when it
will be unused for long periods.

6. This unit must be installed in accordance with the
National Electrical Code.

Mounting the Switchers

The one rack unit high, quarter rack width switchers can be set
on a table, or mounted on a rack shelf, mounted under a desk or
tabletop, or mounted on a projector bracket.

A
U
T
O

S
W
I
C

M

H

ODE

NO

1

RMA

L

AUTO

2

3

4

A/V SWITCHER

A
U
T
O

S
W

IC

MODE

H

NORM

1

AL

A

2

UTO

Versa Tools Rack Shelf

3

4

A/V SWITCHER

Quarter Rack Width False Front

Face Plate

M

LS 100 Series

INP

U

1

T S

EL

EC

T

2

3

A
U

X
/M

L

4

IX

EV

Use 2 mounting holes on

opposite corners.

EL

Me

d

iaLink Sw

itch

er

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

Mounting the MLS on a VersaTools rack shelf

Only products in the VersaTools line can be mounted to a
VersaTools shelf. Most 1U rack-mountable Extron
products can be mounted on the standard shelf.

Tabletop use

Each MLS switcher comes with rubber feet. For tabletop use,
attach a self-adhesive rubber foot to each corner of the bottom of
the unit.

Rack mounting

For optional rack mounting, do not install the rubber feet.
Mount the MLS on a VersaTools™ 19" 1U Rack Shelf (Extron
part #60-190-20) or a standard Universal 1U Rack Shelf (Extron
part #60-190-01). On the standard rack shelf, the MLS 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 MLS, remove them.

2. Mount the MLS on the rack shelf, using two 4-40 x 1/8
screws in opposite (diagonal) corners to secure the MLS
switcher to the shelf.

MediaLink VersaTools Switchers • Installation

MLS 100 Series

IN

P
U

1

T

S

E
L

E
C

T

2

3

A

U

X

/M

L

4

IX

E

V

E

L

MLS 100 Series

MediaLink Switcher

IN

P
U

1

T

S

E

L
E

C

T

2

3

A
U

X
/M

L

4

IX

E

V
E

L

MediaLink Switcher

Mounting the MLS on a 1U standard rack shelf

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

MediaLink VersaTools Switchers • Installation

2-32-2

Installation, cont’d

Furniture or projector mounting

Furniture mount or projector mount the MLS using the optional
mounting kit (part #70-212-01, furniture; or 70-217-01, projector)
as follows:

1. Attach the mounting brackets to the MLS with the
machine screws provided.

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

For furniture mounting

3a. Hold the MLS 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 protrudes.

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

and place the MLS against the surface, with

the screws through the bracket slots.

See the illustration at left.

MLS 100 Series

I
N

P
U

1

T
S

E
L

E
C

T

2

3

A
U

X
/M

L

4

IX
E
V

E
L

M

ediaLink

Sw

itcher

Mounting the MLS to furniture

7a. Slide the switcher slightly forward or

back, then tighten all four screws to
secure the MLS in place.

For projector mounting

3b. Secure the MLS to a projector

mount or other surface by
inserting the mounting bolt
through the bracket’s slotted
hole, as shown at right.

Mounting the MLS to a projector mount

Ceiling

Projector
Mounting
Bracket

Mounting
Bolt

M
L
S
1
0
2
V
G

1

A

1

A

2

U
D
IO

L

IN
P
UTS

3
R

I
N
PU

L

T

4

S

R

2

MO
A
UX

N
O
/
MIX

L

1
2
V

O
UT

R

A

.5

B

A

O

M

P
C
O

U
O
W

T

A

N

P
ER

X

T

UT
R
O
L
/

Digital Projector

Rear Panel Features and Cabling

Turn off and disconnect power from all the equipment before
you connect cables to the MLS.

MLS 102 VGA

1 2

AUDIO INPUTS

2

LR

3

INPUTS

2

4

LR

AUX/MIX

MONO

LR

1

1

MLS 102 VGA

87

5 6

MLS 103 V

3

2

1

INPUTS

1

LR

AUDIO INPUTS

2

LR

3

LR

4

LR

AUX/MIX

MONO

LR

MLS 103 V

Video connections

Computer video inputs (MLS 102 VGA only) — Cable one or

1

two VGA-UXGA computers to these individually buffered
15-pin HD connectors. These inputs provide ID bit termination.

Computer video output (MLS 102 VGA only) — Connect a

2

cable from this 15-pin HD connector to the input port of the
projector or display.

S-video inputs (MLS 103 SV only) — Cable up to three S-video

3

sources to the MLS via these female 4-pin mini DIN connectors.

S-video output (MLS 103 SV only) — Connect the S-video

4

input port of the projector or display to the MLS by plugging S­video cables into these female 4-pin mini DIN connectors.

Composite video inputs (MLS 103 V only) — Connect up to

5

three composite video input sources to the MLS 103 V using
coaxial cables and these female BNCs.

Composite video output (MLS 103 V only) — Attach a coaxial

6

cable to this female BNC, and connect the other end of the cable
to the projector’s or display’s video input port.

OUTPUT

OUT

12V .5A MAX

OUTPUT

OUT

12V .5A MAX

108 9

MLC/RS-232

POWER

A

B

11109

MLC/RS-232

POWER

A

B

11

MLS 103 SV

1

AUDIO INPUTS

2

1

LR

LR

MLS 103 SV

8

MLS 100 A

AUDIO INPUTS

2

1

LR

LR

MLS 100 A

8

8

3 4

3

2

INPUTS

4

3

LR

LR

4

3

LR

LR

AUX/MIX

MONO

AUX/MIX

MONO

9

OUTPUT

OUT

LR

12V .5A MAX

OUT

LR

12V .5A MAX

MLC/RS-232

POWER

A

B

11108

MLC/RS-232

POWER

A

B

11109

2-4

MediaLink VersaTools Switchers • Installation

MediaLink VersaTools Switchers • Installation

2-5

Installation, cont’d

)

Audio connections

The stereo audio inputs 1–3 (7 and 8 on page 2-5 and below)
correspond to video inputs 1, 2, and 3. All four audio inputs can
be selected via the front panel buttons, RS-232 control
(including MLC), or the MediaLink Control Software. An audio
signal from one of these inputs is output only when the
corresponding input is selected. Using the MediaLink Control
Software you can separately adjust the level of each of these
audio inputs.

Via RS-232 control audio input signals can also be switched
separately from the video signals (a feature called “audio
breakaway”.) See pages 4-4 and 4-8.

Computer audio inputs (MLS 102 VGA only) — These inputs

7

each accept unbalanced stereo audio input via a 3.5 mm stereo

Tip (+) Sleeve (Gnd)

Ring (R, -)

Audio Inputs (all models) — Each of these 3-pole 3.5 mm

8

captive screw
connectors accepts
one unbalanced stereo
or mono audio input.
Wire each captive
screw connector
as shown at
right,
depending on
the input type.

Connect two RCA-style (tip-ring) connectors to the other end of
each audio input cable as shown here:

Tip (+) Sleeve (Gnd)

Tip (L, +)

Sleeve (Gnd)

LR

Left (+)

Gnd (Sleeve, )

Audio Input Wiring

(unbalanced, mono)

mini receptacle (tip­ring-sleeve type). If
you do not have a pre­terminated audio
cable, wire the mini
jack on each end of the
cable as shown at left.

LR

Left (+)

Gnd (Sleeve, )

Right (+)

Audio Input Wiring

(unbalanced, stereo

Aux/Mix Mono audio input (all models) —The Aux/Mix

9

Mono audio channel is always active: its signal is output no
matter which, if any, other audio input (input 1, 2, 3, or 4) is
selected. For example, you could connect the output of a
wireless microphone receiver to this port so the presenter’s
comments can always be heard and are independent of the A/V
source used for the presentation.

The mix output level can be adjusted between -43dB and +24dB.

The Aux/Mix level must be adjusted
physically via the front panel
control. It cannot be adjusted via

software.

Connect a 3.5 mm, 3-pole captive screw
connector to one end of an audio
cable as shown at right. Wire the
other end to two tip-ring connectors
or one tip-ring-sleeve connector as
shown in 7 and 8, and connect it
between the MLS 100 Series switcher
and the auxiliary audio source.

Audio output (Out) (all models) — Connect self-powered

10

(balanced/unbalanced, mono)

Tip (+)

Gnd (Sleeve, )

Ring (–)

Aux/Mix Input Wiring

speakers or another stereo audio device to the MLS via this
5-pole 3.5 mm captive screw connector. Depending on how the
connector is wired, the audio output can be balanced or
unbalanced stereo audio. Wire the connector as shown below.

Unbalanced Output

Tip

See Caution

Sleeve (s)

Tip

See Caution

CAUTION

LR

OUT

Sleeve (s)

Connect the sleeve to ground (Gnd). Connecting

Balanced Output

Tip

Ring

Tip

Ring

the sleeve to a negative (-) terminal will damage the
audio output circuits.

Later, after all the equipment has been cabled and powered on,
use the MediaLink Control Program or an RS-232 controller to set
the per-input gain/attenuation to match the correct audio output
level for the kind of output (balanced or unbalanced) you need.
See pages 2-9 and 4-10 for details on determining and setting
the gain/attenuation to produce the desired output levels.

If you wire an audio output for balanced output, the MLS
will output a unity signal (input level = output level).
Wiring an audio output for unbalanced output causes
the audio signal to be attenuated by 6dB. See pages 2-9
and 2-10 for instructions on adjusting audio gain.

AUX/MIX

MONO

LR

OUT

MediaLink VersaTools Switchers • Installation

MediaLink VersaTools Switchers • Installation

2-72-6

Installation, cont’d

Control and power connections

MLC/RS-232 Power port (all models) — An Extron MediaLink

11

Controller (MLC 206), a computer, or a third party RS-232
controller provides remote control of input switching and
volume, and also provides a way to set the switcher’s audio
input levels. To control and/or set up the MLS, connect a cable
between this 5-pole 3.5 mm captive screw connector and an
optional MLC 206, computer, or a third party RS-232 controller.
Also connect an external 12VDC power supply here to provide
power to the MLS and to the optional MLC.

Extron Comm-Link cable is recommended for this connection.
If you use Comm-Link cable, the switcher and controller can be
up to 250 feet (76.2 m) apart. Wire the captive screw connector
for connection to either an MLC 206 or third party controller as
shown in the picture on the next page.

• For a stand-alone MLS switcher, connect a cable from the host
computer or a third party control system to this connector to set
up and remotely control the switcher, connect a 12VDC power
supply, and tie all the drain wires to the same ground.

• For an MLS switcher slaved to an MLC controller, connect a
cable from the MLC’s MLS/Power port and from a 12VDC

MLC/RS-232

POWER

AB

power supply, and tie all the drain wires to the same ground.

MLS100Series
Switcher
MLC/RS-232
Power Port

+12VDC input

Ground ( )

External

Power Supply

(12VDC, 1A max.)

Ground all devices

3

2

1

INPUTS

AUDIO INPUTS

2

1

4

3

LR

LR

LR

LR

MLS 103 V

MLS 103 V
Rear Panel

(76.2 m)

AUX/MIX

MONO

OUTPUT

OUT

LR

250 ft

max.

CONTROL/

A

12V .5A MAX

Once the system has been cabled and set up via the control
software and the front panel Aux/Mix adjustment, the MLC or
a host computer communicating through the MLC can be used
to remotely control the switcher. Refer to chapter four of the
MediaLink Controllers User’s Manual and to the MediaLink
Control Program help file for details on configuring an
MLC-MLS system.

An Extron IR Link infrared repeater cannot be used with
the MLS 100 Series switchers. There is no connection
for that device’s control signals.

The MLC to which the MLS 100 Series switcher is
connected must have MLC firmware version 1.04 or

higher. The control/setup software must be version

2.0 or higher. Use one of the following methods to find

out the version levels of the MLC’s firmware and the
control software.

• Connect the MLC’s RS-232 port to a computer or
RS-232 controller, and send an SIS command (see
chapter four) of Q to the MLC. The MLC will respond
with its firmware version.

• Connect the MLC’s RS-232 port to a computer, start
the MediaLink control software
(see chapter four), and click on
Help to display the software
version, the MLC’s firmware
version, and the MLS’s
firmware version as shown in

POWER

B

the example at right.

If your MLS’s firmware is an earlier version, contact

External

Power Supply

Extron to obtain updated firmware.

Setting Up Optimal Audio Gain

Audio input levels and desired output levels vary depending on
the types of equipment involved. Before setting the MLS’s per­input gain or attenuation, determine the levels of the input and
output equipment. Use the table below as a general guide.

+12VDC

Ground ( )

Receive (Rx)

B
A

Transmit (Tx)

NOTE If you use cable that has a

drain wire, tie the drain wire
to ground at both ends.

Transmit (Tx)
Receive (Rx)

Connecting an MLC 206
to a MediaLink

VersaTools Switcher

and an external power supply

MediaLink VersaTools Switchers • Installation

B
A

AB

MLS / Power

ABCDE ABC

IR

RS-232

Display/Source Control

MLC 206 Bottom Panel

MLC 206's
MLS/Power
Port

DE ABC ABD

1A 1B 2A 2B3A 3B

Relays IR/ RCM

NOTE

33-644-01 A

07 01

Printed in the

USA

123456

Tally Out

MLS

/Power

Extron Switcher Control

You must connect a
ground wire between
the MLC and MLS.

Typical Audio Levels for Various Equipment Types

Input/Output Levels

-10dBV

(-8dBu)

XX

Professional line level audio equipment

Consumer audio equipment (VCRs, DVDs,

laptop computers, portable audio devices)

Categories

Equipment

+4dBu 0dBu

MediaLink VersaTools Switchers • Installation

-20dBV

(-18dBu)

XX

2-92-8

Installation, cont’d

DVD

Video

Audio

VCR

Amplifier

Speakers

MLS 100 A

L

R

A

B

L

R

L

R

L

R

1

2

3

L

R

4

AUX/MIX
MONO

AUDIO INPUTS

OUT

C

O

N

T

R

O

L

/

P

O

W

E

R

12V .5A M

AX

Extron

MLS 100 A

MediaLink

Switcher

Extron
MLC 206

MediaLink
Controler

Extron

M

e

d

ia

L

i

n

k

C

o

n

t

ro

lle

r

MLC 206

DISP

LAY

PO

W

ER

V

OLUME

M

AX

/

M

IN

VCR

D

VD

Laptop

LCD Projector

Gain and attenuation are adjustable (from -18dB to +24dB) for
each input (1 through 4) via RS-232 control only (using
HyperTerminal, a third party controller, or the MediaLink
Control Software). The gain and attenuation for the Aux/Mix
input are adjustable only via the switcher’s front panel. (See
page 3-3 for Aux/Mix details.)

Setup via the MediaLink Control Software

To avoid damage to your hearing, the output
volume should be set as low as possible before you
test the sound system.

1. Cable and power on all the equipment.

2. Start the MediaLink Control Software (see page 4-7), and

select the Switcher (MLS) Config portion of the program
(the second tab from the left).

3. Select an audio input. See the picture below for an
example.

output, it causes the audio signal to be attenuated by
6dB (gain = -6dB).

For dBV the reference is 1 volt.
For dBu the reference is 0.775 volts.

5. In the control program, move the Audio Input Level slider
to select the gain/attenuation for that input,
as shown at left.

6. Repeat steps 3–5 for the other three inputs.

7. Test the system by listening to audio output for each input.

Start by setting the audio output set to the lowest level.
7a. If the audio output is too loud or is clipping

(becoming distorted as the loudest parts are cut off),
decrease the gain for that input.

7b. If the output is too soft or inaudible, increase the gain.

Application Diagrams

2-10

4. Use the following table to determine the gain or
attenuation. Match the desired level for balanced output
or for unbalanced output, depending on how the output
connector is wired.

Gain and Attenuation Settings for MLS 100 Series Switchers

+4dBu

+4dBu 0dB -4dB -12dB -22dB

0dBu

+4dB -8dB -18dB

Input Source

-10dBV

Levels

(-8dBu)

-20dBV

(-18dBu)

Balanced

0dBu

0dB

+8dB+12dB

Desired Output Levels

-10dBV

-20dBV

(-18dBu)

-10dB

0dB

+4dBu 0dBu

+6dB

+10dB +6dB

+18dB +14dB

(-8dBu)

0dB

10dB+18dB+22dB

Unbalanced

+2dB -6dB -16dB

If you wire an audio output for balanced output, the
MLS will output a unity signal (input level = output
level). If you wire an audio output for unbalanced

MediaLink VersaTools Switchers • Installation

-10dBV

-20dBV

(-8dBu)

(-18dBu)

-2dB -12dB

+6dB

+16dBn.a. +24dB

+6dB

-4dB

MediaLink VersaTools Switchers • Installation

2-11

Installation, cont’d

MediaLink™ VersaTools™ Switchers

Laptop

1

1

MLS 102 V

Extron
MLS 102VGA

MediaLink
Switcher

Camera

1

AUDIO INPUTS

2

L

R

1

L

MLS 103 SV

Extron
MLS 103SV

MediaLink
Switcher

LCD Projector

Laptop

DVD

VCR

DISPLAY

T

PU

L/

T

O

U

R

O

T

N

R

O

E

C

W

O

P

UT

O

LR

2

B

/MIX

A

AUX

S

NO

MO

INPUT

4

12V .5A MAX

LR

R

3

L

UDIO INPUTS
A

2

GA

POWER

VOLUME

/

X
A
M

IN
M

Extron

MLC 206

in
L
ia

d
e

M

Extron

r

lle

MLC 206

ntro

o
C
k

MediaLink

Controller

Amplifier

PC

Speakers

Chapter Three

3

LCD Projector

Laptop

DVD

VCR

Y
A

PL

R

IS

E

D

W

O

/
L
O

R

T

N

R

T

O

E

U

C

P

W

T

O

U

P

O

R

OUT

3

L

B

A

AUX/MIX

2

MONO

INPUTS

R

4

12V .5A MAX

L

R

3

L

R

P

E

M
U
L

O
V

/

AX

M

IN

M

Extron

MLC 206

MediaLink

Amplifier

MediaLink Controller

Extron

Controller

MLC 206

Operation

Front Panel Features and Operation

Troubleshooting

2-12

DVD

Speakers

MediaLink VersaTools Switchers • Installation

Operation

Front Panel Features and Operation

MLS 100 Series Front Panel
(all models)

MLS 100 Series

INPUT SELECT

1

2 3 4

All the MLS 100 Series switchers share the same front panel
design, shown above.

Input selection buttons and indicator LEDs — Press one of

1

these buttons to select the desired audio and video input. The
corresponding LED lights and remains lit while an audio-video
input is selected. During audio breakaway (selectable only via
RS-232 control, described in chapter four), audio is switched
separately from video; the selected video input’s LED lights
steadily, and the audio input’s LED blinks.

• The MLS 100 A accepts only audio inputs, so pressing one
of these buttons selects an audio-only input.

• The MLS 103 V and MLS 103 SV offer three video inputs
and four selectable audio inputs. Pressing button 1, 2, or 3
selects audio-video input 1, 2, or 3; pressing button 4
selects audio-only input 4.

• The MLS 102 VGA offers two computer-video inputs and
four selectable audio inputs. Pressing button 1 or button 2
selects audio-video input 1 or 2; pressing button 3 or
button 4 selects an audio-only input (3 or 4) .

If you select an audio-only input (input 3 or 4 for MLS 102 VGA,
input 4 for MLS 103 SV and MLS 103 V) via front panel buttons,
the video signal is muted, and the selected audio input’s LED
blinks.

Input 0 can be selected via RS-232 control only by using an SIS

command or by selecting Mute (shown here)
from the User Mode section of the control
program (if the MLS is used without an MLC).
Selecting input 0 mutes the audio from inputs 1
through 4.

For all models the Aux/Mix audio input is always enabled and
cannot be turned on or off from the front panel. The Aux/Mix

AUX/MIX

LEVEL

MediaLink Switcher

21

audio does not change when you switch between the four
selectable audio inputs.

The last selected input (including audio/video breakaway
selections) will be the active input when the MLS is powered
on.

Aux/Mix Level control — This potentiometer controls the

2

auxiliary/mix audio volume. This channel’s audio is always
output, no matter which, if any, other audio input (0, 1, 2, 3, 4) is
selected. Use a small screwdriver to turn this control while you
listen to the audio output. When the control is turned to its
counterclockwise limit (-43dB), the Aux/Mix signal will be
inaudible. You will hear the maximum Aux/Mix volume when
the control is turned to the clockwise limit (+24dB).

Once this level is set, the Aux/Mix level remains the
same no matter which input (1 through 4) is selected,
and the Aux/Mix audio can be heard at that level even if
the selectable audio inputs are muted or if audio input 0
is selected via RS-232 control.

The gain and attenuation for audio inputs 1 through 4
is adjustable only via RS-232 control (using a third
party controller, a MediaLink Controller, or the
MediaLink Control Software.)
The gain and attenuation for the Aux/Mix input is
adjustable only via the Aux/Mix Level control.

Executive mode — enabling and disabling front
panel buttons

1. To disable front panel input selection (turn executive mode
on), simultaneously press input selection buttons 1 and 4
and hold them down for three seconds. All LEDs will
light for about one second.

2. While executive mode is on, input selection can be
performed via RS-232 control or from an optional
MediaLink Controller.

3. To enable front panel input selection (turn executive mode
off), repeat step 1 (pressing and holding buttons 1 and 4).

MediaLink VersaTools Switchers • Operation

MediaLink VersaTools Switchers • Operation

3-33-2

Operation, cont’d

Troubleshooting

1. Connect the cables between the MLS and the A/V input
devices. Connect the provided power supply and a host
computer, third party control system, or MediaLink
Controller to the MLS’s MLC/RS-232 Power port.
Connect the MLS to the display device (projector) and
audio output device (tape deck, speakers).

2. Connect the control device (computer, control system, or
MLC 206), the A/V source devices, projector and audio
output device to a power source and turn them on.

3. Start the MediaLink Control Program, and set up the MLS
(and the MLC, if one is used). See chapter four.

4. Press an input button on the MLS, watch the MLS’s LEDs,
observe the display, and listen to the audio.

4a. If the input selection LED does not light when a

button is pressed, the MLS might not be receiving
power. Check the wiring at the MLS’s MLC/RS-232
Power port.

• If the conductor assignments are not correct, the

• If the wiring is correct, ensure that the power

4b. If power is present at the MLS and at the input and

output devices, but nothing happens (an A/V
switch is not detected) when a button is pressed:

• If a MediaLink Controller is part of the system, the

To set up the MLS 100 Series switcher you must use
MediaLink Control Software version 2.0 or higher.
See the second note on page 2-9. If the software version
is below 2.0, download a new version of the software
from the Extron Web site, www.extron.com.

circuits may be damaged if power is applied to the
wrong pole.

supply has been plugged in to a functional power
source.

MLC’s firmware may be too old. If it is older than
version 1.04, contact Extron for a firmware
upgrade.

The MLC to which the MLS 100 Series switcher is
connected must have MLC firmware version 1.04 or
higher. Use one of the following methods to find out the
version levels of the MLC’s firmware and the control
software.

• Connect the MLC’s RS-232 port to a computer or

RS-232 controller, and send an SIS command of Q to

the MLC. The MLC will respond with its firmware
version.

• Connect the MLC’s RS-232 port to a computer, start

the MediaLink control software, and click on Help to
display the software version, the MLC’s firmware
version, and the MLS’s firmware version.

• The audio settings may be too low. Adjust the
Aux/Mix level by turning the Aux/Mix Level
adjustment on the front panel. Adjust each
selectable input’s level by using SIS commands, a
control system, or the Switcher (MLS) Config. part
of the MediaLink Control Software.

• The input or output connectors may not be firmly
attached to the MLS, or they may be miswired.

4b. If power is present, but sound from inputs 1

through 4 isn’t audible, and if changing the audio

volume and gain/attenuation settings does not
resolve the problem, make sure that neither audio
input 0 nor audio mute is selected. Use the SIS
information (I) command or the MediaLink Control
Program to determine the audio settings.

5. Call the Extron S3 Sales and Technical Support Hotline if
the equipment still does not respond when the MLS’s
buttons are pressed.

3-4

MediaLink VersaTools Switchers • Operation

MediaLink VersaTools Switchers • Operation

3-5

Operation, cont’d

This page has been left blank intentionally.

MediaLink™ VersaTools™ Switchers

Chapter 4

4

3-6

Serial Communication

RS-232 Programmer’s Guide

Control Software for Windows

MediaLink VersaTools Switchers • Operation

Serial Communication

The MediaLink switcher can be remotely set up and controlled
via a host computer or other device (such as a control system)
attached to the rear panel MLC/RS-232 Power port.
Alternatively, the switcher can be controlled by an optional
MediaLink Controller (MLC) (connected to the MLS’s
MLC/RS-232 Power port) or by an RS-232 device acting through
the MLC. The control device (host) can use either the Extron
Simple Instruction Set
control program for Windows

™

(SIS™) commands or the graphical

®

a system that includes a MediaLink Controller, see the
MediaLink Controllers User’s Manual.

MLC

/RS-232

POWER

AB

MLS100Series
Switcher
MLC/RS-232
Power Port

+12VDC

Ground ( )

Receive (Rx)

B
A

Transmit (Tx)

MLC/RS-232 Power port pin assignments

RS-232 Programmer’s Guide

Host-to-MLS communications

SIS commands consist of one or more characters per field. No
special characters are required to begin or end a command
sequence. When the MLS determines that a command is valid,
it executes the command and sends a response to the host
device. All responses from the switcher to the host end with a
carriage return and a line feed (CR/LF = ), which signals the
end of the response character string. A string is one or more
characters.

MLS-initiated messages

When a local event such as a front panel selection or adjustment
takes place, the MLS responds by sending a message to the host.
No response is required from the host. The MLS-initiated
messages are listed here (underlined).

(c)Copyright 2002, Extron Electronics MLS 100 Series, V0.08
The MLS sends the copyright message when it first powers on.
Vx.xx is the firmware version number. The MLS 102 VGA is
used in this example.

X1

Chn
The MLS sends this response when an input is switched.

(where X1 is the input number)

. For details on use and setup of

The switcher protocol is

9600 baud
1 stop bit
no parity
no flow control.

The MLC/RS-232 Power

3.5 mm, 5-pole captive screw
connector’s pin assignments
are shown at left.

Error responses

When the MLS receives a valid SIS command, it executes the
command and sends a response to the host device. If the MLS is
unable to execute the command because the command is invalid
or it contains invalid parameters, it returns an error response to the
host. Error response codes and their descriptions are as follows:

E01 – Invalid input channel number (the number is too large)
E10 – Invalid command
E13 – Invalid value (the number is out of range/too large)
E14 – Invalid for this configuration.

Using the command/response tables

The command/response tables on the next page list valid
command ASCII codes, the MLS’s responses to the host, and a
description of the command’s function or the results of
executing the command. Unless otherwise indicated (as for the
gain commands), upper and lower case characters may be used
interchangeably in the command field.

ASCII to HEX Conversion Table

ASCII to Hex conversion table

Symbol definitions

= CR/LF (carriage return/line feed) (hex

0D 0A)

• = Space
= Escape key

Esc
X1

= Specific input number

(0 – 4 maximum)
0 = no connection
1 = input 1 & Aux/Mix
2 = input 2 & Aux/Mix
3 = input 3 & Aux/Mix
4 = input 4 (audio only) & Aux/Mix

X2

= Audio gain (per input)

0 to 24; 0dB through +24dB in 1dB
steps

= Audio attenuation (per input)

X3

0 to 18; 0dB through -18dB in 1dB
steps)

The ASCII to

•

HEX conversion
table at left is
for use with the
command/
response tables.

= Input to be adjusted (1 – 4)

X4

X5

X6

X7

X8

1 = input 1
2 = input 2
3 = input 3
4 = input 4

= Audio gain/attenuation value

(-18 through +24)

= Volume adjustment range

(0% – 100%)

= On/off status

0 = off/disable
1 = on/enable

= Switcher firmware version

(listed to two decimal places
e.g.: x.xx)

4-2

MediaLink VersaTools Switchers • Serial Communication

MediaLink VersaTools Switchers • Serial Communication

4-3

Serial Communication, cont’d

X1

X1

X1

(audio and video).

audio only.

Example: select input 4.

Select input

Select input

X1

X1

! Chn

$ Aud

X1

(host to switcher) (switcher to host)

X1

video only.

Set a single input’s gain (in dB).

X5

Select input

X1

Aud=

X4

GIn

& Vid

X1

X2

*

X4

Set an input’s attenuation

X5

Aud=

X4

Show an input’s audio level.

X5

Aud=

X4

(in dB).

Increase an input’s gain by 1dB.

Decrease an input’s gain by 1dB.

X5

gIn

Aud=+09 Example: set input 3’s gain to +9dB.

X4

Aud=

X3

*

X4

X4

*+G In

X4

Set the current input’s gain (in dB).

X5

X5

Aud=

Aud=

*G In

X4

X4

X4

*-G In

GIn

X4

X2

Set attenuation (in dB).

Increase the gain by 1dB.

Decrease the gain by 1dB.

X5

Aud=

X4

Show the audio level.

X5

X5

X5

Aud=

Aud=

Aud=

X4

X4

X4

g In

X3

Unmute all audio outputs.

Show the status of audio mute.

X7

Example: set volume to 13.

Specify the volume for the audio output.

Increase audio output.

Decrease audio output.

X6

Show the output volume.

X6

X6

X6

selections can be made from the front panel.

Lock front panel adjustments; make changes by

RS-232 only. Only input selection and volume

adjustment are available via the front panel.

Show executive mode status.

X7

V Vol

X6

Audio volume

Show the MLS’s part #.

X1 X1 X6

Audio input

Vid • Aud • Vol

Show the switcher’s firmware version.

X8

Video input # X1

is selected/active.

X6

level is .

to the factory default.

# X1 is

selected/active.

zXXX ZapXXX Reset everything (all settings and adjustments)

Esc

Example: 4! Chn4

Select an input (audio and video).

Select an audio input.

Command/response table for SIS commands

Command ASCII Command Response Additional description

Input selection

4-4

MediaLink VersaTools Switchers • Serial Communication

Select a video input.

Example: 3*9G In

Set a specific input’s audio gain.

Audio input gain/attenuation (per input)

Set a specific input’s audio attenuation.

Decrement a specific input’s gain.

View a specific input’s audio gain level.

Set current input’s audio attenuation.

Increment current input’s gain. +G In

Decrement current input’s gain. -G In

Increment a specific input’s gain.

Set current input’s audio gain.

View current input’s audio gain level. G In

Mute on 1Z Amt1 Mute all audio outputs.

Mute off 0Z Amt0

Audio mute (overall)

View the audio mute status. Z Amt

Example: 27V Vol013

Set the overall output volume.

Increment the volume. +V Vol

Decrement the volume. -V Vol

Volume adjustment (overall)

View the volume level. V Vol

Turn executive mode off. 0X Exe0 Enable front panel operation. Adjustments and

Executive mode

Turn executive mode on. 1X Exe1

MediaLink VersaTools Switchers • Serial Communication

View the executive mode status. X Exe

Example: X Exe0

Query firmware version number. Q Ver

Request the part number. N N60-497-0X

Firmware version, part number & information requests

Request general info. I (see below) Show the MLS’s status.

Zap (reset to default settings)

Zap all MLS settings/memories.

4-5

Serial Communication, cont’d

Command/response table for
special function SIS commands

The syntax for setting a special function is __ * X? # where __ is the
function number and X? is the value.

To view a function’s setting, use
__#, where __ is the function
number. In the table at left the
values of the X? variable are
different for each command/
function. These values are given
in the rightmost column.

values

X?

0 = 0.0 seconds (default), 1 = 0.5

seconds, 2 = 1.0 seconds,

... in ½ second steps up to

10 = 5.0 seconds

Example: 3.5 second RGB delay.

X?

Control Software for Windows

The included Extron MediaLink Control Program for Windows
offers another way to control the switcher via RS-232 connection
in addition to the Simple Instruction Set commands. The
control program’s graphical interface includes input selection
functions and some additional features that are only available
through the software.

To set up the MLS 100 Series switcher you must use
MediaLink Control Software version 2.0 or higher.

The control software is compatible with Windows 95/98,
Windows NT, and Windows 2000. Extron’s MediaLink Control
Program is included with the MLS, and updates can be
downloaded from the Extron Web site
(http://www.extron.com).

Installing the software

The control program is contained on a set of 3.5-inch diskettes; it
requires approximately 2 MB (megabytes) of hard disk space.

To install the software on the hard drive:

1. Run SETUP.EXE from the floppy disk.

2. Follow the instructions that appear on the screen.

By default the installation creates a C:\MediaLnk
directory, and it places two icons (MediaLnk Control Pgm
and MediaLnk Help) into a group or folder named “Extron
Electronics”.

®

4-6

# RGBDly*

X?

(host to switcher) (switcher to host) and additional descriptions

Example: 3*7# RGBDly*07

Command/response table for special function SIS commands

Command ASCII Command Response

Set the RGB delay. 3 *

Delay times

MediaLink VersaTools Switchers • Serial Communication

Using the control program

The MediaLink Help Program provides information on settings
and on how to use the control program itself. Some features are
only available via this control program. These features are
described in the sections of this chapter that correspond to the
parts of the control program where the features are found.

1. To run the control program, double-click on the MediaLnk
Control Pgm icon in the Extron Electronics
group or folder. The Comm Port Selection
menu appears on the screen.

2. Click on the comm port that is connected to the MLS’s
RS-232 port. The Extron MediaLink Control Program
windows appear. The port and firmware information are
displayed at the bottom of the screen. There are two views
available: the User Mode screen, and the Switcher (MLS)
Configuration screen.

MediaLink VersaTools Switchers • Serial Communication

4-7

Serial Communication, cont’d

User Mode

For stand-alone MLS 100 Series switchers

If an MLS 100 Series switcher is used without a MediaLink
Controller, the User Mode screen, shown below, emulates the
MLS’s front panel input selection buttons and also provides a
means of volume control. See page 3-2 for details on basic
operation.

Disable Switcher Front Panel Menus — This feature (near the

bottom of the screen) toggles the executive mode on or off
to prevent or enable making changes (input selections)
via the MLS’s front panel.

For MLS 100 Series switchers controlled by an MLC

If the MLS 100 Series switcher is connected to and controlled by
an MLC, the user mode screen will look something like what is
shown in the picture below.

4-64-64-8

Special features

Audio/video breakaway switching — To switch the audio sig-

nal separately from the video signal, check the Audio
checkbox (at the right side of the I/O Switching area) and
uncheck the Video checkbox, then select an input. The
MLS switches to that input’s audio and leaves the previ­ously selected video source active. Audio breakaway is
shown above: the video is from input 1 and the audio is
from input 2. (The corresponding SIS command is 1&2$.)

To switch the video signal without changing the audio

source, check the Video check box and
uncheck the Audio checkbox. See the
picture at left.
Selecting Mute selects input 0 (no input).

Volume Mute — Check this box (in the lower left corner) to

activate the audio mute (Amt) command. See
page 4-4 for the corresponding SIS command.

MediaLink VersaTools Switchers • Serial Communication

In this case, you must set the volume control in
the Controller (MLC) Config section to
“Switcher”, as shown at right.

MediaLink VersaTools Switchers • Serial Communication

4-9

Serial Communication, cont’d

Switcher (MLS) Config

The Switcher (MLS) Config screen, shown below, allows you to
make adjustments without having to use the front panel
controls.

In this part of the program you can:

• Set the per-input audio gain or attenuation.

• Set overall volume; this is the same as the User Mode volume
adjustment.

• Set the RGB delay period (MLS 102 VGA model only).

• Reset the switcher to factory default settings.

Saving and restoring configurations

The MLS can be configured via RS-232 communication, and the
configuration settings can be saved to a file for later use.

1. In the MediaLink Control Program, select File, then select

Save Configuration as... .

2. Save the file as

configuration files can be saved as long as each file has a
unique file name ending in .MLK.

3. To retrieve the configuration from within the MediaLink

Control Program, select File, then select Restore

Configuration from... . A set of all the switcher and audio

adjustment settings will be downloaded into the MLS.

filename.MLK. An unlimited number of

Emulation mode

The MediaLink Control Program features an emulation mode so
you can set up a MediaLink system before equipment is
available on site. In emulation mode a MediaLink Controller is
always included in the system. You select which MLS switcher
and which control modules will be connected to the MLC. For a
stand-alone MLS (without an MLC), connect the MLS directly to
the host computer for setup rather than using emulation mode.

You can save the emulated settings to a configuration file, then
load that configuration file to the switcher (or switcher and
MLC) when equipment is available.

1. Start the control program by double-
clicking on the MediaLnk Control Pgm
icon in the Extron Electronics group or
folder. The Comm Port Selection
screen (shown at right) appears.

2. Click on the Emulate radio button, then
click on OK. The Initialize Emulated
MediaLink Configuration from... dialog box appears.

3. Because you will be creating a brand new configuration,

select
Cancel
instead of
selecting a
driver file.

The Save

Emulated
MediaLink
Configuration
as... dialog

box
appears.

4. Enter a filename of your choice for storing the configuration

settings,
then select
Save.

The

Emulation
Configuration

dialog box
appears.

MediaLink VersaTools Switchers • Serial Communication

MediaLink VersaTools Switchers • Serial Communication

4-114-10

Serial Communication, cont’d

5. Select the MediaLink equipment that will be part of the
system you want to configure, then click on OK. The
Extron MediaLink Control Program windows appear.

6. Select the desired settings in each section of the program.

If you include an MLC 206 in the system, keep in mind
that IR learning cannot be performed in emulation mode.
You must have an MLC connected to the host computer.

7. To save the configuration for future use, follow steps 1 and
2 on page 4-10.

MediaLink™ VersaTools™ Switchers

Appendix A

A

Using the help program

For information on program features, press the F1 computer

For explanations of buttons or functions, click on the tabs in the
help screen to reach the desired screen. Use a mouse or the Tab
and Enter keys to select a button/function. A description and
tips on using the program will appear on screen.

Key to file names

File name Description

________.MLK User-saved MLC/MLC-MLS/MLS

4-12

MediaLink VersaTools Switchers • Serial Communication

key, or click on the Help menu within the
MediaLink control program, or double-click
on the MediaLnk Help icon in the Extron
Electronics group or folder.

configuration file. This includes adjustments/
settings. If the MLS is connected to an
MLC 206, the file will also contain whatever
driver (if any) was installed in the MLC 206 at
the time the file was saved. See the Media-

Link Controllers User’s Manual for details.

Specifications, Part Numbers,

and Accessories

Specifications

Included Parts

Accessories

Cables

Adapters

MLS 100 Series Switcher Block Diagram

Specifications, Part Numbers, and Accessories

Video — MLS 103 V/SV, MLS 102 VGA

Gain ............................................... Unity

Bandwidth .................................... 250 MHz (-3dB)

Differential phase error .............. 0.01º, at 3.58 MHz and 4.43 MHz

Differential gain error ................. 0.01%, at 3.58 MHz and 4.43 MHz

Crosstalk ....................................... -50dB @ 5 MHz

Video input — MLS 103 V/SV, MLS 102 VGA

Number/signal type

MLS 103 V ......................... 3 composite video

MLS 103 SV ....................... 3 S-video

MLS 102 VGA................... 2 VGA-UXGA RGBHV, RGBS, RGsB,

RsGsBs

Connectors

MLS 103 V ......................... 3 female BNC

MLS 103 SV ....................... 3 female 4-pin mini DIN

MLS 102 VGA................... (2) 15-pin HD female

Nominal level

MLS 103 V ......................... 1V p-p for composite video

MLS 103 SV ....................... 1V p-p for Y of S-video

0.3V p-p for C of S-video

MLS 102 VGA................... 0.7V p-p for RGB

Minimum/maximum levels ...... 0.3V to 2.0V p-p with no offset

Impedance .................................... 75 ohms

Horizontal frequency .................. 15 kHz to 150 kHz

Vertical frequency ....................... 30 Hz to 150 Hz

Return loss .................................... <-45dB @ 5 MHz

Maximum DC offset .................... 1.5V

Video output — MLS 103 V/SV, MLS 102 VGA

Number/signal type

MLS 103 V ......................... 1 composite video

MLS 103 SV ....................... 1 S-video

MLS 102 VGA................... 1 VGA-UXGA RGBHV, RGBS, RGsB,

RsGsBs

Connectors

MLS 103 V ......................... 1 female BNC

MLS 103 SV ....................... 1 female 4-pin mini DIN

MLS 102 VGA................... (1) 15-pin HD female

Nominal level

MLS 103 V ......................... 1V p-p for composite video

MLS 103 SV ....................... 1V p-p for Y of S-video

0.3V p-p for C of S-video

MLS 102 VGA................... 0.7V p-p for RGB

Minimum/maximum levels ...... 0.3V to 2.0V p-p

Impedance .................................... 75 ohms

Return loss .................................... -38dB @ 5 MHz

DC offset ....................................... ±5mV maximum with input at 0 offset

Sync — MLS 103 V/SV, MLS 102 VGA

Input type (MLS 102 VGA) ........ RGBHV, RGBS, RGsB, RsGsBs

Output type (MLS 102 VGA) ..... RGBHV, RGBS, RGsB, RsGsBs

Standards (MLS 103 V/SV) ........ TTL (RGB), NTSC 3.58, NTSC 4.43, PAL,

SECAM

Input level ..................................... 0.5V to 5.0V p-p

Output level.................................. 0.5V to 5.0V p-p, unterminated

Input impedance .......................... 75 ohms

Output impedance ...................... 75 ohms

Max input voltage ....................... 5.0V p-p

Max. propagation delay.............. 30 ns

Polarity .......................................... Positive or negative (follows input)

Audio

Gain ............................................... Unbalanced output: -6dB; balanced

output: 0dB (unity)

Frequency response ..................... 20 Hz to 20 kHz, ±0.5dB

THD + Noise ................................ <0.5% @ 1 kHz at nominal level

S/N ............................................... >90dB @ 20 Hz to 20 kHz

Crosstalk ....................................... <-65dB @ 20 Hz to 20 kHz, <-80dB @ 1

kHz and below 60 Hz, fully loaded

Stereo channel separation .......... >72dB @ 20 Hz to 20 kHz

CMRR ............................................ >75dB @ 20 Hz to 20 kHz

Audio input

Number/signal type ................... 4 stereo/mono, unbalanced (switchable)

1 mono, balanced/unbalanced aux-mix

(always active, non-switchable)
Connectors

MLS 100 A, MLS 103 V/SV (5) 3.5 mm captive screw connectors,

3 pole

MLS 102 VGA................... 2 mini stereo jacks (female tip-ring-sleeve

connectors)

(3) 3.5 mm captive screw connectors,

3 pole

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

A-3A-2

Specifications, Part Numbers, Accessories, cont’d

Impedance .................................... >10 kohms unbalanced, >20 kohms

balanced, DC coupled

Nominal level ............................... -20dBV (100mV), -10dBV (316mV), 0dBu

(0.775V), or +4dBu (1.23V); (configurable)

0dBu = 0.775 volts (RMS). 0dBV = 1 volt
+4dBu and 0dBu are professional audio line level standards.

-10dBV and -20dBV are semiprofessional, computer audio, and
consumer audio standards.

Maximum level ............................ +14dBu, (balanced or unbalanced) at

stated %THD+N

Input gain adjustment................. –18dB to +24dB, adjustable per input (via

RS-232/control software)

Aux/Mix level adjustment......... -43dB to +24dB (adjustable only via front

panel)

Audio output

Number/signal type ................... 1 stereo or mono, balanced/unbalanced

Connectors .................................... (1) 3.5 mm captive screw connector, 5 pole

Impedance .................................... 50 ohms unbalanced, 100 ohms balanced

Gain error...................................... ±0.1dB channel to channel

Maximum level (Hi-Z) ................ >+21dBu, balanced or unbalanced at

stated %THD+N

Maximum level (600 ohm) ......... >+15dBm, balanced or unbalanced at

stated %THD+N

0dBu = 0.775 volts (RMS).

An unbalanced-wired output will result in a 6dB attenuation. A
balanced-wired output will have unity (0dB) gain/attenuation.

General

Power............................................. 12VDC, 0.4 A from an optional MediaLink

Controller (MLC) or from an included

100VAC to 240VAC, 50/60 Hz, external,

autoswitchable, 12VDC, 1 A max. power

supply

Temperature/humidity .............. Storage -40° to +158°F (-40° to +70°C) /

10% to 90%, non-condensing

Operating +32° to +122°F (0° to +50°C) /

10% to 90%, non-condensing

Rack mount................................... Yes, with optional VersaTools rack shelf,

part #60-190-20; or standard 1U rack shelf,

#60-190-01

Furniture mountable with optional mini

under desk brackets, part #70-212-01

Projector mountable with optional

bracket, part #70-217-01

Enclosure type.............................. Metal

Enclosure dimensions ................. 1.7" H x 4.3" W x 3.0" D

(1U high, quarter rack width)

4.2 cm H x 11.0 cm W x 7.6 cm D

(Depth excludes connectors and buttons.)

Product weight............................. 0.7 lbs (0.3 kg)

Shipping weight ........................... 3 lbs (1.4 kg)

Vibration ....................................... ISTA/NSTA 1A in carton

(International Safe Transit Association)

Listings .......................................... UL, CUL

Compliances ................................. CE, FCC Class A, VCCI, AS/NZS, ICES

MTBF ............................................. 30,000 hours

Warranty ....................................... 3 years parts and labor

Control/remote — switcher

Serial control port ........................ RS-232, 3.5 mm, 5-pole captive screw

connector

Baud rate and protocol ............... 9600, 8-bit, 1 stop bit, no parity

Serial control pin configurations A = TX, B = RX, D = GND

Program control ........................... Extron’s control program for Windows®

Extron’s Simple Instruction Set™ – SIS™

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

Specifications are subject to change without notice.

(7.40-010803-D2)

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

A-5A-4

Specifications, Part Numbers, Accessories, cont’d

Included Parts

These items are included in each order for an MLS switcher:

Included Part number
parts to reorder

MLS 100 A 60-497-01

or

MLS 103 V 60-497-02

or

MLS 103 SV 60-497-03

or

MLS 102 VGA 60-497-04
12VDC, 1 A external power supply

USA domestic version 70-055-01

World version 70-055-02
IEC power cord
Tweeker (small screwdriver)
Rubber feet

3.5 mm, 3-pole captive screw connectors 10-319-13

3.5 mm, 5-pole captive screw connectors 10-319-10
MLS 100 Series User’s Manual 68-652-01
MediaLink Control Software 29-052-01

Accessories

These items can be ordered separately

Accessories Part number

VersaTools 1U rack shelf 60-190-20
Standard 1U rack shelf 60-190-01

or

or

Mini under-desk mounting bracket kit 70-212-01
Mini projector mounting kit 70-217-01

or

MediaLink Controller

P/S 100 power supply 60-357-01

Cables

Plenum Comm-link cable Part number

50 feet, 100 feet, 200 feet 26-461-01, -02, -03
300 feet, 400 feet 26-461-05, -04

Conductor gauges in Extron Comm-Link cables

MLC 206 (3-gang) (gray, black, white) 60-385-01, -02, -03

red & black single strands (for power/ground) 18 AWG

white & violet shielded single strands (for signals) 22 AWG

drain wire 24 AWG

Adapters

Adapters Part number

SVHSM-BNCF S-video male to

BNC female adapter (for MLS 103 SV) 26-353-01

A-6 A-7

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories

Specifications, Part Numbers, Accessories, cont’d

MLS 100 Series Switcher Block Diagram

A-8

MediaLink VersaTools Switchers • Specifications, Part #s, Accessories