MLS 306,
MLS 506, MLS 506MA, MLS 506SA
MediaLink
™
Switchers
68-598-01
Printed in the USA
This symbol is intended to alert the user of important operating and maintenance
(servicing) instructions in the literature provided with the equipment.
This symbol is intended to alert the user of the presence of uninsulated dangerous
voltage within the product's enclosure that may present a risk of electric shock.
Caution
Read Instructions • Read and understand all safety and operating instructions before using the
equipment.
Retain Instructions • The safety instructions should be kept for future reference.
Follow Warnings • Follow all warnings and instructions marked on the equipment or in the user
information.
Avoid Attachments • Do not use tools or attachments that are not recommended by the equipment
manufacturer because they may be hazardous.
Warning
Power sources • This equipment should be operated only from the power source indicated on the
product. This equipment is intended to be used with a main power system with a grounded
(neutral) conductor. The third (grounding) pin is a safety feature, do not attempt to bypass or
disable it.
Power disconnection • To remove power from the equipment safely, remove all power cords from
the rear of the equipment, or the desktop power module (if detachable), or from the power
source receptacle (wall plug).
Power cord protection • Power cords should be routed so that they are not likely to be stepped on or
pinched by items placed upon or against them.
Servicing • Refer all servicing to qualified service personnel. There are no user-serviceable parts
inside. To prevent the risk of shock, do not attempt to service this equipment yourself because
opening or removing covers may expose you to dangerous voltage or other hazards.
Slots and openings • If the equipment has slots or holes in the enclosure, these are provided to
prevent overheating of sensitive components inside. These openings must never be blocked by
other objects.
Lithium battery • There is a danger of explosion if battery is incorrectly replaced. Replace it only
with the same or equivalent type recommended by the manufacturer. Dispose of used batteries
according to the manufacturer's instructions.
Ce symbole sert à avertir l’utilisateur que la documentation fournie avec le matériel
contient des instructions importantes concernant l’exploitation et la maintenance
(réparation).
Ce symbole sert à avertir l’utilisateur de la présence dans le boîtier de l’appareil de
tensions dangereuses non isolées posant des risques d’électrocution.
Attention
Lire les instructions• Prendre connaissance de toutes les consignes de sécurité et d’exploitation avant
d’utiliser le matériel.
Conserver les instructions• Ranger les consignes de sécurité afin de pouvoir les consulter à l’avenir.
Respecter les avertissements • Observer tous les avertissements et consignes marqués sur le matériel ou
présentés dans la documentation utilisateur.
Eviter les pièces de fixation • Ne pas utiliser de pièces de fixation ni d’outils non recommandés par le
fabricant du matériel car cela risquerait de poser certains dangers.
Avertissement
Alimentations• Ne faire fonctionner ce matériel qu’avec la source d’alimentation indiquée sur
l’appareil. Ce matériel doit être utilisé avec une alimentation principale comportant un fil de
terre (neutre). Le troisième contact (de mise à la terre) constitue un dispositif de sécurité :
n’essayez pas de la contourner ni de la désactiver.
Déconnexion de l’alimentation• Pour mettre le matériel hors tension sans danger, déconnectez tous
les cordons d’alimentation de l’arrière de l’appareil ou du module d’alimentation de bureau (s’il
est amovible) ou encore de la prise secteur.
Protection du cordon d’alimentation • Acheminer les cordons d’alimentation de manière à ce que
personne ne risque de marcher dessus et à ce qu’ils ne soient pas écrasés ou pincés par des
objets.
Réparation-maintenance • Faire exécuter toutes les interventions de réparation-maintenance par un
technicien qualifié. Aucun des éléments internes ne peut être réparé par l’utilisateur. Afin
d’éviter tout danger d’électrocution, l’utilisateur ne doit pas essayer de procéder lui-même à ces
opérations car l’ouverture ou le retrait des couvercles risquent de l’exposer à de hautes tensions
et autres dangers.
Fentes et orifices • Si le boîtier de l’appareil comporte des fentes ou des orifices, ceux-ci servent à
empêcher les composants internes sensibles de surchauffer. Ces ouvertures ne doivent jamais
être bloquées par des objets.
Lithium Batterie • Il a danger d'explosion s'll y a remplacment incorrect de la batterie. Remplacer
uniquement avec une batterie du meme type ou d'un ype equivalent recommande par le
constructeur. Mettre au reut les batteries usagees conformement aux instructions du fabricant.
Safety Instructions • English
Consignes de Sécurité • Français
Sicherheitsanleitungen • Deutsch
Dieses Symbol soll dem Benutzer in der im Lieferumfang enthaltenen
Dokumentation besonders wichtige Hinweise zur Bedienung und Wartung
(Instandhaltung) geben.
Dieses Symbol soll den Benutzer darauf aufmerksam machen, daß im Inneren des
Gehäuses dieses Produktes gefährliche Spannungen, die nicht isoliert sind und
die einen elektrischen Schock verursachen können, herrschen.
Achtung
Lesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden, sollten Sie alle Sicherheits-und
Bedienungsanleitungen genau durchlesen und verstehen.
Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit des Produktes sollten Sie
aufbewahren, damit Sie im Bedarfsfall darauf zurückgreifen können.
Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungen auf dem Gerät oder in
der Benutzerdokumentation.
Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, die nicht ausdrücklich vom
Hersteller empfohlen wurden, da diese eine Gefahrenquelle darstellen können.
Vorsicht
Stromquellen • Dieses Gerät sollte nur über die auf dem Produkt angegebene Stromquelle betrieben
werden. Dieses Gerät wurde für eine Verwendung mit einer Hauptstromleitung mit einem
geerdeten (neutralen) Leiter konzipiert. Der dritte Kontakt ist für einen Erdanschluß, und stellt
eine Sicherheitsfunktion dar. Diese sollte nicht umgangen oder außer Betrieb gesetzt werden.
Stromunterbrechung • Um das Gerät auf sichere Weise vom Netz zu trennen, sollten Sie alle
Netzkabel aus der Rückseite des Gerätes, aus der externen Stomversorgung (falls dies möglich
ist) oder aus der Wandsteckdose ziehen.
Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nicht im Weg liegen und
niemand darauf treten kann oder Objekte darauf- oder unmittelbar dagegengestellt werden
können.
Wartung • Alle Wartungsmaßnahmen sollten nur von qualifiziertem Servicepersonal durchgeführt
werden. Die internen Komponenten des Gerätes sind wartungsfrei. Zur Vermeidung eines
elektrischen Schocks versuchen Sie in keinem Fall, dieses Gerät selbst öffnen, da beim Entfernen
der Abdeckungen die Gefahr eines elektrischen Schlags und/oder andere Gefahren bestehen.
Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuse aufweist, dienen diese
zur Vermeidung einer Überhitzung der empfindlichen Teile im Inneren. Diese Öffnungen dürfen
niemals von anderen Objekten blockiert werden.
Litium-Batterie • Explosionsgefahr, falls die Batterie nicht richtig ersetzt wird. Ersetzen Sie
verbrauchte Batterien nur durch den gleichen oder einen vergleichbaren Batterietyp, der auch
vom Hersteller empfohlen wird. Entsorgen Sie verbrauchte Batterien bitte gemäß den
Herstelleranweisungen.
Este símbolo se utiliza para advertir al usuario sobre instrucciones importantes de
operación y mantenimiento (o cambio de partes) que se desean destacar en el
contenido de la documentación suministrada con los equipos.
Este símbolo se utiliza para advertir al usuario sobre la presencia de elementos con
voltaje peligroso sin protección aislante, que puedan encontrarse dentro de la caja
o alojamiento del producto, y que puedan representar riesgo de electrocución.
Precaucion
Leer las instrucciones • Leer y analizar todas las instrucciones de operación y seguridad, antes de usar
el equipo.
Conservar las instrucciones • Conservar las instrucciones de seguridad para futura consulta.
Obedecer las advertencias • Todas las advertencias e instrucciones marcadas en el equipo o en la
documentación del usuario, deben ser obedecidas.
Evitar el uso de accesorios • No usar herramientas o accesorios que no sean especificamente
recomendados por el fabricante, ya que podrian implicar riesgos.
Advertencia
Alimentación eléctrica • Este equipo debe conectarse únicamente a la fuente/tipo de alimentación
eléctrica indicada en el mismo. La alimentación eléctrica de este equipo debe provenir de un
sistema de distribución general con conductor neutro a tierra. La tercera pata (puesta a tierra) es
una medida de seguridad, no puentearia ni eliminaria.
Desconexión de alimentación eléctrica • Para desconectar con seguridad la acometida de
alimentación eléctrica al equipo, desenchufar todos los cables de alimentación en el panel trasero
del equipo, o desenchufar el módulo de alimentación (si fuera independiente), o desenchufar el
cable del receptáculo de la pared.
Protección del cables de alimentación • Los cables de alimentación eléctrica se deben instalar en
lugares donde no sean pisados ni apretados por objetos que se puedan apoyar sobre ellos.
Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personal calificado. En el
interior no hay partes a las que el usuario deba acceder. Para evitar riesgo de electrocución, no
intentar personalmente la reparación/mantenimiento de este equipo, ya que al abrir o extraer las
tapas puede quedar expuesto a voltajes peligrosos u otros riesgos.
Ranuras y aberturas • Si el equipo posee ranuras o orificios en su caja/alojamiento, es para evitar el
sobrecalientamiento de componentes internos sensibles. Estas aberturas nunca se deben obstruir
con otros objetos.
Batería de litio • Existe riesgo de explosión si esta batería se coloca en la posición incorrecta. Cambiar
esta batería únicamente con el mismo tipo (o su equivalente) recomendado por el fabricante.
Desachar las baterías usadas siguiendo las instrucciones del fabricante.
Instrucciones de seguridad • Español
Precautions
i
MediaLink Switchers • Table of Contents
Table of Contents
Chapter 1 • Introduction ....................................................................................................... 1-1
About the MediaLink Switchers .................................................................................. 1-2
Features and Options........................................................................................................ 1-2
Standard features .............................................................................................................. 1-2
Chapter 2 • Installation .......................................................................................................... 2-1
UL/Safety Requirements .................................................................................................. 2-2
Mounting the Switcher.................................................................................................... 2-2
Tabletop use ....................................................................................................................... 2-2
Rack mounting ................................................................................................................... 2-2
MLS 306 Rear Panel and Cabling................................................................................. 2-2
Power connection .............................................................................................................. 2-3
Input connections .............................................................................................................. 2-3
Video output connections ................................................................................................. 2-3
Audio output connections ................................................................................................ 2-4
Control connections........................................................................................................... 2-4
MLS 506, MLS 506MA, and MLS 506SA
Rear Panels and Cabling.................................................................................................. 2-6
Power connection .............................................................................................................. 2-6
Input connections .............................................................................................................. 2-6
Video output connections ................................................................................................. 2-7
Audio output connections ................................................................................................ 2-8
Audio processing connections — MLS 506MA, MLS 506SA only................................... 2-10
Control connections......................................................................................................... 2-11
Setting the -6dB Jumpers ............................................................................................. 2-13
Application Diagrams ..................................................................................................... 2-14
Chapter 3 • Operation ............................................................................................................. 3-1
Front Panel Features and Basic Operation ............................................................. 3-2
Menus, Configuration, and Adjustments ................................................................... 3-4
Moving through menus by using front panel controls ................................................... 3-4
Menu overview .................................................................................................................. 3-4
Menu details ...................................................................................................................... 3-6
System reset ....................................................................................................................... 3-6
Executive mode .................................................................................................................. 3-7
Remote Control of the MLS ........................................................................................... 3-7
Chapter 4 • Serial Communication................................................................................. 4-1
RS-232 Programmer’s Guide .......................................................................................... 4-2
Host-to-MLS communications ........................................................................................... 4-2
Command/response table for SIS commands ................................................................... 4-3
Command/response table for special function SIS commands ........................................ 4-6
ii MediaLink Switchers • Table of Contents
Table of Contents, cont’d
68-598-01 Rev. A
Printed in the USA
10 01
All trademarks mentioned in this manual are the properties of their respective owners.
Control Software for Windows.................................................................................... 4-7
Installing the software ...................................................................................................... 4-7
Using the control program ................................................................................................ 4-7
User Mode ........................................................................................................................... 4-7
Switcher (MLS) Config ........................................................................................................ 4-8
Saving and restoring configurations ................................................................................ 4-9
Using the help program .................................................................................................. 4-10
Key to file names ............................................................................................................. 4-10
Appendix A • Specifications, Part Numbers, and Accessories.................... A-1
Specifications....................................................................................................................... A-2
Part Numbers and Accessories .................................................................................... A-5
Included Parts.................................................................................................................... A-5
Accessories......................................................................................................................... A-5
Appendix B • Labeling ............................................................................................................B-1
Labeling Buttons on the Switcher..............................................................................B-2
Button-Label Generator Software..............................................................................B-2
Installing the software ...................................................................................................... B-2
Using the software to make labels ...................................................................................B-2
Label templates ...................................................................................................................B-3
MediaLink Switchers
1
Chapter One
Introduction
About the MediaLink Switchers
Features
MediaLink Switchers • Introduction1-2
Introduction
About the MediaLink Switchers
The Extron MediaLink™ switchers (MLS 306, MLS 506, MLS 506MA [70V/100V],
and MLS 506SA) are a family of rack-mountable, six-input (three video/S-video,
three RGB/computer video) switchers with audio control. The MLS 506, MLS 506MA,
and MLS 506SA can also accept component video input. Each can be used in stand-
alone applications or can be connected to a MediaLink Controller (MLC 206) to add
control functions for integration into small to mid-sized audio-visual systems.
“MLS”, “MediaLink Switcher”, and “switcher” will be used interchangeably in this
manual to refer to all models of MediaLink switchers.
Features and Options
Standard features
Flexible control options — The MediaLink switchers can be controlled via RS-232
connection to a third party control system or an Extron MediaLink Controller.
They can also be controlled by contact closure devices.
Audio volume control — All MLS models offer audio preamp volume adjustment
(attenuation) via a front panel rotary knob.
Bass and treble control — The bass and treble levels can be set separately for each
audio input.
Audio amplification (MLS 506MA and MLS 506SA only) — The MLS 506MA and
MLS 506SA offer amplified outputs and an effects loop that allows you to add
a device such as an equalizer into the system ahead of the amplified audio
output.
Customizable input labeling — Customized input selection button labels can be
created by using a labeling machine such as a Brother P-touch labeler, or you
can use Extron software to create and print labels.
Executive mode — You can set the switcher to executive mode to prevent changes
to settings from being made from the front panel controls. When executive
mode is active, only input selection can be performed from the front panel.
Triple-Action Switching
™
— When the MLS switches between RGB inputs, the
screen goes black briefly (you set the delay time) while the display locks on to
the new input’s sync signal, then the RGB picture is displayed without glitches.
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
LR LR LR LR LR LR
LR
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
AUX/MIXEFFECTS
LR
SEND
LR
RETURN
MLC/IR RS232
CONTACT CLOSURE
STEREO AMPLIFIED OUTPUT
LEFT RIGHT
MLS 506SA
MediaLink Switcher
VCRDVD
123456
MAC
CELL CAMERA
WORK
MENU NEXT
VOLUME
CLIP
ADJUST
DOC
TUNER
MIX
ABC
AUDIO OUT
FIXEDVARIABLE
LRLR
MLS 306
MediaLink Switcher
VCRDVD
123456
MAC
CELL CAMERA
WORK
MENU NEXT
VOLUME
ADJUST
DOC
TUNER
100-240V 0.2A 50/60 Hz
.5A MAX
R
Y/C
BGH
AUDIO OUT
FIXEDVARIABLE
INPUT 1
V
VID
INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6
RGBHV
OUTPUTS
MLC/IR
RS232
CONTACT CLOSURE
ABC
LR LR LR LR LR LR
LRLR
MLS 306 MediaLink Switcher
MLS 506SA MediaLink Switcher
MediaLink Switchers
2
Chapter Two
Installation
UL/Safety Requirements
Mounting the Switcher
MLS 306 Rear Panel and Cabling
MLS 506, MLS 506MA, and MLS 506SA Rear Panels and Cabling
Setting the -6dB Jumpers
Application Diagrams
MediaLink Switchers • Installation2-2
Installation
MLS 306 Rear Panel and Cabling
100-240V 0.2A 50/60 Hz
.5A MAX
R
Y/C
BGH
AUDIO OUT
FIXEDVARIABLE
INPUT 1
V
VID
INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6
RGBHV
OUTPUTS
MLC/IR
RS232
CONTACT CLOSURE
ABC
LR LR LR LR LR LR
LRLR
1
2 3 4 5 6
7 8 9
MLS 306 Rear Panel
MLS 506
MediaLink Switcher
VCRDVD
1 2 3 456
MAC
CELL CAMERA
WORK
MENU NEXT
VOLUME
CLIP
ADJUST
DOC
TUNER
MIX
UL/Safety Requirements
The Underwriters Laboratories (UL) requirements listed below pertain to the safe
installation and operation of a MediaLink Switcher.
1. 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.
2. Clean the switcher only with a dry cloth.
3. Do not install the switcher near any heat source, such as a radiator, heat
register, stove, or another apparatus (including amplifiers) that produces heat.
4. Unplug the switcher during lightning storms or when it will be unused for
long periods.
Mounting the Switcher
Tabletop use
Each MLS switcher comes with rack mounting brackets and rubber feet. For table-
top use, attach a self-adhesive rubber foot to each corner of the bottom of the unit.
Rack mounting
For rack mounting, do not install the rubber feet. If you need to change the settings
of the -6dB internal jumpers (to apply a -6dB attenuation to audio ouput), and set
the jumpers before rack mounting the switcher. See
page 2-12 for details on the jumpers.
Attach the provided rack mounting brackets
to the switcher with machine screws, as
shown at right, then fasten the
switcher to the rack using the
supplied machine screws.
For the models with
audio amplification
(MLS 506MA/SA) we
recommend allowing one
rack unit of space
(1.75”/4.5 cm) above and
below the switcher for air
circulation to prevent
overheating. There is no
cooling fan in the MLS
switcher.
Rack mounting the MediaLink Switcher
2-3MediaLink Switchers • Installation
Power connection
1
AC power connector and power indicator LED — Plug a standard IEC power
cord into this connector to connect the switcher to a 100 to 240VAC, 50 Hz or
60 Hz power source. The LED ( ) lights while the MLS is receiving power.
Input connections
2
Inputs 1–3 — For inputs 1, 2, and 3, connect a cable from the video source to
either (choose one)
• the BNC connector (composite video) or
• the 4-pin mini DIN connector (S-video ).
Input configuration is not needed for these inputs.
For audio input, wire the audio input connector as shown in the following
illustration.
LR
LR
LR
LR
LR
LR
Unbalanced Stereo Input
Tip
Sleeve
Tip
Sleeve
Balanced Stereo Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Stereo Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
600 ohms
Unbalanced Mono Input
Tip
Sleeve
Tip
Sleeve
Balanced Mono Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Mono Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
3
Inputs 4–6 — For inputs 4, 5, and 6, connect a computer to the 15-pin HD
connector for RGB computer video input.
Each input’s audio source can be connected to either the female 3.5 mm mini
stereo jack (unbalanced input), or the 3.5 mm, 5-pole captive screw connector
(balanced or unbalanced input).
Wire the stereo jack audio input connectors as
shown at right. Wire the captive screw
connectors as shown above in
2
.
Video output connections
4
RGB computer video outputs — Connect a cable from the 15-pin HD
connector or the five BNC connectors to the projector for computer video
output from inputs 4–6. The output signal will be in the same format
(RGBHV, RGBS, RGsB, RsGsBs) as the input signal. The signal is switched,
but not processed. The two RGB video outputs (15-pin HD and BNC
connectors) are simultaneously active. Cables can be connected between the
projector and one, some, or all of the switcher’s video outputs.
Cable the BNC connectors according to the signal format as shown below.
RGBSRGBHV RGsB
(Sync on Green)
,
RsGsBs
RBGHV RBGHV RBG HV
5
S-video (Y/C) output — Connect a cable from these BNCs to the projector (Y/
luma on left, C/chroma on the right) for S-video output.
6
Composite video (Vid) output connector — Connect a cable from this BNC
connector to the projector for composite video output.
Tip (+) Sleeve (Gnd)
Tip (L, +)
Ring (R, -)
Sleeve (Gnd)
Installation, cont’d
MediaLink Switchers • Installation2-4
Audio output connections
7
Audio Out(put) connectors — Connect an audio output device to either
connector for balanced or unbalanced stereo audio output. A device such as a
tape recorder can be connected to the Fixed output while a power amplifier
can be connected to the Variable output. Wire each captive screw connector as
shown below.
Unbalanced Output
Tip
See Caution
Sleeve (s)
Tip
See Caution
Balanced Output
Tip
Ring
Sleeve (s)
Tip
Ring
LR
AUDIO OUT
AUDIO OUT
LR
CAUTION
Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal will damage the audio output circuits.
The Fixed connector outputs audio at a fixed level and is unaffected by
changes made via the front panel Volume/Adjust knob. The Variable
connector outputs audio that can be attenuated by turning the Volume knob.
Control connections
8
MLC/IR port — Connect a cable between this port and an optional Extron
MLC 206 MediaLink Controller or an optional IR Link IR signal repeater.
• The MLC provides remote control of input switching and volume.
• The IR Link accepts modulated IR signals from a remote control so the
remote control can be used for selecting the switcher’s inputs.
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 IR Link or
an MLC 206 as shown below.
MLC/IR
ABC
Switcher
rear panel
MLC/IR port
MLS 306 Rear Panel
MLS 306 Rear Panel
MediaLink Switcher to an IR Link
100-240V 0.2A 50/60 Hz
.5A MAX
R
Y/C
BGH
AUDIO OUT
FIXED VARIABLE
INPUT 1
V
VID
INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6
RGBHV
OUTPUTS
MLC/IR
RS232
CONTACT CLOSURE
ABC
LR LR LR LR LR LR
LRLR
100-240V 0.2A 50/60 Hz
.5A MAX
R
Y/C
BGH
AUDIO OUT
FIXED VARIABLE
INPUT 1
V
VID
INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6
RGBHV
OUTPUTS
MLC/IR
RS232
CONTACT CLOSURE
ABC
LR LR LR LR LR LR
LRLR
MediaLink Switcher to an MLC 206
MLC/IR
ABC
MediaLink
Switcher
rear panel
MLC/IR port
NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
MLC
MLS/Power
port
Ground ( )
+12VDC
Transmit (Tx)
B
Receive (Rx)
A
AB
MLS
/
Power
Transmit (Tx)
Receive (Rx)
+12VDC
Ground ( )
B
A
NOTE The switcher provides
power to the controller.
ABCDE ABC
IR
Display/Source Control
Extron Switcher Control
Relays IR/ RCM
RS-232
DE ABC ABD
1A 1B 2A 2B 3A 3B
123456
Tally Out
MLS
/Power
33-644-01 A
07 01
Printed in the
USA
MLC 206 Bottom Panel
SIGNAL
IR LINK
Ground ( )
+12VDC
IR (IR Link)
C
IR Link
MLA-Remote
IR Link
port
IR
ABCDE
D
2-5MediaLink Switchers • Installation
Do not connect RS-232 control devices to the MLC/IR 5-pole captive screw
connector and to the 9-pin RS-232/Contact Closure port simultaneously. A
conflict may occur.
Connect devices to both ports at the same time only if
• the 9-pin connector is used for contact closure and
• the MLC/IR port is used for RS-232.
9
RS-232/Contact Closure port — This port can function as an RS-232 port or as
a contact closure port. Do not connect RS-232 devices to both this and the
MLC/IR port. See the above note.
Pin
RS-232
function
Description
Contact closure
1 – Input 1 Input 1
2 Tx Transmit data –
3 Rx Receive data –
4 – Input 2 Input 2
5 Gnd Signal ground –
6 – Input 3 Input 3
7 – Input 4 Input 4
8 – Input 5 Input 5
9– Input 6 Input 6
DB9 Pin Locations
Female
51
96
• For a stand-alone MLS switcher, connect a cable from the host computer
or a third party control system to this 9-pin D connector to set up and
remotely control the switcher. Alternatively, connect a contact closure
keypad to this connector for remote control of input selection.
• For an MLS switcher slaved to an MLC controller, connect a cable from
the MLC’s MLS/Power port to the switcher’s MLC/IR connector (not to
this 9-pin RS-232 port). Once the system has been cabled and set up via
the Windows-based software, the MLC or a host computer
communicating through the MLC can be used to remotely control the
switcher. Refer to chapter four of the MLC 206 User’s Manual and the
MediaLink Control Program help file for details on configuring an MLC-
MLS system.
CAUTION
If the switcher is connected to an MLC 206 controller via the MLC/IR
port, do not connect an RS-232 device to the MLS’s 9-pin RS-232/Contact
Closure port. Conflicts between RS-232 signals received from both ports
could cause system disruptions.
When an MLC 206 is connected to the MLC/IR port, a contact closure
device may be attached to the 9-pin connector.
Installation, cont’d
MediaLink Switchers • Installation2-6
MLS 506, MLS 506MA, and MLS 506SA
Rear Panels and Cabling
Power connection
1
AC power connector and power indicator LED — Plug a standard IEC power
cord into this connector to connect the switcher to a 100 to 240VAC, 50 Hz or
60 Hz power source. The LED ( ) lights while the MLS is receiving power.
Input connections
2
Inputs 1–3 — For inputs 1, 2, and 3, connect cables from the video sources to
the MLS’s input BNC connectors according to the video format as shown in
the following illustration. You must also select between “Vid” (for composite
video or S-video) and “YUV” (for component video) in the LCD menu or via
the Windows-based setup program. See pages 3-5, 3-6, and 4-9.
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
LR LR LR
LR
AUX/MIXEFFECTS
LR
SEND
LR
RETURN
MLC/IR RS232
CONTACT CLOSURE
ABC
AUDIO OUT
FIXEDVARIABLE
LRLR
L LRR LR
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
LR LR LR
MLC/IR RS232
CONTACT CLOSURE
ABC
AUDIO OUT
FIXEDVARIABLE
LRLR
L LRR LR
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
LR LR LR LR LR LR
LR
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
AUX/MIXEFFECTS
LR
SEND
LR
RETURN
MLC/IR RS232
CONTACT CLOSURE
STEREO AMPLIFIED OUTPUT
LEFT RIGHT
ABC
AUDIO OUT
FIXEDVARIABLE
LRLR
1
2 3 4 5 6 7
9 11
11
11
10 12 13
1
2 3 4 5 6 8
9 10 12 13
1
2 3 4 5 6
12 13
MLS 506 Rear Panel
MLS 506 MA Rear Panel
MLS 506 SA Rear Panel
2-7MediaLink Switchers • Installation
VIDEO
Y
C
R-Y
B-Y
VIDEO
Y
C
R-Y
B-Y
VIDEO
Y
C
R-Y
B-Y
Component
video
(R-Y, Y, B-Y)
S-video
(Y, C)
Composite
video
Video input connections for MLC 506/506MA/506SA inputs 1–3
For audio input, wire the audio input connector as shown below.
LR
LR
LR
LR
LR
LR
Unbalanced Stereo Input
Tip
Sleeve
Tip
Sleeve
Balanced Stereo Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Stereo Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
600 ohms
Unbalanced Mono Input
Tip
Sleeve
Tip
Sleeve
Balanced Mono Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Mono Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
3
Inputs 4–6 — For inputs 4, 5, and 6, connect a computer to the
appropriate BNC connectors for RGB computer video input.
RGBHV
(separate
H & V sync)
RGBS
(composite
sync)
RGsB/RsGsBs
(sync on green; or
sync on red, green, & blue)
RH/
HV
G
V
B
RH/
HV
G V
B
R H/
HV
G V
B
Connect each input’s stereo audio source to the 3.5 mm, 5-pole captive screw
connector for balanced or unbalanced input. Wire the audio input connectors
as shown above in
2
.
Video output connections
4
RGB computer video output — Connect coaxial cables from these five BNC
connectors to the projector for computer video output from inputs 4–6. Cable
the BNC connectors according to the signal format as shown in the following
illustration. The output signal will be in the same format (RGBHV, RGBS,
RGsB, RsGsBs) as the input signal. The signal is switched, but not processed.
Cables can be connected between the projector and one, some, or all of the
switcher’s video outputs.
Installation, cont’d
MediaLink Switchers • Installation2-8
Cable the BNC connectors according to the signal format as shown below.
RGBHV
(separate
H & V sync)
RGBS
(composite
sync)
RGsB/RsGsBs
(sync on green; or
sync on red, green, & blue)
RH/
HV
G
V
B
RH/
HV
G V
B
R H/
HV
G V
B
RGB output connections for MLC 506/506MA/506SA
5
Component video (YUV) output — Connect a cable from these three BNC
connectors to the projector for component output.
6
Composite video (Video) and S-video outputs — Connect a cable from the
top BNC connector for composite video output to the projector. Connect a
cable from the lower two BNC connectors to the projector for S-video output.
Audio output connections
7
Mono Amplified Output (MLS 506MA only) — Cable speakers to this
output for 30 watt amplified mono audio output. This output provides a
mono signal even if the input is a stereo signal. The Audio Out captive screw
connectors (
11
) can output stereo audio.
Follow the appropriate Mono Amplified Output wiring diagram for the type
of load you want
to use: 4 ohm,
8 ohm, or a
distributed 70 volt
or 100 volt
(depending on the
model) system.
The 70 volt model
is shown here; the
wiring is the same
for both versions
of the MLS 506MA.
Connecting a 4 ohm load to the mono amplified ouput
8 Ohm Load
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
Ground ( )
Mono +
Two 8 ohm speakers in
parallel make a 4 ohm load.
4 Ohm Load
4 Ohm Total Load
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
Ground ( )
Ground ( )
Mono +
Mono +
2-9MediaLink Switchers • Installation
Two 4 ohm speakers in
series make an 8 ohm load.
8 Ohm Total Load
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
Ground ( )
Mono +
Connecting an 8 ohm load to the mono amplified output
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 100V
Ground ( )
70V
or
100V
70V
or
100V Speakers
(depending
on the model)
Connecting a 70 or 100 volt system to the mono amplified output
CAUTION
Connect a 70 volt speaker system to the 70 volt model, and connect a 100
volt speaker system to the 100 volt model. Connecting a 70 volt speaker
system to the 100 volt model can cause damage to the switcher and
speakers and create a safety hazard.
8
Stereo Amplified Output (MLS 506SA only) — Cable speakers to this output
for 30 watt amplified stereo audio output. Wire the connector as shown
below for stereo output to 4 ohm or 8 ohm loads.
4 Ohm or
8 Ohm
4 Ohm or
8 Ohm
STEREO AMPLIFIED OUTPUT
LEFT RIGHT
Right –
Right +
Left –
Left +
NOTE You must also select the appropriate
speaker load (4 ohm or 8 ohm) from
the SpkrLoad submenu of the Audio
Settings LCD menu or via the
control software.
Stereo amplified output:
30 watts per channel into a 4 ohm or 8 ohm load.
Installation, cont’d
MediaLink Switchers • Installation2-10
EFFECTS
LR
SEND
LR
RETURN
Left
Right
Gnd ( )
Right
Left
Gnd ( )
Audio Processing
Device
11
Audio Out(put) connectors — Connect an audio output device to either
connector for balanced or unbalanced audio output. A device such as a tape
recorder can be connected to the Fixed output while speakers can be connected
to the Variable output. Wire each captive screw connector as shown below.
Unbalanced Output
Tip
See Caution
Sleeve (s)
Tip
See Caution
Balanced Output
Tip
Ring
Sleeve (s)
Tip
Ring
LR
AUDIO OUT
AUDIO OUT
LR
CAUTION
Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal will damage the audio output circuits.
The Fixed connector outputs audio at a fixed level and is unaffected by
changes made via the front panel Volume/Adjust knob. The Variable
connector outputs audio that can be attenuated by turning the Volume knob.
These preamp outputs can be set for mono or stereo output via the front panel
menu or the control software.
Audio processing connections — MLS 506MA, MLS 506SA only
9
Effects connectors (Send, Return) — These two 3.5 mm, 3-pole captive screw
connectors allow the selected audio signal to be looped through an optional
recording device or equalizer before being sent to the main Audio Output (
11
)
(preamp outputs) or the amplified audio output (
7
or
8
).
We recommend using shielded cables no longer
than 10 feet (3 meters). These connectors should be
wired as shown at right.
An active, unbalanced signal is always available at
the Send connector. The Return connector accepts
the unbalanced signal that has been routed through
an external device. In order for the
Return connector to accept an incoming/
returning audio signal, you must enable
the Return port via the front panel LCD
menu (see pages 3-5 and 3-6) or the
Windows-based setup program.
10
Aux/Mix input connector — An auxiliary balanced or unbalanced line level
audio signal input at this connector can be mixed with the signal from the
selected audio input. Use the front panel Mix knob to control the level of this
auxiliary signal. Wire the connector as shown below, which is the same as the
wiring for audio inputs 1–6.
LR
LR
LR
LR
LR
LR
Unbalanced Stereo Input
Tip
Sleeve
Tip
Sleeve
Balanced Stereo Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Stereo Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
600 ohms
Unbalanced Mono Input
Tip
Sleeve
Tip
Sleeve
Balanced Mono Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Mono Input
(high impedance)
(high impedance) (600 ohms)
600 ohms
2-11MediaLink Switchers • Installation
Control connections
12
MLC/IR port — This port allows you to provide remote control of the
switcher. Connect a cable between this port and an optional Extron MLC 206
MediaLink Controller or an optional IR Link IR signal repeater.
• The MLC provides remote control of input switching and volume.
• The IR Link accepts modulated IR signals from a remote control so the
remote control can be used for selecting the switcher’s inputs.
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 IR Link or
an MLC 206 as shown below.
MLS 506MA Rear Panel
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
LR LR LR
LR
AUX/MIXEFFECTS
LR
SEND
LR
RETURN
MLC/IR RS232
CONTACT CLOSURE
ABC
AUDIO OUT
FIXED VARIABLE
LRLR
L LRR LR
MLC/IR
ABC
MLS 506MA Rear Panel
MediaLink Switcher to an IR Link
MediaLink Switcher to an MLC 206
100-240V 0.2A 50/60 Hz
.5A MAX
INPUT 1
VIDEO
Y
C
R-Y
B-Y
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
INPUT 3
VIDEO
Y
C
R-Y
B-Y
INPUT 4
RH/
HV
G
V
B
INPUT 5
RH/
HV
G
V
B
INPUT 6
RH/
HV
G
V
B
RGB
RH/
HV
G
V
B
4 ohm
MONO AMPLIFIED OUTPUT
COMM 8 ohm 70V
LR LR LR
LR
AUX/MIXEFFECTS
LR
SEND
LR
RETURN
MLC/IR RS232
CONTACT CLOSURE
ABC
AUDIO OUT
FIXED VARIABLE
LRLR
L LRR LR
Switcher
rear panel
MLC/IR port
IR Link
port
NOTE If you use cable that has a
drain wire, tie the drain wire
to ground at both ends.
ABCDE ABC
IR
Display/Source Control
Extron Switcher Control
Relays IR /RCM
RS-232
DE ABC ABD
1A 1B 2A 2B 3A 3B
123456
Tally Out
MLS
/Power
33-644-01 A
07 01
Printed in the
USA
MLC 206 Bottom Panel
Ground ( )
+12VDC
IR (IR Link)
C
IR Link
MLA-Remote
SIGNAL
IR LINK
MLC/IR
ABC
MediaLink
Switcher
rear panel
MLC/IR port
NOTE The switcher provides
power to the controller.
MLC
MLS/Power
port
Ground ( )
+12VDC
Transmit (Tx)
B
Receive (Rx)
A
AB
MLS
/
Power
Transmit (Tx)
Receive (Rx)
+12VDC
Ground ( )
B
A
IR
ABCDE
D
If the switcher is connected to an MLC 206 controller via the MLC/IR port, do
not connect an RS-232 device to the MLS’s 9-pin RS-232/Contact Closure
port. The 9-pin D and 5-pole captive screw connectors are both for RS-232
control.
Connect devices to both ports at the same time only if
• the 9-pin connector is used for contact closure and
• the MLC/IR port is used for RS-232.
13
RS-232/Contact Closure port — This port can function as an RS-232 port or as
a contact closure port. Do not connect RS-232 devices to both this and the
MLC/IR port. See the above note.
Installation, cont’d
MediaLink Switchers • Installation2-12
Pin
RS-232
function
Description
Contact closure
1 – Input 1 Input 1
2 Tx Transmit data –
3 Rx Receive data –
4 – Input 2 Input 2
5 Gnd Signal ground –
6 – Input 3 Input 3
7 – Input 4 Input 4
8 – Input 5 Input 5
9– Input 6 Input 6
DB9 Pin Locations
Female
51
96
• For a stand-alone MLS switcher, connect a cable from the host computer
or a third party control system to this 9-pin D connector to set up and
remotely control the switcher. Alternatively, connect a contact closure
keypad to this connector for remote control of input selection.
• For an MLS switcher slaved to an MLC controller, connect a cable from
the MLC’s MLS/Power port to the switcher’s MLC/IR connector (not to
the 9-pin RS-232 port). Once the system has been cabled and set up via
the Windows-based software, the MLC or a host computer communicat-
ing through the MLC can be used to remotely control the switcher. Refer
to chapter four of the MLC 206 User’s Manual and the MediaLink Control
Program help file for details on configuring an MLC-MLS system.
CAUTION
If the switcher is connected to an MLC 206 controller via the MLC/IR
port, do not connect an RS-232 device to the MLS’s 9-pin RS-232/Contact
Closure port. Conflicts between RS-232 signals received from both ports
could cause system disruptions.
When an MLC 206 is connected to the MLC/IR port, a contact closure
device may be attached to the 9-pin connector.
Setting the -6dB Jumpers
In the MLS switchers, when audio signals are converted from an unbalanced input
to a balanced output, an additional +6dB gain is applied to the output signal. To
remove the +6dB gain from the balanced output or to apply a 6dB attenuation to
unbalanced output, jumper headers have been applied to pins inside the switcher.
The jumper headers can be removed if you would like to restore the +6dB gain.
The -6dB attenuation can be set separately for the left and right audio channels by
removing one of the jumper headers.
Input signal
Output signal
Gain/attenuation
Gain/attenuation
with jumpers without jumpers
Unbalanced Unbalanced -6dB 0dB
Unbalanced Balanced 0dB +6dB
Balanced Unbalanced -6dB 0dB
Balanced Balanced 0dB +6dB
CAUTION
Changes to settings inside the unit must be performed by authorized
service personnel only.
Follow these steps to set the -6dB jumpers in any MediaLink Switcher.
1. Disconnect the AC power cord from the MLS to remove power from the unit.
To prevent electric shock, always unplug the MLS switcher from the AC
power source before opening the enclosure.
2-13MediaLink Switchers • Installation
2. Remove the switcher from the rack, or furniture and set it on a level, stable
surface.
3. Remove the cover of the switcher (the top half of the enclosure) by removing
the screws, then lifting the cover straight up. Set the cover down on a level
surface, and save the screws for later use.
CAUTION
Do not touch any switches or other electronic components inside the
switcher. Doing so could damage the switcher. Electrostatic discharge
(ESD) can damage IC chips even though you cannot feel it. You must be
electrically grounded before proceeding with jumper installation or
replacement. A grounding wrist strap is recommended.
4. Locate the pairs of pins labeled JMP1 and JMP2 on the circuit board, as
shown in the boxed area of the following picture, which shows the pins with
the jumpers already set for the -6dB attenuation. The MLS 506MA is shown in
the example below, but these jumpers are in the same location in all models.
MLS 506MA Rear Panel (Top View)
MLS 506MA Front Panel
(Top View)
5. After you are electrically
grounded, place a jumper on
the pins for the audio channel to
which the -6dB attenuation will
be applied, or remove a jumper
to remove the attenuation.
• JMP1 is for the left audio
channel.
• JMP2 is for the right audio
channel.
The picture at right shows
jumpers set for both left and
right channels.
JMP1 and JMP2 -6dB Audio Jumpers
6. Replace the top cover on the switcher, and fasten it with the screws that were
removed in step 3.
7. Rack mount the switcher or mount it into the furniture.
8. Reconnect the AC power cord.
Installation, cont’d
MediaLink Switchers • Installation2-14
PC Computer
RS-232 Control
70V Mono Distribution
Projector Control
100-240V 0.2A 50/60 Hz
R
Y/C
BG
H
AUDIO OUT
INPUT 1
L
R
V
VID
INPUT 2
L
R
INPUT 3
INPUT 4
LR
L
R
INPUT 5
L
R
INPUT 6
RGBHV
L
R
OUTPUTS
L R
COMM LINK
A
B
C
D
E
RS232
CONTACT CLOSURE
Extron MLS 306
Laptop
w/ Audio
or
RGB Document
Camera
VCR
DVD
Projector
Audio
Amplifier
Extron
MediaLink Controller
MLC 206
DISPLAY
POWER
VOLUME
MAX/
MIN
VCR
DVD
Laptop
BUFFERED
LOCAL MONITOR
COMPUTER
INPUT
ID PIN11
ID PIN 4
P/2 DA2 MT
Extron
P/2 DA2 MT
PC Audio
Input
Extron MLC 206
VCR
DVD
Projector
Stereo Amplified Output
Extron
MLS 506SA
RS-232 Control
Projector Control
100-240V 0.2A 50/60 Hz
AUDIO OUT
INPUT 1
VIDEO
Y
C
R-Y
B-Y
L
R
YUV
Y
R-Y
B-Y
VIDEO
S-VIDEO
Y
C
INPUT 2
VIDEO
Y
C
R-Y
B-Y
L R
INPUT 3
VIDEO
Y
C
R-Y
B-Y
L
R
INPUT 4
R
H/
HV
G V
B
L
R
INPUT 5
R H/
HV
G V
B
L
R
INPUT 6
R H/
HV
G V
B
L R
RGB
R
H/
HV
G V
B
L R
AUX/MIX
LR
EFFECTS
L
R
SEND
L
R
RETURN
COMM LINK
A
B
C
D
E
RS232
CONTACT CLOSURE
4 ohm
MONO AMPLIFIED OUTPUT
COMM
8 ohm
70V
PC Computer
BUFFERED LOCAL
MONITOR OUTPUT
INPUT
H. SHIFT
RGB 109 xi
VGA INTERFACE W /ADSP
ID PIN 4
ID PIN 11
Extron
MediaLink Controller
MLC 206
DISPLAY
POWER
VOLUME
M
A
X/
M
IN
VCR
DVD
Laptop
EXTENDER WM
AUDIO
RGB Document
Camera
Video Camera
Laptop
w/ Audio
Wall Plate
Extron MLC 206 or
xi
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