Extron electronic MLS 406, MLS 406SA, MLS 406MA User Manual

MLS 304MA, MLS 304SA, MLS 406,
MLS 406MA, MLS 406SA
MediaLink™ Switchers
68-775-01 Rev. C
06 06
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
Dies es Symbol soll dem Benut zer in der im Liefer umfang ent haltenen 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.
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.
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.
安全须知 中文
这个符号提示用户该设备用户手册中有重要的操作和维护说明。
这个符号警告用户该设备机壳内有暴露的危险电压,有触电危险。
注意
阅读说明书 用户使用该设备前必须阅读并理解所有安全和 使用说明。 保存说明书 用户应保存安全 说明书以备将来使用。 遵守警告 用户应遵守产品和用户指南上的所有安全和操作说明。 避免追加 不要使用该产品厂商没有推荐的工具或追 加设备,以避免危险。
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.
警告
电源 该设备只能使用产品上标明的电源。 设备必须使用有地线的供电系统供电。 第三条线
(地线)是安全 设施,不能 不用或跳过 。
拔掉电源 • 为安全地从设备拔掉电源,请拔掉所有设备后或 桌面电源的电源线,或任何接到市
电系统的电源线。
电源线保护 妥善布线, 避免被 踩踏,或重物 挤压。 维护 所有维修必须由认证的维修人员进行。 设备内部没有用户可以更换的零件。为避免出现
触电危险不要自己试图打开设备盖子维修该设备。
通风孔 • 有些设备机壳上有通风槽或孔,它们是用来防止机内敏感元件过热。 不要用任何东
西挡住通风 孔。
锂电池 • 不正确的更换电池会有爆炸的危险。必须使用与厂家推荐的 相同或相近型号的电池。
按照生产厂的建议处 理废弃电池。
Quick Start — MLS 304MA, MLS 406, MLS 406MA
NOTE Both the toggle switch
position and the wiring must match the
down = 4 ohm or 8 ohm
direct connection
up = 70 V or 100 V
transformer
Installation
Step 1
Remove power from the switcher and the input, output, and control devices.
Step 2
Install the rubber feet on the bottom corners or rack mount the switcher.
Step 3
Connect input devices to the switcher. See chapter 2 for details and wiring diagrams.
MLS 304MA
Inputs 1 and 2: composite video and audio Inputs 3 and 4: RGB computer video or
composite video and audio
MLS 406, MLS 406MA
Inputs 1, 2, 3: S-video or composite video
and audio
Inputs 4, 5, 6:
or composite video and audio
Aux/Mix audio input
Connect a mono audio source to mix a line­level audio signal with the selected input’s audio. This channel is always active.
See chapters 3 and 4 for details on setting up the audio and configuring video.
Step 4
Connect cables from the MLS’s RGB, S-video, and video output connectors to the inputs on the display device.
Connect a cable between the Monitor Output port and the local monitor.
N
There are three modes (selectable only via
RGB computer video, S-video,
RS‑232 control) for determining which input signal, if any, is sent to the Monitor Output port. For an explanation of modes and video routing, see Video Signal Routing on page 3‑7. For selecting the mode, see chapter 4, Serial Communication.
Step 6
Adjust the audio (sensitivity) level for each input. See Making adjustments on page 3-6.
Step 7
Connect audio devices to the Lineout and Preamp audio outputs
Lineout outputs a fixed, line level audio
signal not affected by Volume knob adjustments.
Preamp outputs a variable, line level audio
signal for use with powered speakers or an amplifier. The volume can be attenuated via the Volume knob or RS-232.
Lineout and Preamp outputs can be set up as
-10 dBV (-8 dBu, 0.316 Vrms, default),
unbalanced, for consumer level devices such as VCRs or stereo receiver-amplifiers
or
+4 dBu (+6 dBV, 1.23 Vrms), balanced, for
professional level devices such as mixers
and power amplifiers depending on how the connector is wired and how the MLS is set up via RS-232 control. Selecting mono or stereo (via RS-232) affects both of these ports. See Audio outputs on pages 2-9 through 2-10.
Step 8
Connect a host computer, control system, MediaLink Controller (MLC) and/or an Extron IR Link to the RS-232/MLC/IR control port. See Control Connection on pages 2-7 through 2-8.
Step 7 MLS 304MA, MLS 406MA
Connect speakers to the amplified output (MLS 304MA, MLS 406MA) for mono audio out-
put. See pages 2-11 through 2-13 for diagrams. Set the rear panel toggle switch to the desired
amplifier output type: transformer (Xfmr) (for a 70 V or 100 V system) or Direct (4 or 8 ohms).
Step 5
Connect a host computer to the RS-232/MLC/IR control port (see Control Connection on page 2-6), load and start the control software, set up the video, select a Monitor Output mode, and select a Lineout/Preamp output level.
This output provides a mono signal even if the input is a stereo signal. For stereo output, use the non-amplified Lineout and Preamp outputs instead. See chapter 2, Installation.
Quick Start — MLS 304MA, MLS 406, MLS 406MA, cont’d
R
S
-2
32
/M
L
C
/IR
Tx
RxIR 12V
A
B
C
P
R
E
A
M
P
1
0
0
-
2
4
0
V
1
.
0
A
M
A
X
.
5
0
-6
0
H
z
INPUT 4
AUDIO INPUTS
LIN
E LEVEL MONO
AUD
IO
AUDIO
LINEOUT
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
L
R
1
2
3
IN
PUTS
OUTPUTS
VIDEO
H
V
B
G
R
Y
1
2
3
INPUTS
MON
ITOR O
UT
4
5
6
C
D
IRECT
X
F
M
R
C
O
M
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
System Control
Mono Amplified Output
Projector Control
Extron MLS 406MA
MediaLink Switcher
VCRDVD
Projector
Speakers
PC
Laptop
w/ Audio
or
Document Camera
Extron
MediaLink Controller
MAX
MID
MIN
MAX
MID
MIN
Signal: when lit, this indicates that a signal of at
least -20 dBV (-18 dBu) is detected at the input.
Clip: a blinking/lit LED indicates that the
level is set too high.
Normal: a blinking LED indicates that the level
is set properly for maximum power output.
NOTE Increasing the audio level beyond the point at
which the Mid/normal LED blinks may result in a distorted output signal.
NOTE In setup mode a blinking or lit Mid/normal LED
indicates that the power amplifier is capable of delivering maximum power output.
NOTE You may not need to adjust the per-input gain,
because the default input gain adjustment is set for consumer audio sources such as VCRs, DVD players, and laptop computers.
MLS 304MA, MLS 406MA, MLS 304SA, and MLS 406SA
(amplified models)
Signal: when lit, this indicates that a signal of at
least -20 dBV (-18 dBu) is detected at the input.
Peak: if blinking/lit, the level is set too high.
Normal: if blinking/lit, the output level at the
Lineout and Preamp connectors is near the specified output level of -10 dBV or +4 dBu.
MLS 406 (nonamplified model)
-10 dBV sensitivity
Step 8
Connect all the devices’ power cords, and power on the system.
Video Configuration
Step 1
Via RS-232, configure the MLS: select the video type for 15-pin HD inputs; See chapters 2,
Installation and 4,
Serial Communication.
Step 2
Select a Monitor Output mode via the control software. See Monitor Output Modes on page 3-7 and chapter 4,
Serial Communication.
Audio Configuration
Step 1
For the Lineout and Preamp outputs, select mono or stereo audio, and select -10 dBV (unbalanced) or +4 dBu (balanced) via RS-232 control. Default: -10 dBV.
4a. Enter setup mode: press and hold an in-
put button for 3 seconds. The input’s LED blinks.
Adjust audio levels: while still holding the
4b.
input button, rotate the Volume knob until the Mid/normal LED lights or blinks.
Step 2
Via RS-232, set Aux/Mix to on or off. If the Aux/Mix input will be used, use a small screwdriver to adjust the Aux/Mix input level.
Step 3
Disconnect audio output devices.
Step 4
Select an input and set audio input sensitivities.
N
Audio input sensitivity levels must be
adjusted with an active audio signal.
4c. Release the input button to save the setting
for that input.
Repeat steps 4a through 4c for each input.
4d.
Step 5
Reconnect the output devices, and via RS-232 set the global treble and bass levels and turn on loudness control, if desired.
Table of Contents
Chapter 1 • Introduction ............................................................................................................ 1-1
About this Manual .................................................................................................................... 1-2
About the MLS 304 Series and the MLS 406 Series .............................................. 1-2
Features ........................................................................................................................................... 1-2
All models .................................................................................................................................. 1-2
MA models ................................................................................................................................ 1-2
SA models ...........................................................................................................................1-2
Chapter 2 • Installation ................................................................................................................ 2-1
UL/Safety Requirements ..................................................................................................2-2
Important safety instructions
Mounting the Switcher ....................................................................................................2-2
Tabletop use Rack mounting
.......................................................................................................................2-2
...................................................................................................................2-2
Rear Panels and Cabling .......................................................................................................2-3
Power, input, and control connections ................................................................................. 2-3
Power connection A/V input connections Control connection
Video output, local monitor, and audio output connections .........................................2-7
Video outputs ..................................................................................................................... 2-9
Audio outputs
Wiring for 4 ohm or 8 ohm speakers (MA models) Wiring for a 70 volt or 100 volt distributed speaker system (MA models) Wiring for 4 ohm or 8 ohm speakers (SA models) Speaker arrangement examples
Examples of speaker layouts
............................................................................................................... 2-3
..................................................................................................................... 2-9
.............................................................................................2-2
........................................................................................................ 2-3
.............................................................................................................. 2-6
.................................................. 2-11
............. 2-12
.................................................... 2-13
................................................................................ 2-14
................................................................................ 2-14
PRELIMINARY
Application Diagrams ........................................................................................................... 2-15
Chapter 3 • Operation and Setup ........................................................................................ 3-1
Front Panel Features and Operation ............................................................................. 3-2
Front panel security lockout (executive modes) .................................................................. 3-3
Enabling/disabling executive mode 1; disabling executive mode 2
Resetting the switcher ............................................................................................................. 3-4
Setting Up and Optimizing the Audio .......................................................................... 3-4
Configuring Lineout and Preamp output levels .................................................................. 3-5
Adjusting audio input levels .................................................................................................. 3-5
Making adjustments
........................................................................................................... 3-6
Video Signal Routing .............................................................................................................. 3-7
Monitor Output Modes ........................................................................................................... 3-7
Standard mode (mode 3) DA (distribution amplifier) mode (mode 2)
RGB follow mode (mode 1)................................................................................................. 3-7
.................................................................................................... 3-7
....................................................................... 3-7
MLS 304 Series, MLS 406 Series • Table of Contents
................................ 3-4
i
PRELIMINARY
Table of Contents, cont’d
Remote Control .......................................................................................................................... 3-8
Troubleshooting ......................................................................................................................... 3-9
If the image does not appear or there is no sound ............................................................ 3-9
If the switcher does not respond to controls ....................................................................... 3-9
If you are unable to configure the MLS via the Windows®-based software ................... 3-9
Chapter 4 • Serial Communication ..................................................................................... 4-1
RS-232 Programmer’s Guide ...............................................................................................4-2
Host-to-MLS communications ................................................................................................ 4-2
MLS-initiated messages Error responses
Using the command/response tables ................................................................................. 4-3
Symbol definitions
Command/response table for SIS commands ....................................................................... 4-4
Command/response table for special function SIS commands .......................................... 4-7
...................................................................................................................4-2
Control Software for Windows
Installing the software ............................................................................................................ 4-8
Using the control program ..................................................................................................... 4-8
User Mode screen
Special features
Switcher (MLS) Config screen
File menu options .................................................................................................................. 4-12
Saving and restoring configurations Updating firmware
Using the help program ........................................................................................................ 4-14
Key to file names ................................................................................................................... 4-14
...................................................................................................... 4-2
.............................................................................................................. 4-3
®
...................................................................................... 4-8
................................................................................................................ 4-9
............................................................................................................. 4-9
........................................................................................... 4-10
............................................................................... 4-12
........................................................................................................... 4-12
Appendix A • Reference Material ........................................................................................A-1
Specifications ..............................................................................................................................A-2
Part Numbers and Accessories ..........................................................................................A-6
Included parts ...........................................................................................................................A-6
Optional accessories ................................................................................................................A-6
Frequency Response Graph for the Loudness Feature ......................................A-7
Audio Reference Levels .........................................................................................................A-7
Audio Block Diagrams ..................................................................................................... A-8
MLS 304MA audio block diagram MLS 304SA audio block diagram MLS 406, MLS 406MA audio block diagram MLS 406SA audio block diagram
All trademarks mentioned in this manual are the properties of their respective owners.
.................................................................................... A-8
..................................................................................... A-9
.................................................................. A-10
................................................................................... A-11
68-775-01 Rev. C
06 06
ii
MLS 304 Series, MLS 406 Series • Table of Contents
MLS 304 Series and MLS 406 Series
Chapter One
1
Introduction
About this Manual
About the MLS 304 Series and MLS 406 Series
Features
Introduction
About this Manual
This manual covers the installation, setup, programming, and use of the Extron MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, and MLS 406SA MediaLink™ switchers. The three models share many features, and instructions apply to all three unless otherwise stated. Throughout the manual these switchers are interchangeably referred to as MLS, MediaLink switcher, and switcher. Procedures or explanations that are model-specific mention the model name (e.g. MLS 406MA).
About the MLS 304 Series and the MLS 406 Series
The Extron MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, and MLS 406SA are four- and six-input, active switchers. They accept RGB computer video (all models), S-video (MLS 406 Series), composite video inputs (all models), stereo audio inputs, and a line level mono audio auxilliary/mixer input.
Each switcher has a local monitor loop-through/output in addition to the RGB and video projector/plasma display output and balanced or unbalanced lineout and preamp audio outputs. If desired, the monitor output can be used as a second RGB display output instead of for a local monitor. Additionally, the MA models offer amplified mono audio output for 4 ohm, 8 ohm, or distributed 70 V or 100 V speaker systems. The SA models offer amplified stereo audio output for 4 ohm or 8 ohm speaker systems.
These switchers can all be set up and controlled via the front panel buttons or via an RS-232 connection from a computer, a control system, or an Extron MediaLink Controller. Some setup options are available only via the included Windows-based MediaLink Control Program. With the addition of an optional Extron IR Link infrared signal repeater, an Extron MediaLink IR remote control can be used for input selection and volume adjustment.
Features
All models
MA models
SA models
• High RGB video bandwidth (280 MHz at -3 dB)
• Triple-Action Switching™ (RGB delay switching)
• Video format versatility: the switchers accept RGB computer video, S-video (MLS 406, MLS 406MA, MLS 406SA), and composite video
• Monitor Output for local monitor loop-through or for an additional RGB output
• Aux/Mix audio input for mixing mono line level audio with the switchable audio input
• Adjustable audio bass, treble, and volume
• Individually adjustable audio input levels
• Balanced or unbalanced preamp audio output
• Loudness control
• Ability to lock the front panel to prevent unauthorized access (executive mode)
• Control and configuration via RS-232
• Ventilated 1U, rack mountable, metal enclosure
• Integrated 20 watt mono audio amplifier for 4 ohm or 8 ohm, or 16 watts for 70 V or 100 V distributed output
• Integrated 24 watt audio amplifier for stereo or dual mono 4 ohm output or 16 watts for stereo or dual mono 8 ohm output
1-2
MLS 304 Series, MLS 406Series • Introduction
MLS 304 Series and MLS 406 Series
Chapter Two
2
Installation
UL/Safety Requirements
Mounting the Switcher
Rear Panels and Cabling
Application Diagrams
PRELIMINARY
Installation
UL/Safety Requirements
The Underwriters Laboratories (UL) requirements listed below pertain to the safe installation and operation of a MediaLink Switcher.
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
8
9
10
11
12. Use only with the cart, stand, tripod, bracket, or table specified by the
13
14. Refer all servicing to qualified service personnel. Servicing is required when
manufacturer’s instructions.
. Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
. Do not defeat the safety purpose of the polarized or grounding type plug. A
polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
. Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the apparatus.
. Only use attachments/accessories specified by the manufacturer.
manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
. Unplug this apparatus during lightning storms or when unused for long
periods of time.
the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
2-2
MLS 304 Series, MLS 406 Series • Installation
Rack Mount MLS 304MA.eps
MLS 304MA
MediaLink Switcher
CON
TROL
PEAK
C
LIP
SIGNAL
IN
PUT SELEC
T
1
2
3
4
Mounting the Switcher
Tabletop use
Each MLS switcher comes with rack mounting brackets and rubber feet. For table­top 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. Attach the provided rack mounting brackets to the switcher with machine screws, then fasten the switcher to the rack using the supplied machine screws.
Although it is not required, for the models with audio amplification (MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA) Extron recommends allowing one rack unit of space (1.75"/4.5 cm) above and below the switcher for air circulation to prevent overheating.
C
The MA and SA models contain a class AB amplifier, which gets hot.
There is no cooling fan in the MLS switcher.
PRELIMINARY
Rack mounting the MediaLink Switcher
MLS 304 Series, MLS 406 Series • Installation
2-3
Installation
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
1
2
INPUTSOUTPUTS
VIDEO
H
V
B
G
R
1
2
INPUTS
3
4
MONITOR OUT
100-240V
1.0A MAX.
50-60Hz
RL
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
AUX/MIX
ADJUST
-42dB
TO
+24dB
L
R
L
R
L
R
1
2
3
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
Y
1
2
3
INPUTS
MONITOR OUT
4
5
6
C
100-240V
1.0A MAX.
50-60Hz
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
4
RL RL
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
RL RL
2 4 5
3a
3b
61
MLS 304MA and MLS 304 SA Rear Panel
MLS 406, MLS 406MA, and MLS 406SA Rear Panel
Sleeve (Gnd )
Tip (+)
Sleeve ( )
Audio RCA connector color_2.eps
Right Channel (Red Jacket)
Left Channel (White Jacket)
Tip (Signal)
Rear Panels and Cabling
Power, input, and control connections
N The MA and SA models differ only by amplifier output type and connection.
Power connection
a
All other A/V, power, and control connections are the same.
AC power connector — Plug a standard IEC power cord into this connector to
connect the switcher to a 100 to 240 VAC, 50 Hz or The front panel power LED (
) lights while the MLS is receiving power.
60 Hz power source.
A/V input connections
b
PRELIMINARY
Ñ
N
2-4
MLS 304 Series, MLS 406 Series • Installation
B Video inputs
MLS 304MA MLS 304SA: connect a composite video source device to each of
these female RCA (tip-ring) connectors for video inputs 1 and 2.
MLS 406, MLS 406MA, MLS 406SA: connect either an S-video source (using
the 4-pin mini DIN connector) or a composite video source (using the BNC connector) for input 1, 2, or 3.
RCA audio inputs — These audio inputs correspond to the like-numbered
video inputs. These inputs accept line level audio signals from consumer and professional audio sources. Consumer devices such as PCs, VCRs, and DVD players typically output an unbalanced -20 dBV to -10 dBVsignal. Professional products such as mixers and signal processing gear typically output a balanced 0 dBu to +4 dBu (+6 dBV) level signal. To adjust input levels, see pages 3-5 and 4-10 through 4-11.
Connect an unbalanced stereo audio source to each pair of RCA jacks. Use the red sheathed cable/connector for the right channel, and use the white sheathed cable/connector for the left channel as shown below.
Wiring RCA connectors for unbalanced stereo audio input
After the audio inputs and outputs are connected, see chapter 3 for
instructions on how to adjust the per-input audio input levels and optimize audio input and output.
L R
L R
L R
L R
Unbalanced Stereo Input
Tip
Sleeve
Tip
Sleeve
Balanced Stereo Input
Tip
Ring
Sleeve (s)
Tip
Ring
(high impedance)
(high impedance)
Unbalanced Mono Input
Tip
Sleeve
Tip
Sleeve
Balanced Mono Input
Tip
Ring
Sleeve (s)
Tip
Ring
(high impedance)
(high impedance)
0.2” (5 mm) max.
The length of exposed wires is critical. The ideal length is 0.2" (5 mm).
• If the stripped section of wire is longer than 0.2", the exposed wires may touch, causing a short circuit between them.
• If the stripped section of wire is shorter than 0.2", wires can be easily pulled out even if tightly fastened by the captive screws.
Do not tin the wires!
Input Type
Signal (BNC Color)
15-pin HD Pin
S-video Y (green), C (blue) 2, 3
Composite video video (red) 1
V = vertical sync
R = red or video
G = green or S-video (Y)
B = blue or S-video (C)
H/HV = horiz. sync
MLS 406, MLS 406MA, MLS 406SA audio input 4 (captive screw) — This
Ö
input accepts line level audio signals from consumer and professional audio sources. Consumer devices such as laptops, VCRs, and DVD players typically output an unbalanced -20 dBV to -10 dBV signal. Professional products such as mixers and signal processing gear typically output a balanced +4 dBu level signal. To adjust input levels, see pages 3-5 and 4-10 through 4-11.
Wire the 3.5 mm captive screw connector as shown in the following illustrations, depending on input signal type.
N After the audio inputs and outputs are connected, see chapter 3 for
instructions on how to adjust the per-input audio sensitivity levels and optimize audio input and output.
Computer video (and audio) inputs — MLS 304MA and MLS 304SA inputs 3 and 4; and MLS 406, MLS 406MA, and MLS 406SA inputs 4, 5, and 6, all on 15-pin HD connectors; are individually buffered and provide ID bit termination. They accept
RGB computer video signals (default) or
S-video (MLS 406 Series only) or composite video (all models)
For S-video or composite video, the switcher must be configured via RS-232 serial control (SIS commands or control software); see pages 4-4 and 4-10 through 4-11.
For RGB input, connect a standard VGA-style cable from the source computer to the desired MLS input. For S-video or composite video input, you may need to use an adapter cable such as an Extron SY 15HDM-RGBHV cable (shown below). Connect the video or S-video source to the MLS as follows:
N Selecting S-video or composite video for these inputs limits the Monitor
Output mode options to Standard Mode.
MLS 304 Series, MLS 406 Series • Installation
PRELIMINARY
2-5
Installation, cont’d
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm Stereo Plug (unbalanced)
-10 dBV sensitivity
LINE LEVEL
MONO
AUX/MIX
ADJUST
-42dB TO
+24dB
+ Positive
– Negative
Ground
For these inputs (excluding input 4 on the MLS 406/MLS 406MA/MLS 406SA), connect the corresponding unbalanced stereo audio signal to the 3.5 mm mini stereo (tip-ring-sleeve) jack. Wire the stereo connectors as shown at right.
N
e
N
C
After the audio inputs and outputs are
Aux/Mix audio input and adjustment — To mix an auxiliary, mono,
line-level audio signal (from a wireless microphone receiver, for example) with the selected input’s audio, connect the cable from the mono source to this 3-pole captive screw connector. The signal can be balanced or unbalanced. See the diagram at right.
The Aux/Mix level can be changed ONLY via this rear
The Aux/Mix input accepts line level audio signals from consumer and professional audio sources. Consumer devices such as PCs, VCRs, DVD players, and some wireless microphones typically output an unbalanced -20 dBV to -10 dBV signal. Professional products such as mixers and signal processing gear typically output a balanced 0 dBu to +4 dBu level signal.
connected, adjust the per-input audio sensitivity levels and optimize audio input and output. See pages 3-5 and 3-6 for instructions.
panel control. It can not be controlled or adjusted by RS-232 control, or by a MediaLink Controller.
The maximum auxiliary input signal level is +4 dBu. Do not exceed this
input level.
PRELIMINARY
This input’s audio channel is always active, and it is independent of the selectable audio inputs (1-4 or 1-6). The Aux/Mix audio can be heard throughout a presentation, whether or not another input is selected.
N
N If you mute audio input by selecting input zero (SIS commands 0! or 0$), only
N Aux/Mix input can be turned off (muted) via a separate RS-232 command
N The Aux/Mix level can be changed ONLY via this rear panel control. It can
N The optional MediaLink Audio Control Module (ACM-Level, part
If audio output is muted via the 1Z SIS command, all audio outputs are
muted. You are not able to hear audio from any source.
audio from the numbered inputs (1-4 or 1-6) is muted. The Aux/Mix audio input stays active and is not affected by selection of audio input 0.
(0M). See chapter 4, Serial Communication for details.
To adjust the Aux/Mix input level, use a small screwdriver to turn the control adjacent to the Aux/Mix connector. The adjustment range is -42 dB to +24 dB. Setting the potentiometer to the marked location sets the input level sensitivity for an approximately -10 dBV consumer signal.
not be controlled or adjusted by RS-232 control, or by a MediaLink Controller.
#70-182-01, -02, -03) is not compatible with these switchers. The mix level control is not supported.
2-6
MLS 304 Series, MLS 406 Series • Installation
RS-232/MLC/IR
Tx
Rx IR
12V
A
B
C
Transmit (Tx) Receive (Rx)
Sleeve(s)
+12 V, 0.4 A power output
Ground ( )
RS-232 MLC/IR
MediaLink Switcher to an MLC
MediaLink
Switcher rear panel RS-232/MLC/IR port
NOTE
The switcher provides up to 12 VDC, 0.40 A power to an MLC 206. Other MLC models may draw more current than the MLS can provide. Extron recommends using a separate power supply for the MLC.
NOTE If you use cable that has a
drain wire, tie the drain wire to ground at both ends.
RS-232_MLC-IR port wiring_MLS304_062404.eps
RS-232 MLC/IR
Tx RxIR+12V
Tx RxIR
+
12 V
MediaLink Switcher to an IR Link
MediaLink Switcher rear panel RS-232/MLC/IR port
IR Link port
A B C
A B C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR +12V
AB C
Ground ( )
+12 VDC
Transmit (Tx)
B
Receive (Rx)
A
250 feet (76.2 m) maximum
150 feet (45.7 m) maximum
Ground ( )
+12 VDC
IR (IR Link)
C
IR Link
MLA-Remote
SIGNAL
IR
A B C D E
D
DVD
MLC MLS/Power port
A B
MLS / Power
Transmit (Tx) Receive (Rx)
+12 VDC
Ground ( )
B A
MediaLink Controller
(MLC)
Control connection
RS-232/MLC/IR control port —You can control the MLS switcher via an
f
RS-232 connection directly from a host computer, a control system, or a MediaLink Controller (MLC). Alternatively, you can use IR remote control via an Extron IR Link connected to this port.
Connect a cable between this port and an optional
Extron MLC 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 (MLC) can be up to 250 feet (76.2 m) apart. Wire the captive screw connector for connection to an IR Link, an MLC, or a computer or control system as shown in the following four diagrams.
MLS 304 Series, MLS 406 Series • Installation
PRELIMINARY
2-7
RS-232 MLC/IR
MediaLink Switcher to an MLC
MediaLink
Switcher rear panel RS-232/MLC/IR port
NOTE
The switcher provides up to 12 VDC, 0.40 A power to an MLC 206. Other MLC models may draw more current than the MLS can provide. Extron recommends using a separate power supply for the MLC.
Ground ( )
+12 VDC input
NOTE If you use cable that has a
drain wire, tie the drain wire to ground at both ends.
RS-232 MLC/IR
MediaLink Switcher to an MLC that has an external power supply
MediaLink Switcher rear panel RS-232/MLC/IR port
NOTE
If using an external power supply (instead of the MLS) to power the MLC, 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.
RS-232_MLC-IR port wiring_MLS304_062404.eps
RS-232 MLC/IR
Tx RxIR +12V
Tx RxIR
+12 V
Tx RxIR
+12V
MediaLink Switcher to an IR Link
MediaLink Switcher rear panel RS-232/MLC/IR port
IR Link port
A B C
A B C
A B C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
RS-232 MLC/IR
RS-232 port
of a
computer or
control system
MediaLink Switcher to a computer or control system
MediaLink Switcher rear panel RS-232/MLC/IR port
NOTE
Connect a ground wire between the MLC and the computer or control system.
NOTE If you use cable that has a
drain wire, tie the drain wire to ground at both ends.
Tx RxIR +12V
A B C
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
Host Computer Control System
or
Ground ( )
+12 VDC
Transmit (Tx)
B
Receive (Rx)
A
Ground ( )
Transmit (Tx)
B
Receive (Rx)
A
Ground ( )
Transmit (Tx)
B
Receive (Rx)
A
250 feet (76.2 m) maximum
150 feet (45.7 m) maximum
Ground ( )
+12 VDC
IR (IR Link)
C
IR Link
MLA-Remote
SIGNAL
IR
A B C D E
D
DVD
MLC MLS/Power port
MLC MLS/Power port
A B
MLS / Power
Transmit (Tx) Receive (Rx)
+12 VDC
Ground ( )
B A
A B
MLS / Power
Transmit (Tx) Receive (Rx)
B A
Transmit (Tx) Receive (Rx)
3 2
Ground all devices
External
Power Supply
(12 VDC, 1A max.)
External
Power Supply
MediaLink Controller
(MLC)
MediaLink Controller
(MLC)
1
5
9
6
7 6 5 4 3 2 1
8
9
Purple
Blue
Green
Yellow
Orange
Red
Brown
Grey
Black
Connector Shell
Pin #Color
UC Cable
Shield
UC 50', 100', 200' Cable Color Codes
To the
computer
or control system
To the
MLS
switcher
Installation, cont’d
PRELIMINARY
You may use a male 9-pin D-to-bare-wire RS-232 cable or a universal control cable (UC 50', UC 100', or UC 200') for the connection to a computer or control system. One end of the UC cable is terminated with a female 9-pin D connector, and the other end is unterminated. The UC cable’s pin assignments are as shown in the following illustration. Refer to the computer/control system’s pin assignment guide to determine which of the cable’s wires to connect to which of the MLS’s RS-232/MLC/IR port pins.
2-8
MLS 304 Series, MLS 406 Series • Installation
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
1
2
INPUTSOUTPUTS
VIDEO
H
V
B
G
R
3
4
MONITOR OUT
OUTPUTS
VIDEO
H
V
B
G
R
Y
MONITOR OUT
C
RL
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
L
R
1
2
3
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
Y
MONITOR OUT
4
5
6
C
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUDIO
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
1
2
OUTPUTS
VIDEO
H
V
B
G
R
3
4
MONITOR OUT
AUDIO INPUTS
AUDIO
AUDIO
L
R
L
R
L
R
1
2
3
INPUTS
4
5
6
LINE LEVEL
MONO
AUX/MIX
ADJUST
-42dB TO
+24dB
INPUTS
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
4
RL RL
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
RL RL
AMPLIFIED OUTPUT
4/8 ohm
RIG HT LEF T
STEREO OR DUAL MONO
CLASS 2 WIRI NG
RL
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
4
RL RL
RS-232/MLC/IR
Tx
Rx IR 12V
A B C
PREAMPLINEOUT
RL RL
3a
3b
61
7 8 9 10 11
12
MLS 304MA Rear Panel
MLS 406MA Rear Panel
MLS 406SA Rear Panel (amplifier output)
VIDEO
Y
C
H
V
B
G
R
H
V
B
G
R
H
V
B
G
R
RGBHV RGBS RGsB, RsGsBs
S-video
(MLS 406 Series)
Composite
video
Video output, local monitor, and audio output connections
Video outputs
Display outputs — Connect cables from the
g
appropriate port(s) on the projector or display panel to these BNC connectors according to the output signal type, as shown below.
The output signal is in the same format (RGBHV, RGBS, RGsB, RsGsBs, S-video, or composite video) 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.
Monitor Output — This 15-pin HD connector serves as either a local
h
monitor loop-through port or an additional RGB output. Connect a cable between this port and the local or additional display device.
There are three different options (modes) for determining which input
signal, if any, is sent to the monitor output. These modes are selectable only via RS-232 control. For an explanation of modes and video routing, see pages 3-7 and 3-8. See chapter 4, Serial Communication for details on selecting the mode.
Audio outputs
Lineout audio output and Preamp audio output — These outputs are simultaneously active and can be wired and configured for balanced or unbalanced mono or stereo audio signal output. The switcher must also be configured for the corresponding signal type (mono or stereo).
Selecting either mono or stereo (via RS-232 by way of the control software or SIS commands) selects the output signal format for both the Lineout and Preamp outputs. The switcher configuration (mono or stereo) and the output wiring must match.
The Lineout connector outputs a fixed, line level audio signal that is
not affected by front panel Volume knob adjustments. A recording or assistive listening device would typically be connected here.
MLS 304 Series, MLS 406 Series • Installation
PRELIMINARY
2-9
Installation, cont’d
Unbalanced Stereo Output
Tip
NO GROUND HERE.
Sleeve(s)
Tip
NO GROUND HERE.
Balanced Stereo Output
Tip
Ring
Sleeve(s)
Tip
Ring
L R
L R
L R
L R
Unbalanced Mono Output Balanced Mono Output
Tip
NO GROUND HERE.
Sleeve
Tip
Ring
Sleeve
Left
Right
Left
Right
Left
Right
Left
Right
CAUTION
For unbalanced audio, connect the sleeve(s) to the center contact ground. DO NOT connect the sleeve(s) to the negative (-) contacts.
The Preamp connector outputs a variable, line level audio signal for
Lineout and Preamp outputs can be set up as
unbalanced, -10 dBV (-7.8 dBu, 0.316 Vrms, default) for consumer level
or
balanced, +4 dBu (+1.8 dBV, 1.228 Vrms) for professional devices such
depending on how the connector is wired and how the MLS is set up (via the control software). See the following wiring diagrams and chapter 4, Communication.
use with a powered amplifier or self-powered speakers. The volume can be controlled (attenuated) via the front panel knob or RS-232 communication. The volume range is 0 (mute) through 100.
devices such as VCRs, DVD players, and stereo receivers
as mixers, signal processors, and power amps
Serial
C Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal will damage the audio output circuits.
N For mono output, wire either the left or the right side, not both.
PRELIMINARY
2-10
MLS 304 Series, MLS 406 Series • Installation
C Do not bridge mono outputs. The left and right input signals are
summed, and each mono output channel carries the same combination signal.
N
If the output is wired for balanced output, the level is +6 dB higher than the
level for unbalanced output wiring. The balanced/unbalanced level difference occurs no matter which line level output setting is chosen via RS-232. See page 4-10.
N After the audio inputs and outputs are connected, see chapter 3, Operation
and Setup for instructions on how to adjust the per-input audio sensitivity
levels and optimize Lineout and Preamp output.
N If the Loudness feature is turned on, the gains for bass and treble frequencies
are affected for all outputs whenever volume is adjusted.
Amplified output (MLS 304MA, MLS 406MA only) — Cable speakers to this 5-position screw terminal for a mono amplified audio output. This provides a mono output signal even if the input is a stereo signal. For stereo output, use the non-amplified Lineout and Preamp outputs instead.
The 4 ohm/8 ohm direct connection circuit and the 70 V/100 V transformer connection are mutually exclusive: only one circuit (direct or transformer) can be active at a time.
C
Do not short the terminals to ground or the amplifier will be damaged.
C Do not bridge mono outputs. Bridging could damage the amplifier.
Two 8 ohm speakers wired in parallel equal a 4 ohm load.
4 Ohm Load or
8 Ohm Load
4 Ohm Total Load 4 Ohm Total Load
8 Ohm Total Load
Two 4 ohm speakers wired in series equal an 8 ohm load.
8 Ohm Total Load
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
4/8 ohm
4/8 ohm
Mono –
Mono +
Mono –
8 ohms
8 ohms
4 ohms
4 ohms
Mono +
Mono –
4 ohms
Mono +
Mono –
Mono +
4 ohms
4 ohms
4 ohms
Mono –
8 ohms
Mono +
8 ohms
8 ohms
8 ohms
The MA models’ amplifier power-up delays are approximately
• 10 seconds for 70 V or 100 V output, 8 seconds to hear the relay click
• 8 seconds for 4 ohm or 8 ohm output
Wiring for 4 ohm or 8 ohm speakers (MA models)
The maximum power output when an MLS 304MA or MLS 406MA is wired
for 4 ohm or 8 ohm speakers is 20 watts per channel.
1. Flip the toggle switch down (Direct) to select 4 ohm or 8 ohm connection.
2. Use the appropriate wiring for the load as shown in the following
illustrations.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Installation
2-11
Installation, cont’d
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
AMPLIFIED OUTPUT
20 WATTS MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
Common
70V
3.7 WCom.
3.7 WCom.
3.7 WCom.
3.7 WCom.
3.7 WCom.
3.7 WCom.
3.7 WCom.
3.7 WCom.
7.5 WCom.
7.5 WCom.
70V Speakers
Common
100V
100V Speakers
4 Speakers Tapped at 3.7 Watts Each Equals 14.8 Watts Total
Common
70V
70V Speakers
2 Speakers Tapped at 7.5 Watts Each Equals 15 Watts Total
4 Speakers Tapped at 3.7 Watts Each Equals 14.8 Watts Total
Wiring for a 70 volt or 100 volt distributed speaker system (MA models)
C
N
The maximum power output when the MLS is wired for 70 volt or 100 volt
1. Flip the toggle switch up to select a distributed 70 V or 100 V system
. Use the appropriate wiring for the load as shown in the following
2
The speaker taps should not exceed the amplifier’s maximum power
output.
systems is 16 watts.
connection.
illustrations.
PRELIMINARY
C Do not short the terminals to ground or the amplifier will be damaged. C Do not bridge mono outputs. Bridging could damage the amplifier.
2-12
MLS 304 Series, MLS 406 Series • Installation
Dual Mono OutputStereo Output
Stereo or Dual Mono Output
Stereo or Dual Mono Output
4 Ohm Load or 8 Ohm Load
4 Ohm Load or 8 Ohm Load
4 Ohm Total Load4 Ohm Total Load
8 Ohm Total Load8 Ohm Total Load
Two 8 ohm speakers wired in parallel equal a 4 ohm load.
Two 4 ohm speakers wired in series equal an 8 ohm load.
AMPLIFIED OUTPUT
4/ 8 ohm
RI GHT LE FT
STEREO OR DUAL MONO
CLASS 2 WIRIN G
AMPLIFIED OUTPUT
4/ 8 ohm
RI GHT LE FT
STEREO OR DUAL MONO
CLASS 2 WIRIN G
AMPLIFIED OUTPUT
4/ 8 ohm
RI GHT LE FT
STEREO OR DUAL MONO
CLASS 2 WIRIN G
AMPLIFIED OUTPUT
4/ 8 ohm
RI GHT LE FT
STEREO OR DUAL MONO
CLASS 2 WIRIN G
Mono –
or
Stereo L-
8 ohms
8 ohms
4 ohms
4 ohms
Mono +
or
Stereo L+
Mono –
or
Stereo R-
Mono +
or
Stereo R+
Stereo L–
Stereo L+
Stereo R–
Stereo R+
Mono –
Mono +
Mono –
Mono +
8 ohms
8 ohms
Mono –
or
Stereo L-
Mono +
or
Stereo L+
4 ohms
4 ohms
Mono –
or
Stereo R-
Mono +
or
Stereo R+
Amplified output (MLS 304SA, MLS 406SA only) — Cable speakers to this
l
5-position screw terminal for either stereo or dual mono amplified audio output. The switcher’s default setting is stereo output. Dual mono (the same signal output on both channels) can be selected via software.
C
C Do not bridge mono outputs. Bridging could damage the amplifier.
Wiring for 4 ohm or 8 ohm speakers (SA models)
N
Do not short the terminals to ground or the amplifier will be damaged.
Do not connect anything to the middle position of the 5-position screw terminal; it is not connected to ground.
The SA models’ amplifier power-up delay is 8 seconds for either 4 ohm or 8 ohm output
The maximum power output when an MLS 304SA or MLS 406SA is wired for
4 ohm speakers is 24 watts (12 watts per channel). Maximum power output for 8 ohm speakers is 16 watts (8 watts per channel).
PRELIMINARY
MLS 304 Series, MLS 406 Series • Installation
2-13
Installation, cont’d
2 Front Program Speakers
Program Speakers
Classroom Top View
4 Ceiling Speakers
Classroom Top View
Ceiling Speakers
C Do not short the terminals to ground or the amplifier will be damaged.
C Do not bridge mono outputs. Bridging could damage the amplifier.
Speaker arrangement examples
Ceiling and program speakers can be arranged several different ways.
The following factors affect the choice of speaker placement:
• Dimensions of the room
• Room acoustics
• Desired evenness of sound coverage
• Audience mobility (whether the audience will be seated or not)
• Ambient noise level
• Type of music or other audio source
Some general ideas for speaker placement are included below.
Examples of speaker layouts
Do not connect anything to the middle position of the 5-position screw terminal; it is not connected to ground.
PRELIMINARY
2-14
MLS 304 Series, MLS 406 Series • Installation
Extron MLS 304MA
MediaLink Switcher
R
100-240
V
1.0A M
A
X
.
50-60
H
z
AUD
IO INPUTS
LINE LEVEL
MONO
AUD
IO
AUD
IO
AUX
/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
R
1
2
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
1
2
INPUTS
MONITOR OUT
5
6
LINEOUT
RS-232/MLC/IR
Tx
Rx
IR 12V
A
B
C
PREAMP
AM
PLIFIED
OU
T
PU
T
20 WATTS
MONO
DIRECT
XFMR
COM
4/8 ohm
100V
70V
L
R
L
R
Projector
VCR
Speakers
PC
Laptop
w/ Audio
or
CO
NF
IG
PROJECTOR
VOLUME
ON
OFF
1
2
3
4
ON
OFF
Extron MLC 104
MediaLink Controller
System Control
Mono Amplified Output
Projector Control
RS-232 Control
Mono Amplified Output
Projector Control
R
100-240V
1.0A MAX.
50-60Hz
RS
-232
M
L
C/IR
CONTROL
INPUT 4
AUDIO INPUTS
LINE LEVEL
MONO
AUDIO
AUD
IO
Tx
Rx
IR
12V
A
B
C
PREAMP
AUX
/MIX
ADJUST
-42dB TO +24dB
L
R
L
R
L
R
1
2
3
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
Y
1
2
3
INPUTS
MONITOR OUT
4
5
6
C
AMPLIFIED OUTPUT 20 W
A
TTS
M
O
NO
DIREC
T
X
FM
R
C
O
M
CO
M
100V
70V
4
8
Extron MLS 406MA
Switcher
Laptop
w/ Audio
or
RGB
Document
Camera
VCR
DVD
Projector
PC
Speakers
Extron
PR
O
JE
C
T
O
R
1
2
3
4
5
6
V
O
L
U
M
E
C
O
N
FIG
IR
PC
A
U
X
V
ID
E
O
D
VD
V
C
R
LAPTOP
A
U
T
O
IM
A
G
E
M
U
TE
ON
OFF
Extron MLC 226
MediaLink Controller
Application Diagrams
PRELIMINARY
MLS 304 Series, MLS 406 Series • Installation
2-15
Installation, cont’d
RS-232/M
LC/IR
Tx
Rx
IR
12V
A
B
C
PREAMP
100-240V
1.0A M
AX
.
50-60H
z
AUD
IO INPUTS
LINE LEVEL
MONO
AUDIO
AUD
IO
LINEOUT
AUX/MIX
ADJUST
-42dB TO
+24dB
L
R
L
R
R
1
2
INPUTS
OUTPUTS
VIDEO
H
V
B
G
R
1
2
INPUTS
MONITOR OUT
5
6
R
IG
H
T
L
E
F
T
AMPLIFIED OUT
PUT
Projector Control
Extron MLS 304SA
MediaLink Switcher
Laptop
w/ Audio
or
VCR
PC
Extron
DISPLAY POWER
VOLUME
M
A
X
/
M
IN
VCR
DVD
Laptop
System Control
4/8 ohm Stereo
or Dual Mono Output
Extron MLC 206
MediaLink Controller
Projector
R
S
-2
3
2
/M
L
C
/IR
Tx
Rx
IR
12V
A
B
C
P
R
E
A
M
P
1
0
0
-
2
4
0
V
1
.0
A
M
A
X
.
5
0
-6
0
H
z
INPUT 4
AUD
IO INPUTS
LINE LEVEL
MONO
AUD
IO
AUD
IO
LINEO
UT
AUX
/M
IX
AD
JUST
-42dB TO
+24dB
L
R
L
R
L
R
1
2
3
INPU
TS
OUTPUTS
VIDEO
H
V
B
G
R
Y
1
2
3
INPUTS
MONITOR OUT
4
5
6
C
RIGHT
LEFT
AM
PLIFIED O
UTPUT
System Control
Projector Control
4/8 ohm Stereo or Dual Mono Output
Extron MLS 406SA
MediaLink Switcher
Laptop
w/ Audio
or
Document CameraVCRDVD
Projector
PC
Extron
MLC 206
MediaLink Controller
Extron
DISPLAY
POWER
VOLUM
E
MAX/
MIN
VCR
DVD
Laptop
PRELIMINARY
2-16
MLS 304 Series, MLS 406 Series • Installation
MLS 304 Series and MLS 406 Series
Chapter Three
3
Operation and Setup
Front Panel Features and Operation
Setting Up and Optimizing the Audio
Video Signal Routing
Remote Control
Troubleshooting
Operation and Setup
VOLUME
MAX
MID
MIN
INPUT SELECT
1
2
3
4
5
6
VOLUME
MAX
MID
MIN
INPUT SELECT
1
2
3
4
21
MLS 304 Series Front Panel
MLS 406 Series Front Panel
3
VOLUME
MAX
MID
MIN
User (regular) mode
Maximum volume limit (100%)
51% of the maximum volume
Minimum threshold (at least 21%)
Front Panel Features and Operation
N The MLS 304MA and MLS 304SA have identical front panel features.
The MLS 406, MLS 406MA, and the MLS 406SA have identical front panel features.
Power indicator LED — When lit this LED indicates that the switcher is
a
powered on.
PRELIMINARY
Input selection buttons and indicator LEDs — Press one of these buttons to
b
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, and described in Special Features on page 4-9), audio is switched separately from video. The selected video input’s LED lights steadily, and the audio input’s LED blinks.
Which input’s signal, if any, is routed to the Monitor Output depends on which mode (standard, DA, or RGB follow) is active. See Video Signal Routing on page 3-7 for details on modes and video routing.
Volume adjustment knob and Min/Mid/Max LEDs — Use this knob to make
c
input level and volume adjustments. The LEDs indicate different things, depending on the mode (user or setup) the MLS is in. See Making adjustments, on page 3-6 for instructions on setup mode and per-input adjustments. See appendix A, Reference Material, for audio block diagrams.
In the user (regular) mode, the LEDs function as volume level
indicators. Rotate the Volume knob to adjust the output level of the Preamp and Amplified outputs.
3-2
N The volume of the Lineout output is not affected by this volume adjustment.
N If the Loudness feature is turned on, the gains for bass and treble frequencies
are affected for all outputs whenever volume is adjusted.
MLS 304 Series, MLS 406 Series • Operation and Setup
MAX
MID
MIN
Signal
: when lit this LED indicates that a signal of
at least -20 dBV (-18 dBu) is detected at the input.
Peak:
if blinking/lit, the level is set too high.
Normal:
if blinking/lit, the output level at the Lineout and Preamp connectors is near the specified output level of -10 dBV or +4 dBu.
MAX
MID
MIN
Signal
: when lit this LED indicates that a signal of
at least -20 dBV (-18 dBu) is detected at the input.
Clip:
if blinking/lit, the level is set too high.
Normal:
a blinking LED indicates that the level is set properly for max. power output.
NOTE If the Max/Clip LED lights, the audio may be clipped.
MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA
MLS 406
In setup mode these LEDs function as input level indicators. Rotate the
Volume knob and observe the LEDs to set up the proper audio input levels.
N During setup audio/video breakaway is disabled. N Per-input audio level (sensitivity) settings can be adjusted via this front panel
Front panel security lockout (executive modes)
To prevent accidental changes to settings, the MLS switchers feature two types of front panel security lockout (executive) modes for limiting users’ access to front panel controls. When either executive mode is active, functions and adjustments can still be made through RS-232 control or via hardwired IR control. For details on RS-232 control, see chapter four.
Executive mode 1 prevents user access to all front panel selections and setup;
only volume adjustments are possible. Executive mode 1 can be enabled and disabled via the front panel buttons or via RS-232 control.
Executive mode 2 prevents user access to all selections and adjustments from
the front panel. This mode can be enabled via RS-232 control only. When executive mode 2 is enabled, input selections and volume adjustments can be performed only via RS-232 control, IR remote control, or an optional Extron MediaLink Controller (MLC). Executive mode 2 can be disabled via the front panel buttons or via RS-232 control. See chapter four for details on RS-232 control and executive mode 2.
The executive mode setting (enabled/disabled) is retained even when the switcher is powered off.
N Resetting the switcher to factory defaults also disables executive mode.
knob or via RS-232 control.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Operation and Setup
3-3
Operation and Setup, cont’d
INPUT SELECT
1
2
3
4
5
6
INPUT SELECT
1
2
3
4
5
6
Press and hold buttons 1 and 4
simultaneously for 3 seconds.
All input selection buttons light for 1 second to indicate
that executive mode 1 has been enabled or disabled,
or that executive mode 2 has been disabled.
Release the buttons.
Enabling/disabling executive mode 1; disabling executive mode 2
Press and hold input selection buttons 1 and 4 simultaneously for 3 seconds as shown below. When all of the input selection LEDs light, the switcher has enabled or disabled executive mode, and you can release the buttons.
Resetting the switcher
The switcher can be reset to the factory defaults via the front panel or via RS-232 control.
To reset the switcher via the front panel, follow these steps.
1. Unplug the switcher from the AC power source.
2. Press and hold input selection buttons 1 and 4 while reapplying power to the
switcher (reconnecting it to the AC power source). All the input selection LEDs blink for one second while the switcher is being reset.
PRELIMINARY
These settings are reset (defaults are in parenthesis):
• Audio level (sensitivity = -10 dBV)
• Audio gain/attenuation (+6 dB for SA, MA, and non-amp models)
• Bass (0)
• Treble (0)
• Loudness (off)
• Line level audio output (stereo)
• Video type (configurable inputs = RGB)
• RGB delay (0 sec.)
• Monitor Output mode (RGB follow)
• Executive mode (off)
• Aux/Mix (on)
• Volume (41)
• switcher mode (single)
Setting Up and Optimizing the Audio
For optimal audio quality, the audio input levels and the bass, treble, and loudness control must all be set up properly. Input and output (Preamp and Lineout) audio levels may need to be adjusted depending on the variation of output levels from different source devices. By default these switcher input levels are set for the consumer product line level of -10 dBV.
Bass, treble, and loudness should be adjusted once the input and output levels have been adjusted. By default the bass and treble have been set to 0, and loudness has been set to off.
Input level sensitivity can be adjusted via the front panel. Other adjustments must be performed via the supplied MediaLink Control Software (also available at www.extron.com) through the RS-232 port.
3-4
C To avoid damage to your hearing and disturbing occupants of adjacent
rooms, do not connect speakers to the MLS’s amplifier output until setup
MLS 304 Series, MLS 406 Series • Operation and Setup
has been completed and volume has been set to the minimum level.
Configuring Lineout and Preamp output levels
Before adjusting any input levels, you must select an output level from the following options. You do not need to change the output level if the Lineout and Preamp outputs will not be used.
-10 dBV, unbalanced (consumer) (default): typically used when the switcher’s
output is connected to consumer products such as VCRs, stereo receiver­amplifiers, or self-powered speakers with unbalanced inputs
+4 dBu, balanced (professional): typically used when the switcher’s output is
connected to professional products such as mixers, power amplifiers, and some assistive listening devices with balanced inputs.
N Check the manufacturers’ specifications for details on input/output devices you
will connect to the Preamp and Lineout outputs.
Adjusting audio input levels
Adjusting the input level (sensitivity) for each input via the front panel or the supplied control software will ensure that the switcher can deliver maximum power out of the amplifier, output the proper signal on the Lineout and Preamp outputs, and prevent noticeable jumps in audio levels during input switching.
The input level (sensitivity) can be adjusted (-42 dB to +24 dB) for all of the inputs, including the Aux/Mix input. The default input level (sensitivity) for each input is set for -10 dBV, unbalanced, consumer-type signals.
N The Auxiliary/Mix input level can be adjusted via the rear panel only.
It cannot be adjusted via the control software.
Common output levels for audio source devices range from -20 dBV, unbalanced, to +4 dBu, balanced. If the input level sensitivity settings are not closely matched to the source devices’ levels, the signal may be overdriven and distorted.
Consumer portable devices such as personal CD players and laptops typically
have fixed and/or variable unbalanced outputs. If connecting a variable level output to the switcher, you must make adjustments with the source’s volume set to maximum.
Consumer non-portable devices such as VCRs, DVD players, and computer sound cards typically output an unbalanced -10 dBV signal.
Professional products such as preamps, mixers, and signal processors typically output a balanced +4 dBu signal.
N There can be large variations in sources’ output levels. Check the
manufacturers’ specifications for details on devices connected to switcher’s inputs.
Input level adjustments can be made in 1 dB increments/decrements via the front panel or the control software. See chapter 4, Serial Communication for details on software settings.
N Because there are many different output levels for source devices, Extron
recommends that you adjust the input level (sensitivity) for each input. When making these adjustments, use source material with a wide dynamic range. The material should have loud passages that are representative of what will be used in the system.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Operation and Setup
3-5
Operation and Setup, cont’d
MAX
MID
MIN
Signal detection threshold
Min LED lights: a signal of at least -20 dBV (-18 dBu) (a low level consumer product level) is detected at the input.
Clipping level
Max LED blinks or lights: the audio input level is too high; audio will be distorted. Lower the input gain so that this LED does not turn on.
Normal range
Mid LED blinks or lights: input level has been properly adjusted. Adjust the input gain/attenuation until this LED blinks.
MAX
MID
MIN
NOTE If the Max/Clip LED lights, the audio may be clipped.
MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA
Signal: when lit this indicates that a signal of at
least -20 dBV (-18 dBu) is detected at the input.
Peak: a blinking LED indicates the level is set too high.
Normal: the specified output level (-10 dBV or +4 dBu)
has been reached. A blinking LED indicates the level is set properly for max. power output.
MLS 406
Making adjustments
Leave the bass and treble set to 0 and the loudness control set to off (default) before adjusting the input level (sensitivity). Audio input levels must be adjusted with an active audio signal.
1. Connect an active audio source to an input on the switcher.
2. Select the MLS input with the active input signal.
3. Adjust the switcher’s input level via the front panel or the control software
until the desired output level is reached and/or the Mid/normal LED turns on or blinks.
N Increasing the audio level beyond the point at which the Mid/normal LED
blinks may result in a distorted output signal.
Front panel setup mode: press and hold the input button for 3 seconds; the
input’s LED blinks. While still pressing the input button, rotate the Volume knob to adjust the input level.
N For the MA and SA models, in setup mode a blinking or lit Mid/normal LED
indicates that the power amplifier can deliver maximum power output.
PRELIMINARY
3-6
MLS 304 Series, MLS 406 Series • Operation and Setup
4. Once the desired level is reached, release the input button, to save the audio
settings.
Repeat steps 1 through 4 for each input.
5.
6. Fine tune levels including bass, treble, and loudness once all output devices
(speaker, amp, etc.) have been connected.
Loudness control automatically provides the correct amount of bass and treble required to compensate for the change in response of the human ear at low levels. As volume decreases, the MLS automatically boosts the signal at 100 Hz and 10 kHz. As volume is increased, the boost at those frequencies is decreased. By default loudness control is set to off. Use the control software to turn it on. See appendix A, Reference Material for a frequency response graph when loudness is turned on.
Video Signal Routing
The input’s signal format (RGB, S-video, or composite video) determines where the signal is output.
Composite video signals are always output on the Video BNC connector. S-video signals (MLS 406 Series only) are always output on the Y and C (luma and
chroma) BNC output connectors.
RGB/computer-video input signals are sent to the RGB output BNC connectors,
but only if the input is configured as an RGB input.
See pages 2-4 through 2-6 for information on cabling. See pages 4-4 through 4-11 for information on video configuration.
Monitor Output modes
Which signal, if any, is output via the Monitor Output connector depends on the selected input’s signal type and on the Monitor Output mode. Monitor Output modes are selectable only via RS-232 control (see chapter 4, Serial Communication).
• Mode changes affect only how the Monitor Output is determined.
• Changing the mode does not affect the other outputs in any way.
Standard mode (mode 3)
• If the selected input is S-video or composite video, there is no Monitor Output.
• If the selected input is RGB, that input’s signal routed to the Monitor Output.
DA (distribution amplifier) mode (mode 2)
• If any configurable input (3 or 4 on the MLS 304MA and MLS 304SA; 4, 5, or 6 on the MLS 406, MLS 406MA, and MLS 406SA) is S-video or composite video, there is no Monitor Output.
• If all the configurable inputs are set for RGB, the input 4 signal on the MLS 304MA/MLS 304SA or the input 6 signal on the MLS 406/MLS 406MA/ MLS 406SA becomes the Monitor Output, no matter which input is selected.
RGB follow mode (mode 1)
• If all the configurable inputs (3 and 4 on the MLS 304MA and MLS 304SA; 4, 5, and 6 on the MLS 406, MLS 406MA, and MLS 406SA) are RGB, and
• the selected input is MLS 304MA/MLS 304SA input 1 or 2; or MLS 406/ MLS 406MA/MLS 406SA input 1, 2, or 3; the highest numbered (4 or 6, depending on the model) RGB input’s signal is sent to the Monitor Output.
• the selected input is RGB, that signal will be sent to the Monitor Output.
• If the selected input is configurable and any configurable input is set for S-video/ composite video, there is no Monitor Output.
The table on the next page summarizes the modes.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Operation and Setup
3-7
Operation and Setup, cont’d
MediaLink Switcher Rear Panel
RS-232 MLC/IR
TxRxIR+12V
AB C
IR Link
MLA-Remote
SIGNAL
DVD
MLS 304MA, MLS 304SA
Mode Selected input Input special conditions Monitor Output
Standard Any composite video input n.a. None
Any RGB input n.a. Selected input
DA Any input 3 and 4 = RGB Input 4 Any input 3 or 4 = composite video None
RGB follow 1 or 2 3 and 4 = RGB Input 4 3 or 4 = RGB 3 and 4 = RGB Selected input 3 or 4 = composite video 3 or 4 = composite video None
MLS 406, MLS 406MA, MLS 406SA
Mode Selected input Input special conditions Monitor Output
Standard Any S-video or composite video n.a. None
4, 5, or 6 = RGB 4, 5, and 6 = RGB Selected input
DA Any 4, 5, and 6 = RGB Input 6 Any 4, 5, or 6 = S-video or composite video None
RGB follow 1, 2, or 3 4, 5, and 6 = RGB Input 6 4, 5, or 6 = RGB 4, 5, and 6 = RGB Selected input 4, 5, or 6 = S-video 4, 5, or 6 = S-video or composite video or composite video None
n.a. = not applicable
Monitor Output Modes
Remote Control
The MediaLink Switcher can be controlled by using its front panel controls; an optional Extron infrared remote control (the MLA-Remote, for example) and an Extron IR Link signal repeater; a MediaLink Controller; or another RS-232 control device or computer. See Control Connection on page 2-7 for wiring diagrams and system examples.
PRELIMINARY
3-8
MLS 304 Series, MLS 406 Series • Operation and Setup
N Any Extron IR remote control that offers input selection buttons 1 through 6
can be used with the MLS switcher for input switching. Unlike most other models, the MLA-Remote also allows volume control and audio mute.
Troubleshooting
Power on the input and output devices and the switcher. The image should appear on the screen, and sound should be audible.
If the image does not appear or there is no sound
1. Ensure that all devices are plugged in and receiving power. The switcher’s
power LED ( ) lights if the it is receiving power and an active sync signal.
2. Check the cabling, connector wiring, and grounding, and make adjustments
as needed.
3. To test the system setup and output, substitute a video or audio/video test
generator for one of the input devices.
4. Use the control software or a control system to verify that the audio and/or
video is not muted or set to input 0.
5. If no signal is being output from the Monitor Out port, check which Monitor
Out mode has been selected. You may need to change the setting to another mode to obtain the desired output. See pages 3-7, 3-8, and 4-10.
6. Call the Extron S3 Sales and Technical Support Hotline if needed.
If the switcher does not respond to controls
1. Executive mode 1 or 2 may be active. To disable either executive mode, press
and hold input buttons 1 and 4 for 3 seconds, then release them when the input LEDs blink. Executive modes can also be disabled via RS-232 control.
2. Via RS-232 verify that the configurable inputs (inputs 3 and 4 on the
MLS 304MA or MLS 304SA; inputs 4, 5, and 6 for the MLS 406/MLS 406MA/ MLS 406SA) have been set up for the correct input type (RGB or composite video).
If audio input 0 (audio mute) is selected (via RS-232), rotating the Volume
3.
knob does not affect the volume, since an active audio input is not selected. Select an active audio input.
4. If you have just updated the switcher’s firmware (see chapter 4, Serial
Communication), and the power LED lights but the switcher does not respond
to front panel input selections or volume adjustments, you may need to reset the unit to factory defaults (see page 3-4, Resetting the switcher, or page 4-6, Zap command).
Call the Extron S3 Sales and Technical Support Hotline if the switcher still
5.
does not respond after you have performed steps 1 through 4.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Operation and Setup
3-9
Operation and Setup, cont’d
If you are unable to configure the MLS via the Windows®-based software
1. Check the MediaLink Control Software to determine its version number. The
software version number appears in the top bar of the program’s window:
These MLS 304 Series and MLS 406 Series switchers can be set up using
software version 2.1 or higher. Earlier versions are not designed to work with these models.
2. Verify that the connector at the RS-232/MLC/IR port is correctly wired and
that the PC’s correct COM port is selected when you start the software.
PRELIMINARY
3-10
MLS 304 Series, MLS 406 Series • Operation and Setup
MLS 304 Series and MLS 406 Series
Chapter Four
4
Serial Communication
RS-232 Programmer’s Guide
Control Software for Windows
Serial Communication
RS-232/MLC/IR
Tx
Rx IR
12V
A
B
C
Transmit (Tx) Receive (Rx)
Sleeve(s)
+12 V, 0.4 A power output
Ground ( )
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 RS-232/MLC/IR port. Alternatively, the switcher can be controlled by an optional MediaLink Controller (MLC) (connected to the same port) or by an RS-232 device acting through the MLC. The control device (host) can use either Extron’s Simple Instruction Set (SIS) commands or the graphical control program for Windows. For details on use and setup of a system that includes a MediaLink Controller, see the MediaLink Controllers User’s Manual.
Switcher protocol:
• 9600 baud
• 1 stop bit
• no parity
• no flow control
RS-232/MLC/IR connector 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.
PRELIMINARY
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).
Boot V1.00, (c) 2003, ? to Enter (c)Copyright 2004, Extron Electronics, MLS406MA, Vx.xx ]
The MLS sends the boot and copyright messages when it first powers on. Vx.xx is the firmware version number. The MLS 406MA is used in this example.
Chn X! ] (where X! is the input number) The MLS sends this response when an input is switched.
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.
The 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 E23 – Checksum error (for file uploads)
4-2
MLS 304 Series, MLS 406Series • Serial Communication
ASCII to HEX Conversion Table
Symbol definitions
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. Upper- and lower-case characters may be used interchangeably in the command field unless otherwise specified (setting gain/ attenuation, for example).
ASCII to Hex conversion table
] = CR/LF (carriage return/line feed) (hex 0D 0A)
= Space
E = Escape key X! = Specific input number (0 – 6 maximum)
0 = no connection 1 = input 1 2 = input 2 3 = input 3 ... 6 = input 6
X@ = Maximum number of input channels
(1 – 4 [max.] for the MLS 304 Series or 1 – 6 [max.] for the MLS 406 Series)
X# = Video type (can be set for inputs 3 – 4 of the MLS 304
Series or inputs 4 – 6 of the MLS 406 Series only) 1 = Vid (composite video [MLS 304 Series only] and/or S-video [MLS 406 Series only]) 2 = RGB (default)
X$ = Audio gain
(0 dB through +24 dB in 1 dB steps) (default = 0 dB for MLS 304MA, MLS 406, MLS 406MA; default = +6 dB for MLS 304SA, MLS 406SA)
X% = Audio attenuation (1 to 42; 0 dB through -42 dB in
1 dB steps)
X^ = On/off status
0 = off/disable 1 = on/enable
X& = Input to be adjusted (1 – 4 for MLS 304 Series, 1 – 6 for
MLS 406 Series switchers) 1 = input 1 2 = input 2 3 = input 3 ... 6 = input 6
The ASCII to hexadecimal (HEX) conversion table at left is for use with the command/response tables.
X( = Adjustment range (0 – 14) (-10.5 dB – +10.5 dB in
1.5 dB steps) 0 = -10.5 dB 1 = -9.0 dB 2 = -7.5 dB 3 = -6.0 dB 4 = -4.5 dB 5 = -3.0 dB 6 = -1.5 dB 7 = +0 dB (default) 8 = +1.5 dB 9 = +3.0 dB 10 = +4.5 dB 11 = +6.0 dB 12 = +7.5 dB 13 = +9.0 dB 14 = +10.5 dB
X1) = Volume adjustment range (0 – 100 steps) X1! = Switcher firmware version (listed to
two decimal places e.g.: x.xx)
X1@ = Executive mode (front panel lockout) status
0 = unlocked (default) 1 = front panel except volume adjustment is locked
PRELIMINARY
MLS 304 Series, MLS 406Series• Serial Communication
4-3
PRELIMINARY
Serial Communication, cont’d
Command/response table for SIS commands
Command ASCII Command Response Additional description
(host to switcher) (switcher to host)
Input selection
Select an input (audio and video). X! ! Chn X! ] Select input X! (audio and video).
: 6! Chn6 ] Example: select input 6.
Example
Select an audio input. X! $ Aud X! ] Select input X! audio only. Select a video input. X! & Vid X! ] Select input X! video only.
Video configuration (MLS 304MA inputs 3 and 4; or MLS 406/406MA inputs 4, 5, and 6)
Set the video signal type. X@*X#\ Typ X# = ____] Set the input signal type for input
X!. (Type = Vid or RGB)
: 4*1\ Typ1=Vid] Example: set input 4 to S-video or
Example
composite video.
View the video signal type. X@\ Typ X# = ____ ] Show the video signal type Example: 4\ Typ1=Vid ] Example: show input 4 video type.
Audio gain/attenuation (per input)
Set a specific input’s audio gain. X**X$ G InX*Aud=X$ ] Set a single input’s gain (in dB). Example: 5*9G InX*Aud=+09 ] Example: set input 5’s gain to +9 dB.
Set a specific input’s audio attenuation. X** X% g In X* Aud= X% ] Set an input’s attenuation (in dB).
Example: 4*12g In4 Aud=-12 ] Example: set attenuation to -12 dB. Increment a specific input’s gain. X**+G In X* Aud= X$ ] Increase an input’s gain by 1 dB. Decrement a specific input’s gain. X**-G In X* Aud= X$ ] Decrease an input’s gain by 1 dB.
View a specific input’s audio gain level. X**G In X* Aud= X$ ] Show an input’s audio level.
Set current input’s audio gain. X$ G In X* Aud= X$ ] Set the current input’s gain (in dB). Set current input’s audio attenuation. X% g In X* Aud= X% ] Set attenuation (in dB). Increment current input’s gain. +G In X* Aud= X$ ] Increase the gain by 1 dB. Decrement current input’s gain. -G In X* Aud= X$ ] Decrease the gain by 1 dB. View current input’s audio gain level.G In X* Aud= X$ ] Show the audio level.
N The commands in this section are case sensitive.
Audio treble adjustment (global: applies to all inputs)
Set the treble level. X( > Trb=X( ] Set the global treble level.
Example: 2> Trb=-7.5 ] Example: set treble to -7.5 dB. Increment the treble level. + > Trb=X( ] Increase the treble by 1.5 dB. Decrement the treble level. – > Trb=X( ] Decrease the treble by 1.5 dB. View the treble level. > Trb=X( ] Show the current treble level.
Audio bass adjustment (global: applies to all inputs)
Set the bass level. X( < Bas=X( ] Set the global bass level.
Example: 10< Bas=+4.5 ] Example: set the bass to +4.5 dB. Increment the bass level. + < Bas=X( ] Increase the bass by 1.5 dB. Decrement the bass level. – < Bas=X( ] Decrease the bass by 1.5 dB. View the bass level. < Bas=X( ] Show the current bass level.
Audio mute (overall: amp and preamps)
Mute on 1Z Amt1 ] Mute all (fixed, variable, and amplified)
audio outputs.
Mute off 0Z Amt0 ] Unmute all audio outputs. View the audio mute status. Z Amt X& ] Show the status of audio mute.
Volume adjustment (overall: amp and preamps)
Set the overall output volume. X1) V Vol X1) ] Specify the volume for the audio
output.
: 27V Vol027 ] Example: set volume to 27.
Example
4-4
MLS 304 Series, MLS 406Series • Serial Communication
Command/response table for SIS commands (continued)
Command ASCII Command Response Additional description
(host to switcher) (switcher to host)
Increment the volume. +V Vol X1) ] Increase audio output. Decrement the volume. -V Vol X1) ] Decrease audio output. View the volume level. V Vol X1) ] Show the output volume.
Audio status for the active input
These commands allow you to view (or program a control system to monitor) the on/off status of the Clip, Normal, and Signal indicators (the equivalent of viewing the front panel Volume LEDs) between adjustments to the audio input levels. For details on making these adjustments via the front panel controls, see pages 3-2 and 3-3.
View Signal, Normal, & Clip status S or 0S Sig X& Norm X& Clp X& ] View Signal (Min) status 1S X& ] Signal detection threshold:
(Signal level is too low to
0 = off
detect.)
1 = on
(A signal of at least
-20 dBV [-18 dBu] is present.)
View Normal (Mid) status 2S X& ] Normal range:
0 = off
(Input level is too low.)
1 = on
(Input is in the right
range.)
View Clip (Max) status 3S X& ] Clipping level:
0 = off
(Audio input has been set
up properly.)
1 = on
(The level or gain is too high, audio clips/distorts. Output equipment could be damaged. Adjust the MLS’s input level so only the Normal LED is blinking. The Clip LED should not turn on.)
Aux/Mix input
Turn Aux/Mix input on or off. X& M Mix X& ] Turn the Aux/Mix input on/off. View the Aux/Mix status. M Mix X& ] Show whether Aux/Mix input
is turned on or off.
The default Aux/Mix setting is On.
N
Front panel security lockout modes (executive modes)
Disable executive mode. 0X Exe0 ] Adjustments and selections can
be made from the front panel.
Enable executive mode 1. 1X Exe1 ] Lock front panel input selection
buttons; select inputs via RS-232 or IR remote control only. Only volume adjustment is available via the front panel. This command is equivalent to pressing and holding front panel buttons 1 and 4.
Enable executive mode 2. 2X Exe2 ] Lock all front panel selections
and adjustments; select inputs, change volume, etc., via RS-232 only. The whole front panel is locked. Executive mode 2 can be enabled via RS-232 command, 2X only. RS-232 or the front panel can be used to disable this mode.
PRELIMINARY
MLS 304 Series, MLS 406Series • Serial Communication
4-5
Serial Communication, cont’d
Vid • Aud • Vol
X1 X1
X10
Video input # X1
is selected/active.
Audio input
# X1 is
selected/active.
Audio volume status.
Command/response table for SIS commands (continued)
Command ASCII Command Response Additional description
(host to switcher) (switcher to host)
View the executive mode status. X Exe X1@ ] Show executive mode status.
Example: X Exe0 ] Executive mode is off.
Firmware version, part number & information requests
Query firmware version number. Q Ver X1! ] Show the switcher’s firmware
version.
Request the part number. N N60-5X0-0X ] Show the MLS’s part # –
MLS 304MA: 60-550-01 MLS 304SA: 60-550-02 MLS 406: 60-560-01 MLS 406MA: 60-560-02 MLS 406SA: 60-560-03.
Request general info. I (see below) Show the MLS’s status.
PRELIMINARY
Upload firmware
N The MLS must already have firmware version 2.1 or greater in order for these commands to be used. For a switcher
with firmware version 2.0 or earlier, use the firmware uploader utility software instead. See Updating firmware page 4‑12.
Upload E Upload ] Go ] The MLS will start uploading
firmware code into its memory.
Upl ] The firmware was successfully
loaded into the MLS.
View the upload status Q Ver X1! ] Show the switcher’s firmware
version. This is the same as the “query firmware version” command.
?.?? ] This is the response to the
firmware version query if firmware uploading failed.
Reset to default settings (Zap)
Reset all MLS settings/memories . E zXXX ZapXXX ] Reset all settings and
adjustments to the factory default.
4-6
MLS 304 Series, MLS 406Series • Serial Communication
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 following table the values of
X? variable are different for each command/function. These values are given in the right column.
the
Command ASCII Command Response X? values
(host to switcher) (switcher to host) and additional descriptions
Delay times
Set the RGB delay (Triple-Action Switching). 3 * X? # RGBDly*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*7# RGBDly*07] Example: 3.5 second RGB delay.
Audio settings
Set the preamp output mode. 18 * X? # PreAmpMod* X? ] Set the line level audio
(Lineout’s and Preamp’s) outputs to be either mono or stereo signals. 1 = mono 2 = stereo (default)
N
If mono is selected, the audio signal is the same on both the left and right channels.
If stereo is selected, the switcher sends out different (stereo) signals on the left and right channels.
Set the loudness control. 29 * X? # Loudness*X? ] When output volume is low,
Set line level audio outputs’ levels 40 * X? # LineLevel*X? ] 1 = -10 dBV (-8 dBu, 0.32 Vrms),
If the connector is wired for balanced output, the level is +6 dB higher than if it is wired for unbalanced output.
N
provide a +6 dB boost at 100Hz and at 10 kHz. When output volume is high, decrease the boost at those frequencies. This improves sound richness by restoring the high and low frequencies to which the ear is insensitive to at low volume levels. The effect diminishes as volume is increased. 0 = off (default for firmware ver.
2.1 and higher) (remove boost) 1 = on (default for firmware ver.
2.0 and lower) (turn boost on)
unbalanced output (default) 2 = +4 dBu (+6 dBV, 1.23 Vrms), balanced output
PRELIMINARY
Mode selection
Select the Monitor Out output mode 28 * X? # MonitorOutOpt*X? ] See pages 3-7 and 3-8 for an
explanation of these modes. 1 = mode 1 (RGB follow mode) 2 = mode 2 (DA mode) 3 = mode 3 (standard mode)
MLS 304 Series, MLS 406Series • Serial Communication
4-7
Serial Communication, cont’d
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 the same functions as those on the switcher’s front panel and some additional features that are available only through the Windows-based software.
The control software is compatible with Windows 95/98, Windows ME, Windows NT, Windows 2000, and Windows XP. The 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 CD-ROM, and it requires approximately 2 MB (megabytes) of hard disk space.
To install the software on the hard drive:
1. Run SETUP.EXE from the CD-ROM.
2. Follow the instructions that appear on the screen.
By default the installation creates a C:\Extron\MediaLnk directory, in which it places three icons (MediaLink Control Program, MediaLnk Help, and Firmware Loader).
PRELIMINARY
Using the control program
Many items found in the MediaLink Control Program are also accessible via front panel controls. Refer to chapter three for details on features and settings. 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, select the MediaLnk Control Program icon in the
Extron Electronics group or folder on your start menu. The Comm menu appears on the screen.
2. Select the comm port that is connected to the MLS’s RS-232/MLC/IR 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.
4-8
MLS 304 Series, MLS 406Series • Serial Communication
User Mode Screen
The User Mode screen, shown below, includes the most frequently used controls: it emulates the front panel for basic functions (input selection, volume control). See Front Panel Features and Operations on page 3-2 for details on basic functions.
Special features
Audio/video breakaway switching — To switch the audio signal separately from
the video signal, select the Audio checkbox (at the right side of the I/O Switching area) and clear the Video checkbox, then select an input. The MLS switches to that input’s audio source while leaving the previously selected video source active. The picture above shows audio breakaway: video is from input 6 and audio from input 2.
To switch the video signal without changing the audio source, select the
Video check box and clear the Audio checkbox. Selecting Mute selects input 0 (no input).
Mixer on/off toggling — Click this button to toggle the Aux/Mix input on or off. Volume Mute — Select this box (in the lower-left corner) to activate the audio mute
(Amt) command.
Disable Switcher Front Panel
above) toggles executive mode 2 on or off to prevent or enable making any changes or selections via the MLS’s front panel. This feature can be enabled/ disabled via this software or SIS command 2X. You can also disable this feature by pressing and holding front panel buttons 1 and 4 simultaneously.
Disable Selecting Inputs at Switcher — Toggle this feature on to lock the front
panel buttons; only volume control will be adjustable/selectable from the front panel. All other selections and adjustments can be made by IR remote control or via RS-232 (SIS command 1X or via this software). This button toggles executive mode 1 and is equivalent to pressing and holding front panel buttons 1 and 4.
— This feature (shown activated in the picture
PRELIMINARY
MLS 304 Series, MLS 406Series • Serial Communication
4-9
Serial Communication, cont’d
Switcher (MLS) Config Screen
The Switcher (MLS) Config screen, shown below, allows you to make adjustments without having to use the front panel controls. The picture below shows how this screen looks for an MLS 406MA. The quantity of available inputs and the Input Configuration section choices vary depending on the MLS model.
PRELIMINARY
Sample Switcher (MLS) Config screen for an MLS 406 Series switcher
Sample of the top half of the Switcher (MLS) Config screen for an MLS 304MA or MLS 304SA
4-10
MLS 304 Series, MLS 406Series • Serial Communication
On the switcher (MLS) Config Screen you can:
• Set the per-input audio level by adjusting the Audio Input Level slider bar until the output sounds right or measures correctly for maximum power output.
• View and update the view of the selected input’s audio signal level status (Clip, Normal, Signal).
• Turn the Aux/Mix (mixer) input on or off.
• Set loudness boost on or off. If you turn the loudness boost on, when output volume is low the MLS provides a +6 dB boost at 100 Hz and at 10 kHz. When output volume is high, boost is decreased at those frequencies. This improves sound richness by restoring the high and low frequencies to which the ear is insensitive at low volume levels. The effect diminishes as volume is increased.
• Make overall bass and/or treble adjustments.
• Set overall volume.
• Choose between stereo and mono output for the Lineout and Preamp outputs.
• Select either -10 dBV unbalanced output or +4 dBu balanced output for the Lineout and Preamp outputs.
• Set the video format:
• Composite video or RGB for inputs 3 and 4 on an MLS 304MA or MLS 304SA
• Composite video/S-video or RGB for inputs 4 through 6 on an MLS 406, MLS 406MA, or MLS 406SA
• Select the Monitor Output mode. See Video Signal Routing on pages 3-7 and 3-8 for details.
• Set the RGB delay period (for Triple-Action
• Reset the switcher to factory default settings.
Switching).
PRELIMINARY
MLS 304 Series, MLS 406Series • Serial Communication
4-11
Serial Communication, cont’d
File menu options
Saving and restoring configurations
The MLS can be configured by various means (front panel adjustments, downloading settings, or combinations of those methods); 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 (filename).MLK. An unlimited number of 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... .
PRELIMINARY
Follow the on-screen directions. A set of all the switcher and audio
adjustment settings is downloaded into the MLS.
Updating firmware
If the need arises, you can replace the MLS’s firmware without opening the unit or changing firmware chips. Follow the directions below.
This procedure must be performed using a PC on which the MediaLink Control Software (version 2.1 or higher for MLS 304MA, MLS 406, or MLS 406MA; version
2.4 or higher for MLS 304SA and MLS 406SA) has been installed. The PC’s RS-232 port must be directly cabled to the MLS’s RS-232/MLC/IR port.
C Do not attempt to upload firmware if a MediaLink Controller (MLC) or
other control system is connected to the MLS switcher. The RS‑232 cable from the PC must be connected directly to the MLS.
N
1. Visit the Extron Web site (www.extron.com) to find the appropriate
2. Connect a cable between the RS-232/MLC/IR port of the MLS and the serial
3. Start the MediaLink Control program (see Using the control program on
Each time you replace existing firmware, the switcher will be reset to the
factory default settings.
firmware file for the model of switcher (MLS 304MA, MLS 304SA, MLS 406, MLS 406MA, or MLS 406SA) you want to update. Save the new firmware file, and write down the filename and location for later use.
(RS-232) port of the PC (see Control connection on pages 2-7 and 2-8), and power on the MLS.
page 4-8).
4-12
MLS 304 Series, MLS 406Series • Serial Communication
4. From the File pulldown menu in the upper-left corner, select Update
Firmware.
The MediaLink Control Software closes, and a separate utility program opens
and displays a window indicating the current firmware version.
5. Click Upload Firmware file. You are prompted to select the firmware file that
you downloaded in step 1. Click OK.
6. When the browser window opens, locate and select the firmware file, then
click Open to upload the firmware into the MLS.
N
7. Follow the on-screen instructions.
The firmware update file must have a filename extension of .s19. If the file does
not have that extension, it will not work properly.
PRELIMINARY
MLS 304 Series, MLS 406Series • Serial Communication
4-13
Serial Communication, cont’d
8. When the firmware uploading is complete, a dialog box appears and asks you
to exit the firmware update utility program if the new firmware loaded
correctly (if the correct firmware version is displayed in the program window, as shown in the example below)
or
to run the utility again (perform step 5 of this procedure) if the
firmware did not load correctly.
Follow the on-screen directions to complete the process.
N
When you recycle power, power off the switcher for at least 4 seconds, then
restore power.
PRELIMINARY
Using the help program
For information on program features, press the F1 computer key, click on the Help
menu from within the MediaLink control program, or select the MediaLnk Help icon in the Extron Electronics group or folder on your start menu.
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 or function. A description and tips on using the program appears on screen.
Key to file names
File name Description
________.MLK User-saved MLC/MLC-MLS/MLS configuration file. This
includes adjustments/settings. If the MLS is connected to an MLC (MediaLink Controller), the file also contains whatever driver (if any) was installed in the MLC 206 at the time the file was saved.
details.
________.s19 Extron-supplied firmware update file. When the firmware
is replaced, the switcher is also automatically reset to factory default settings.
See the MediaLink Controllers User’s Manual for
4-14
MLS 304 Series, MLS 406Series • Serial Communication
MLS 304 Series and MLS 406 Series
Appendix A
A
Reference Material
Specifications
Part Numbers and Accessories
Frequency Response Graph for the Loudness Feature
Audio Reference Levels
Audio Block Diagrams
PRELIMINARY
Reference Material
Specifications
Video
Gain ................................................ Unity
Bandwidth ..................................... 280 MHz (-3 dB)
Differential phase error ............... 1.0º at 3.58 MHz and 4.43 MHz
Differential gain error .................. 1.0% at 3.58 MHz and 4.43 MHz
Crosstalk ........................................ -68 dB @ 10 MHz, -39 dB @ 100MHz
Switching speed ............................ 5 ms (max.)
Video input and loop-through
Number/signal type
MLS 304 Series ................... 2 RGBHV, RGBS, RGsB, RsGsBs
1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through 2 composite video
MLS 406 Series ................... 3 RGBHV, RGBS, RGsB, RsGsBs
1 RGBHV, RGBS, RGsB, RsGsBs local monitor loop-through 3 S-video 3 composite video
Connectors
MLS 304 Series ................... 2 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through)
2 female RCA (composite video)
MLS 406 Series ................... 3 female 15-pin HD (RGB), 1 female 15-pin HD (RGB loop-through)
3 female 4-pin mini DIN (S-video) 3 female BNC (composite video)
Nominal level ................................ 1 V p-p for Y of S-video, and for composite video
0.7 V p-p for RGB
0.3 V p-p for C of S-video (MLS 406 Series)
Minimum/maximum levels
RGB ..................................... Analog: 0.3 V to 1.5 Vp-p with no offset
S-video, composite video ... Analog: 0.4 V to 2.0 Vp-p with no offset
Impedance ..................................... 75 ohms
Horizontal frequency .................... 15 kHz to 145 kHz
Vertical frequency .......................... 30 Hz to 170 Hz
Return loss
RGB ..................................... <-40 dB @ 5 MHz
S-video ................................ <-25 dB, 0 to 10 MHz
Composite video ............... <-40 dB, 0 to 10 MHz
DC offset (max. allowable)........... 1.5 V
A-2
Video output
Number/signal type
MLS 304 Series ................... 1 RGBHV, RGBS, RGsB, RsGsBs (follows input)
1 composite video
MLS 406 Series ................... 1 RGBHV, RGBS, RGsB, RsGsBs (follows input)
1 S-video 1 composite video
Connectors
MLS 304 Series ................... 5 female BNC (RGB)
1 female BNC (composite)
MLS 406 Series ................... 5 female BNC (RGB)
2 female BNCs (S-video) 1 female BNC (composite)
MLS 304 Series, MLS 406 Series • Reference Material
Nominal level ................................ 1 Vp-p for Y of S-video, and for composite video
0.7 Vp-p for RGB
0.3 Vp-p for C of S-video (MLS 406 Series)
Minimum/maximum levels
RGB ..................................... Analog: 0.3 V to 1.5 Vp-p (follows input)
Composite video ............... Analog: 0.4 V to 2.0 Vp-p (follows input)
Impedance ..................................... 75 ohms
Return loss ..................................... <-40 dB @ 5 MHz
DC offset ........................................ ±5 mV with input at 0 offset
Switching type .............................. Triple-Action (RGB delay)
Sync
Input type ...................................... RGBHV, RGBS, RGsB, RsGsBs
Output type .................................... RGBHV, RGBS, RGsB, RsGsBs (follows input)
Standards ........................................ NTSC 3.58, NTSC 4.43, PAL, SECAM
Input level ..................................... 2.0 V to 5.0 Vp-p
Output level .................................. TTL: 5.0 Vp-p, unterminated
Input impedance .......................... 10k ohms
Output impedance ....................... 75 ohms
Max input voltage ........................ 5.0 Vp-p
Max. propagation delay ............... 30 ns
Max. rise/fall time ........................ 4.0 ns
Polarity............................................ Positive or negative (follows input)
Audio
Gain ................................................ Unbalanced output: 0dB; balanced output: +6dB
Frequency response at 1 watt output
Preamp/Lineout ................ 20 Hz to 20 kHz, ±0.5 dB
Direct (4/8 ohm) ................ 20 Hz to 20 kHz, ±1.0 dB
Transformer (70V mono amplifier)
50 Hz to 20 kHz, +0 dB/-3 dB
Transformer (100V mono amplifier)
50 Hz to 20 kHz, +0 dB/-3 dB
THD + Noise
Power amp (mono or stereo)
0.037% @ 1 kHz at nominal level (1 watt, 8 ohm load)
Preamp ................................ 0.11% @ 1 kHz at nominal level
Lineout ................................ 0.018% @ 1 kHz at nominal level
S/N at maximum power output (unweighted)
Power amp ......................... >75 dB @ 10 Hz to 22 kHz
Preamp ................................ >80 dB @ 10 Hz to 22 kHz
Lineout ................................ >80 dB @ 10 Hz to 22 kHz
Crosstalk
Power amp ......................... <-75 dB @ 1 kHz, fully loaded
Preamp ................................ <-75 dB @ 1 kHz, fully loaded
Lineout ............................... <-80 dB @ 1 kHz, fully loaded
Stereo channel separation ........... >80 dB @ 1 kHz
CMRR ............................................. >85 dB @ 20 Hz to 200 Hz, >75 dB @ 20 Hz to 20 kHz
Bass .................................................. ±10 dB @ 100 Hz
Treble ............................................... ±10 dB @ 10 kHz
Loudness (contour) ....................... +6 dB @ 100 Hz to 10 kHz
PRELIMINARY
MLS 304 Series, MLS 406 Series • Reference Material
A-3
Reference Material, cont’d
Audio input
Number/signal type
MLS 304 Series ................... 4 stereo, unbalanced
1 Aux/Mix balanced/unbalanced mono (nonswitchable)
MLS 406, Series .................. 5 stereo, unbalanced (inputs 1-3, 5, 6)
1 stereo, balanced/unbalanced (input 4) 1 Aux/Mix balanced/unbalanced mono (nonswitchable)
Connectors
MLS 304 Series ................... 2 pairs of female RCA connectors (inputs 1-2)
2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 3-4); tip (L), ring (R), sleeve (GND) (1) 3.5 mm captive screw connector, 3 pole (Aux/Mix input)
MLS 406 Series ................... 3 pairs of female RCA connectors (inputs 1-3)
1 female 3.5 mm captive screw connector, 5 pole (input 4) 2 female 3.5 mm mini stereo jacks (unbalanced only) (inputs 5, 6); tip (L), ring (R), sleeve (GND)
(1) 3.5 mm captive screw connector, 3-pole (Aux/Mix input) Impedance
Nominal level ................................ -10 dBV (316 mVrms)
Maximum level ............................. +8 dBV (10.2 dBu, 2.51 Vrms), unbalanced at <0.1%THD+N
Input gain adjustment ................. -42 dB to +24 dB, adjustable per input
..................................... >10k ohms unbalanced, DC coupled
+10 dBu (7.28 dBV, 2.45 Vrms), balanced at <0.1% THD+N
PRELIMINARY
N
0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV 2 dBu
Audio output — Lineout and Preamp
Number/signal type .................... 2 (1 Lineout/fixed and 1 Preamp/variable) stereo/mono, balanced/
unbalanced
Connectors .................................... (2) 3.5 mm captive screw connectors, 5 pole
Impedance ..................................... 50 ohms unbalanced, 100 ohms balanced
Gain error ...................................... ±0.8 dB channel to channel
Nominal level ................................ Configurable: -10 dBV (316 mVrms, default), +4 dBu (1.23 Vrms)
Maximum level (600 ohm)
Power amp (mono or stereo)
>+17 dBu, balanced < 0.5% THD+N
Preamp ................................ >+19 dBu, balanced < 0.1% THD+N
Lineout ................................ >+16 dBu, balanced < 0.1% THD+N
N
Unbalanced wired outputs produce 6 dB of attenuation. Balanced outputs have unity
gain/attenuation.
Audio output — mono power amp (MLS 304MA, MLS 406MA only)
Number/signal type .................... (1) mono
Connector ...................................... (1) 5-position screw terminal
Sensitivity ....................................... -20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power
output Power bandwidth
Direct (4 ohm) .................... 20 Hz to 20 kHz, 0.5% THD
Direct (8 ohm) .................... 20 Hz to 20 kHz, 0.15% THD
Transformer (70 V) ............ 50 Hz to 20 kHz, 1% THD
Transformer (100 V) .......... 50 Hz to 20 kHz, 0.5% THD
Included parts
A-4
MLS 304 Series, MLS 406 Series • Reference Material
Maximum power output
Direct (4/8 ohm) ................ 20 watts max. (continuous)
Transformer (70/100 V) .... 16 watts max. (continuous), transformer coupled
Protection ....................................... Input limiting, thermal, short circuit
Audio output — stereo power amp (MLS 304SA, MLS 406SA only)
Number/signal type .................... (1) stereo (default) or dual mono (configured via software)
Connector ...................................... (1) 5-position screw terminal
Sensitivity ....................................... -20 dBV (-17.8 dBu; 100 mVrms) (adjustable) for maximum power output
Power bandwidth
Direct (4 ohm) .................... 10 Hz to 20 kHz, 0.5% THD
Direct (8 ohm) .................... 20 Hz to 20 kHz, 0.8% THD
Maximum power output
Direct (4 ohm) .................... 24 watts max. (continuous), 12 watts (rms) per channel
Direct (8 ohm) .................... 16 watts max. (continuous), 8 watts (rms) per channel
Protection ....................................... Input limiting, thermal, short circuit
Control/remote — switcher
Serial control port ......................... RS-232, 3.5 mm captive screw connector, 5 pole (uses 3 poles)
Baud rate and protocol ............... 9600, 8-bit, 1 stop bit, no parity
Serial control pin configurations . 1 = TX, 2 = RX, 4 = GND
Program control ............................. Extron’s configuration program for Windows®
Extron’s Simple Instruction Set (SIS™)
General
Power ............................................. 100 VAC to 240 VAC, 50/60 Hz, 60 watts, internal, autoswitchable
Temperature/humidity ................ Storage -40° to +158°F (-40° to +70°C) / 10% to 90%, noncondensing
Operating +32° to +113°F (0° to +45°C) / 10% to 90%, noncondensing
Rack mount .................................... Yes, with included brackets (#70-077-03)
Enclosure type .............................. Metal
Enclosure dimensions .................. 1.75" H x 17.5" W x 8.5" D (1U high, full rack wide)
4.4 cm H x 44.4 cm W x 21.6 cm D
(Depth excludes connectors and knob) Product weight
MLS 406 .............................. 5.0 lbs (2.3 kg)
Amplified models ............. 6.0 lbs (2.7 kg)
Shipping weight
MLS 406 .............................. 10 lbs (5 kg)
Amplified models ............. 11 lbs (5 kg)
Vibration ........................................ ISTA 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
N
N
All nominal levels are at ±10%.
Specifications are subject to change without notice.
PRELIMINARY
MLS 304 Series, MLS 406 Series • Reference Material
A-5
Reference Material, cont’d
Part Numbers and Accessories
These items are included in each order for an MLS switcher:
Replacement
Included parts
part number
MLS 304MA switcher 60-550-01 MLS 304SA switcher 60-550-02 MLS 406 switcher 60-560-01 MLS 406MA switcher 60-560-02 MLS 406SA switcher 60-560-03 Rubber feet (4) and IEC power cord 3-pole, 3.5 mm captive screw connector 10-319-13 5-pole, 3.5 mm captive screw connectors 10-319-10 Rack mounting bracket kit 70-077-03 MLS 304/406 Series User’s Manual 68-775-01 Windows-based MediaLink
or
or
control software
PRELIMINARY
Optional accessories
These items can be ordered separately:
Accessory Part number
Under-desk mounting brackets 70-222-01 MediaLink Controller (MLC) See catalog or
contact Extron MLA-Remote IR remote control 70-154-01 IR Link IR signal repeater (gray, black, white) 60-404-01, -02, -03 BNCM-RCAF adapters (package of 10) 100-229-01 S-video cable (6 feet) (for MLS 406, MLS 406MA) 26-522-01 VGA with audio cable (6 feet) 26-490-02 SY 15 HDM RGBHVM adapter 26-533-02 SY 15 HDM RGBHVF adapter 26-531-02, -03, -04, -05, -06 CSR 6 captive screw to 2 RCA female adapter 26-575-01
A-6
MLS 304 Series, MLS 406 Series • Reference Material
+10
+8
+6
+4
+2
+0
-2
-4
-6
-8
20 50 100 200 500 1k 2k 5k 10k 20k
1 W
3 W
6 W
14 W
0.5 W
Frequency (Hz)
Loudness (dB)
dBV Voltage dBu
-20 dBV 0.100 V -17.8 dBu
-19 dBV 0.112 V -16.8 dBu
-18 dBV 0.126 V -15.8 dBu
-17 dBV 0.141 V -14.8 dBu
-16 dBV 0.158 V -13.8 dBu
-15 dBV 0.178 V -12.8 dBu
-14 dBV 0.200 V -11.8 dBu
-13 dBV 0.224 V -10.8 dBu
-12 dBV 0.251 V -9.8 dBu
-11 dBV 0.282 V -8.8 dBu
-10 dBV 0.316 V -7.8 dBu
-9 dBV 0.355 V -6.8 dBu
-8 dBV 0.397 V -5.8 dBu
-7 dBV 0.447 V -4.8 dBu
-6 dBV 0.501 V -3.8 dBu
-5 dBV 0.562 V -2.8 dBu
-4 dBV 0.631 V -1.8 dBu
-3 dBV 0.708 V -0.8 dBu
-2 dBV 0.794 V 0.2 dBu
-1 dBV 0.891 V 1.2 dBu 0 dBV 1.000 V 2.2 dBu 1 dBV 1.122 V 3.2 dBu 2 dBV 1.259 V 4.2 dBu 3 dBV 1.413 V 5.2 dBu 4 dBV 1.585 V 6.2 dBu 5 dBV 1.778 V 7.2 dBu 6 dBV 1.995 V 8.2 dBu 7 dBV 2.24 V 9.2 dBu 8 dBV 2.51 V 10.2 dBu 9 dBV 2.82 V 11.2 dBu 10 dBV 3.16 V 12.2 dBu
dBu Voltage dBV
-20 dBu 0.078 V -22.2 dBV
-19 dBu 0.087 V -21.2 dBV
-18 dBu 0.098 V -20.2 dBV
-17 dBu 0.109 V -19.2 dBV
-16 dBu 0.123 V -18.2 dBV
-15 dBu 0.138 V -17.2 dBV
-14 dBu 0.155 V -16.2 dBV
-13 dBu 0.174 V -15.2 dBV
-12 dBu 0.195 V -14.2 dBV
-11 dBu 0.218 V -13.2 dBV
-10 dBu 0.245 V -12.2 dBV
-9 dBu 0.275 V -11.2 dBV
-8 dBu 0.309 V -10.2 dBV
-7 dBu 0.346 V -9.2 dBV
-6 dBu 0.388 V -8.2 dBV
-5 dBu 0.436 V -7.2 dBV
-4 dBu 0.489 V -6.2 dBV
-3 dBu 0.549 V -5.2 dBV
-2 dBu 0.616 V -4.2 dBV
-1 dBu 0.691 V -3.2 dBV 0 dBu 0.775 V -2.2 dBV 1 dBu 0.870 V -1.2 dBV 2 dBu 0.976 V -0.2 dBV 3 dBu 1.095 V 0.8 dBV 4 dBu 1.228 V 1.8 dBV 5 dBu 1.378 V 2.8 dBV 6 dBu 1.546 V 3.8 dBV 7 dBu 1.735 V 4.8 dBV 8 dBu 1.974 V 5.8 dBV 9 dBu 2.184 V 6.8 dBV 10 dBu 2.451 V 7.8 dBV
Frequency Response Graph for the Loudness Feature
The following graph represents the frequency response of these MLS models when the loudness feature has been turned on.
Audio Reference Levels
The specifications for the audio source devices may be listed in one of several units. Or you may wish to use a sine wave generator such as the Extron VTG 300 as a source for setting up audio inputs before the input devices are available. The tables below are a convenient reference for equivalences between dBV, voltage, and dBu.
MLS 304 Series, MLS 406 Series • Reference Material
PRELIMINARY
A-7
Reference Material, cont’d
IN P UT S E LE C T
(L E FT CH AN N EL )
INP UT SE LE C T
(R IGH T C H AN N E L)
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+ -
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+10dB@
100Hz/10kHz
+/-10dB@
100Hz/10kHz
LEFT
LEFT
LEFT
LEFT
CTRL
CTRL
RIGHT
RIGHT
RIGHT
RIGHT
LOUDNESS
LOUDNESS
BASS & TREBLE
VOLUME
AUX/MIX
(Balance/Unbalance)
BASS & TREBLE
PREAMP
LINEOUT
VOLUME
CONTROL
100V
70V
COM
SETUP MODE
USER MODE
MAX/
CLIP
MID/
NORM
MIN/
SIGNAL
+V
RED
GREEN
GREEN
SWITCH
XFMR
POWER LIMITER
CIRCUIT
POWER AMP
20 WATTS
(continuous)
LED
MODE
SWITCH
VOLUME
POSITION
CTRL
Gain/Attenuation:
-42dB to +24dB
Configurable output levels
-10dBV unbalanced or
+4dBV balanced
LEFT CHN
+
AUX/MIX
LEFT
AUX
LEFT CHN
+
AUX/MIX
RIGHT CHN
+
AUX/MIX
CTRL
CTRL
CTRL
1
2
3
4
1
2
3
4
MONO
RIGHT CHN
+
AUX/MIX
MONO
LEFT
AUX
RIGHT
AUX
FILTER
User Mode: Volume Level Indicator Set Up Mode: Input Level Indicator
RIGHT
AUX
Audio Block Diagram for MLS 304MA.eps
SWITCHABLE INPUTS
Gain/Attenuation:
-42dB to +24dB
4 / 8 ohm
+
-
FILTER
Audio Block Diagrams
MLS 304MA audio block diagram
PRELIMINARY
A-8
MLS 304 Series, MLS 406 Series • Reference Material
IN P UT S E LE C T
(L E FT CH AN N EL )
INP UT SE LE C T
(R IGH T C H AN N E L)
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+ -
+10dB@
100Hz/10kHz
+/-10dB@
100Hz/10kHz
LEFT
LEFT
LEFT
LEFT
CTRL
CTRL
RIGHT
RIGHT
RIGHT
RIGHT
LOUDNESS
LOUDNESS
BASS & TREBLE
VOLUME
AUX/MIX
(Balance/Unbalance)
BASS & TREBLE
LINEOUT
VOLUME
CONTROL
SETUP MODE
USER MODE
MAX/
CLIP
MID/
NORM
MIN/
SIGNAL
+V
RED
GREEN
GREEN
LED
MODE
SWITCH
VOLUME
POSITION
CTRL
Gain/Attenuation:
-42dB to +24dB
Configurable output levels
-10dBV unbalanced or
+4dBV balanced
LEFT CHN
+
AUX/MIX
LEFT
AUX
CTRL
CTRL
CTRL
1
2
3
4
1
2
3
4
MONO
RIGHT CHN
+
AUX/MIX
LEFT
AUX
RIGHT
AUX
User Mode: Volume Level Indicator Set Up Mode: Input Level Indicator
RIGHT
AUX
Audio Block Diagram for MLS 304SA.eps
SWITCHABLE INPUTS
Gain/Attenuation:
-42dB to +24dB
MUX
+4
-10
MUX
+4
-10
+ -+-
PREAMP
LEFT CHN
+
AUX/MIX
RIGHT CHN
+
AUX/MIX
4 / 8 ohm
POWER LIMITER CIRCUIT
STEREO (DEFAULT) OR DUAL MONO OUTPUT
+
-
FILTER
FILTER
+
-
FILTER
FILTER
LEFT OR MONO
RIGHT OR MONO
Note: Output terminal should not be bridged or shorted.
POWER AMP
DIRECT (4 ohm) - 12 WATTS PER CHANNEL
(continuous)
DIRECT (8 ohm) - 8 WATTS PER CHANNEL
(continuous)
LEFT
RIGHT
MUX
MUX
MONO
MONO
CTRL
STEREO
OR
MONO
MLS 304SA audio block diagram
PRELIMINARY
MLS 304 Series, MLS 406 Series • Reference Material
A-9
Reference Material, cont’d
INPUT SELECT
(LEFT CHANNEL)
SWITCHABLE INPUTS
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+ -
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+10dB@
100Hz/10kHz
+/-10dB@
100Hz/10kHz
LEFT
LEFT
LEFT
CTRL
RIGHT
RIGHT
RIGHT
RIGHT
RIGHT
LOUDNESS
LOUDNESS
BASS & TREBLE
VOLUME
AUX/MIX
(Balance/Unbalance)
BASS & TREBLE
PREAMP
LINEOUT
VOLUME
CONTROL
4 / 8 ohm
100V
70V
COM
SETUP MODE
USER MODE
MAX/
CLIP
MID/
NORM
MIN/
SIGNAL
+V
RED
GREEN
GREEN
SWITCH
XFMR
POWER LIMITER
CIRCUIT
POWER AMP
20 WATTS
(continuous)
LED
MODE
SWITCH
VOLUME POSITION
CTRL
Gain/Attenuation:
-42dB to +24dB
Gain/Attenuation:
-42dB to +24dB
Configurable output levels
-10dBV unbalanced or
+4dBV balanced
LEFT CHN
+
AUX/MIX
LEFT
AUX
LEFT CHN
+
AUX/MIX
RIGHT CHN
+
AUX/MIX
CTRL
CTRL
CTRL
MONO
RIGHT CHN
+
AUX/MIX
MONO
LEFT
AUX
RIGHT
AUX
FILTER
+
-
User Mode: Volume Level Indicator Set Up Mode: Input Level Indicator
RIGHT
AUX
FILTER
Audio Block Diagram for MLS 406_406MA.eps
MLS 406MA only
LEFT
LEFT
CTRL
1
2
3
4
5
6
INPUT SELECT
(RIGHTCHANNEL)
1
2
3
4
5
6
+ -+-
+ -+-
MLS 406, MLS 406MA audio block diagram
PRELIMINARY
A-10
MLS 304 Series, MLS 406 Series • Reference Material
INPUT SELECT
(LEFT CHANNEL)
SWITCHABLE INPUTS
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -+-
+ -
MUX
+4
-10
MUX
+4
-10
+ -+-
+10dB@
100Hz/10kHz
+/-10dB@
100Hz/10kHz
LEFT
LEFT
LEFT
CTRL
RIGHT
RIGHT
RIGHT
RIGHT
RIGHT
LOUDNESS
LOUDNESS
BASS & TREBLE
VOLUME
AUX/MIX
(Balance/Unbalance)
BASS & TREBLE
PREAMP
LINEOUT
VOLUME
CONTROL
SETUP MODE
USER MODE
MAX/
CLIP
MID/
NORM
MIN/
SIGNAL
+V
RED
GREEN
GREEN
LED
MODE
SWITCH
VOLUME
POSITION
CTRL
Gain/Attenuation:
-42dB to +24dB
Gain/Attenuation:
-42dB to +24dB
Configurable output levels
-10dBV unbalanced or
+4dBV balanced
LEFT CHN
+
AUX/MIX
LEFT
AUX
LEFT CHN
+
AUX/MIX
RIGHT CHN
+
AUX/MIX
CTRL
CTRL
CTRL
MONO
RIGHT CHN
+
AUX/MIX
LEFT
AUX
RIGHT
AUX
User Mode: Volume Level Indicator Set Up Mode: Input Level Indicator
RIGHT
AUX
Audio Block Diagram for MLS 406 SA.eps
LEFT
LEFT
CTRL
1
2
3
4
5
6
INPUT SELECT
(RIGHTCHANNEL)
1
2
3
4
5
6
+ -+-
+ -+-
4 / 8 ohm
POWER LIMITER
CIRCUIT
STEREO (DEFAULT) OR DUAL MONO OUTPUT
+
-
FILTER
FILTER
+
-
FILTER
FILTER
LEFT OR MONO
RIGHT OR MONO
Note: Output terminal should not be bridged or shorted.
POWER AMP
DIRECT (4 ohm) - 12 WATTS PER CHANNEL
(continuous)
DIRECT (8 ohm) - 8 WATTS PER CHANNEL
(continuous)
LEFT
RIGHT
MUX
MUX
MONO
MONO
CTRL
STEREO
OR
MONO
MLS 406SA audio block diagram
PRELIMINARY
MLS 304 Series, MLS 406 Series • Reference Material
A-11
Reference Material, cont’d
PRELIMINARY
This page was deliberately left blank
A-12
MLS 304 Series, MLS 406 Series • Reference Material
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, Europe
Extron Electronics Beeldschermweg 6C 1001 East Ball Road 3821 AH Amersfoort Anaheim, CA 92805, USA The Netherlands
Asia: Japan:
Extron Electronics, Asia Extron Electronics, Japan 135 Joo Seng Road, #04-01 Kyodo Building., PM Industrial Bldg. 16 Ichibancho Singapore 368363 Chiyoda-ku, Tokyo 102-0082 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 (714) 491-1500 (USA), 31.33.453.4040 (Europe), 65.383.4400 (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, USA
1230 South Lewis Street Anaheim, CA 92805 USA
714.491.1500 Fax 714.491.1517
Extron Electronics, Europe
Beeldschermweg 6C 3821 AH Amersfoort The Netherlands +31.33.453.4040 Fax +31.33.453.4050
Extron Electronics, Asia
135 Joo Seng Road, #04-01 PM Industrial Building Singapore 368363 +65.6383.4400 Fax +65.6383.4664
Extron Electronics, Japan
Kyodo Building 16 Ichibancho Chiyoda-ku, Tokyo 102-0082 Japan +81.3.3511.7655 Fax +81.3.3511.7656
www.extron.com
© 2006 Extron Electronics. All rights reserved.
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