MPS 112 and MPS 112CS
Media Presentation Switchers
68-706-01 Rev. F
11 04
This symbol is intended to alert the user of important operating and maintenance
(servicing) instructions in the literature provided with the equipment.
This symbol is intended to alert the user of the presence of uninsulated dangerous
voltage within the product's enclosure that may present a risk of electric shock.
Caution
Read Instructions • Read and understand all safety and operating instructions before using the
equipment.
Retain Instructions • The safety instructions should be kept for future reference.
Follow Warnings • Follow all warnings and instructions marked on the equipment or in the user
information.
Avoid Attachments • Do not use tools or attachments that are not recommended by the equipment
manufacturer because they may be hazardous.
Warning
Power sources • This equipment should be operated only from the power source indicated on the
product. This equipment is intended to be used with a main power system with a grounded
(neutral) conductor. The third (grounding) pin is a safety feature, do not attempt to bypass or
disable it.
Power disconnection • To remove power from the equipment safely, remove all power cords from
the rear of the equipment, or the desktop power module (if detachable), or from the power
source receptacle (wall plug).
Power cord protection • Power cords should be routed so that they are not likely to be stepped on or
pinched by items placed upon or against them.
Servicing • Refer all servicing to qualified service personnel. There are no user-serviceable parts
inside. To prevent the risk of shock, do not attempt to service this equipment yourself because
opening or removing covers may expose you to dangerous voltage or other hazards.
Slots and openings • If the equipment has slots or holes in the enclosure, these are provided to
prevent overheating of sensitive components inside. These openings must never be blocked by
other objects.
Lithium battery • There is a danger of explosion if battery is incorrectly replaced. Replace it only
with the same or equivalent type recommended by the manufacturer. Dispose of used batteries
according to the manufacturer's instructions.
Ce symbole sert à avertir l’utilisateur que la documentation fournie avec le
matériel contient des instructions importantes concernant l’exploitation et la
maintenance (réparation).
Ce symbole sert à avertir l’utilisateur de la présence dans le boîtier de l’appareil de
tensions dangereuses non isolées posant des risques d’électrocution.
Attention
Lire les instructions• Prendre connaissance de toutes les consignes de sécurité et d’exploitation avant
d’utiliser le matériel.
Conserver les instructions• Ranger les consignes de sécurité afin de pouvoir les consulter à l’avenir.
Respecter les avertissements • Observer tous les avertissements et consignes marqués sur le matériel ou
présentés dans la documentation utilisateur.
Eviter les pièces de fixation • Ne pas utiliser de pièces de fixation ni d’outils non recommandés par le
fabricant du matériel car cela risquerait de poser certains dangers.
Avertissement
Alimentations• Ne faire fonctionner ce matériel qu’avec la source d’alimentation indiquée sur
l’appareil. Ce matériel doit être utilisé avec une alimentation principale comportant un fil de
terre (neutre). Le troisième contact (de mise à la terre) constitue un dispositif de sécurité :
n’essayez pas de la contourner ni de la désactiver.
Déconnexion de l’alimentation• Pour mettre le matériel hors tension sans danger, déconnectez tous
les cordons d’alimentation de l’arrière de l’appareil ou du module d’alimentation de bureau (s’il
est amovible) ou encore de la prise secteur.
Protection du cordon d’alimentation • Acheminer les cordons d’alimentation de manière à ce que
personne ne risque de marcher dessus et à ce qu’ils ne soient pas écrasés ou pincés par des objets.
Réparation-maintenance • Faire exécuter toutes les interventions de réparation-maintenance par un
technicien qualifié. Aucun des éléments internes ne peut être réparé par l’utilisateur. Afin
d’éviter tout danger d’électrocution, l’utilisateur ne doit pas essayer de procéder lui-même à ces
opérations car l’ouverture ou le retrait des couvercles risquent de l’exposer à de hautes tensions
et autres dangers.
Fentes et orifices • Si le boîtier de l’appareil comporte des fentes ou des orifices, ceux-ci servent à
empêcher les composants internes sensibles de surchauffer. Ces ouvertures ne doivent jamais
être bloquées par des objets.
Lithium Batterie • Il a danger d'explosion s'll y a remplacment incorrect de la batterie. Remplacer
uniquement avec une batterie du meme type ou d'un ype equivalent recommande par le
constructeur. Mettre au reut les batteries usagees conformement aux instructions du fabricant.
Safety Instructions • English
Consignes de Sécurité • Français
Sicherheitsanleitungen • Deutsch
Dieses Symbol soll dem Benutzer in der im Lieferumfang enthaltenen
Dokumentation besonders wichtige Hinweise zur Bedienung und Wartung
(Instandhaltung) geben.
Dieses Symbol soll den Benutzer darauf aufmerksam machen, daß im Inneren des
Gehäuses dieses Produktes gefährliche Spannungen, die nicht isoliert sind und
die einen elektrischen Schock verursachen können, herrschen.
Achtung
Lesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden, sollten Sie alle Sicherheits-
und Bedienungsanleitungen genau durchlesen und verstehen.
Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit des Produktes sollten Sie
aufbewahren, damit Sie im Bedarfsfall darauf zurückgreifen können.
Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungen auf dem Gerät oder in
der Benutzerdokumentation.
Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, die nicht ausdrücklich vom
Hersteller empfohlen wurden, da diese eine Gefahrenquelle darstellen können.
Vorsicht
Stromquellen • Dieses Gerät sollte nur über die auf dem Produkt angegebene Stromquelle betrieben
werden. Dieses Gerät wurde für eine Verwendung mit einer Hauptstromleitung mit einem
geerdeten (neutralen) Leiter konzipiert. Der dritte Kontakt ist für einen Erdanschluß, und stellt
eine Sicherheitsfunktion dar. Diese sollte nicht umgangen oder außer Betrieb gesetzt werden.
Stromunterbrechung • Um das Gerät auf sichere Weise vom Netz zu trennen, sollten Sie alle
Netzkabel aus der Rückseite des Gerätes, aus der externen Stomversorgung (falls dies möglich
ist) oder aus der Wandsteckdose ziehen.
Schutz des Netzkabels • Netzkabel sollten stets so verlegt werden, daß sie nicht im Weg liegen und
niemand darauf treten kann oder Objekte darauf- oder unmittelbar dagegengestellt werden
können.
Wartung • Alle Wartungsmaßnahmen sollten nur von qualifiziertem Servicepersonal durchgeführt
werden. Die internen Komponenten des Gerätes sind wartungsfrei. Zur Vermeidung eines
elektrischen Schocks versuchen Sie in keinem Fall, dieses Gerät selbst öffnen, da beim Entfernen
der Abdeckungen die Gefahr eines elektrischen Schlags und/oder andere Gefahren bestehen.
Schlitze und Öffnungen • Wenn das Gerät Schlitze oder Löcher im Gehäuse aufweist, dienen diese
zur Vermeidung einer Überhitzung der empfindlichen Teile im Inneren. Diese Öffnungen dürfen
niemals von anderen Objekten blockiert werden.
Litium-Batterie • Explosionsgefahr, falls die Batterie nicht richtig ersetzt wird. Ersetzen Sie
verbrauchte Batterien nur durch den gleichen oder einen vergleichbaren Batterietyp, der auch
vom Hersteller empfohlen wird. Entsorgen Sie verbrauchte Batterien bitte gemäß den
Herstelleranweisungen.
Este símbolo se utiliza para advertir al usuario sobre instrucciones importantes de
operación y mantenimiento (o cambio de partes) que se desean destacar en el
contenido de la documentación suministrada con los equipos.
Este símbolo se utiliza para advertir al usuario sobre la presencia de elementos con
voltaje peligroso sin protección aislante, que puedan encontrarse dentro de la caja
o alojamiento del producto, y que puedan representar riesgo de electrocución.
Precaucion
Leer las instrucciones • Leer y analizar todas las instrucciones de operación y seguridad, antes de usar
el equipo.
Conservar las instrucciones • Conservar las instrucciones de seguridad para futura consulta.
Obedecer las advertencias • Todas las advertencias e instrucciones marcadas en el equipo o en la
documentación del usuario, deben ser obedecidas.
Evitar el uso de accesorios • No usar herramientas o accesorios que no sean especificamente
recomendados por el fabricante, ya que podrian implicar riesgos.
Advertencia
Alimentación eléctrica • Este equipo debe conectarse únicamente a la fuente/tipo de alimentación
eléctrica indicada en el mismo. La alimentación eléctrica de este equipo debe provenir de un
sistema de distribución general con conductor neutro a tierra. La tercera pata (puesta a tierra) es
una medida de seguridad, no puentearia ni eliminaria.
Desconexión de alimentación eléctrica • Para desconectar con seguridad la acometida de
alimentación eléctrica al equipo, desenchufar todos los cables de alimentación en el panel trasero
del equipo, o desenchufar el módulo de alimentación (si fuera independiente), o desenchufar el
cable del receptáculo de la pared.
Protección del cables de alimentación • Los cables de alimentación eléctrica se deben instalar en
lugares donde no sean pisados ni apretados por objetos que se puedan apoyar sobre ellos.
Reparaciones/mantenimiento • Solicitar siempre los servicios técnicos de personal calificado. En el
interior no hay partes a las que el usuario deba acceder. Para evitar riesgo de electrocución, no
intentar personalmente la reparación/mantenimiento de este equipo, ya que al abrir o extraer las
tapas puede quedar expuesto a voltajes peligrosos u otros riesgos.
Ranuras y aberturas • Si el equipo posee ranuras o orificios en su caja/alojamiento, es para evitar el
sobrecalientamiento de componentes internos sensibles. Estas aberturas nunca se deben obstruir
con otros objetos.
Batería de litio • Existe riesgo de explosión si esta batería se coloca en la posición incorrecta.
Cambiar esta batería únicamente con el mismo tipo (o su equivalente) recomendado por el
fabricante. Desachar las baterías usadas siguiendo las instrucciones del fabricante.
Instrucciones de seguridad • Español
Precautions
Quick Start — MPS Series
Installation
Step 1
Turn off power to the MPS switcher and all other
devices that will be connected.
Step 2
Select your mounting option and install the
appropriate brackets. Mount the switcher.
Step 3
Attach up to four VGA, four S-video, and four
Video (composite) input devices (up to four of
each type) to the MPS switcher.
Step 4
Connect a VGA output, an S-video output, and a
Video (composite) output from the switcher to a
projector’s inputs.
Step 5
For stereo input, connect up to 12 audio sources
to the audio inputs of the VGA, S-video, or Video
(composite) groups (up to four audio sources for
each group). See chapter two, Installation, for
wiring diagrams.
Step 6
For stereo audio output, connect an audio output
device to each of the three groups and one audio
amplifier to the Program Audio output
connectors. See chapter two, Installation, for
wiring diagrams.
Step 7
If the MPS switcher is to be connected to a
computer or host controller for remote control,
connect the host’s RS-232 cable to the 9-pin
female RS-232 remote connector of the switcher.
For more information, see the Remote Control Port
(RS-232) section in chapter 5.
51
9
5
9
6
Female Male
1
6
RS-232 remote connector
Step 8
Power up the input and output devices, then
connect power to the rear AC connector of the
switcher. See the appropriate chapters in this
manual for further details.
Connecting the MPS switcher
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Amplifier
Projector
VCR (4)DVD (4)
Microphone
Computer (2)
Laptop (2)
Speakers
Extron
MPS 112CS
Media Presentation
Switcher
#8 Screw (4 Plcs)
Each Side
Mounting Screws (2 Plcs)
Each Side
or
Supplied Rack Mounting Bracket
Optional Furniture Mounting Bracket
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Extron
MPS 112
Media Presentation
Switcher
Mounting options
Pin RS-232 function Description
1 – No connection
2 Tx Transmit data
3 Rx Receive data
4 – No connection
5 Gnd Signal ground
6, 7 – No connection
8, 9 – No connection
RS-232 remote connector pinout table
Quick Start — MPS Series, cont’d
Optimizing the audio
1. Finish installation and wiring as described on
the previous page, turn on all equipment, and
provide an input signal to the MPS switcher.
2. Reset program audio volume by pressing and
holding the Mode button, then pressing and
releasing the Prog Vol Reset button. Release
the Mode button to return to normal
operating mode.
3. Select an input with a signal present, adjust
the volume of the audio amplifier connected
to the Prog Out audio connectors to achieve
the desired sound level.
4. Turn on or off the microphone power (15V for
MPS 112 and 48V phantom power for
MPS 112CS) by pressing and holding the
Mode button for more than 2 seconds until
the front panel LEDs change to view mode,
then pressing and releasing the Mic Power
On/Off button. On the MPS 112CS, the
associated LED lights.
5. Turn on the microphone by pressing the Mix
button (the associated LED lights).
6. Reset the microphone volume by pressing and
holding the Mode button, then pressing and
releasing the Mic Vol Reset button. Release
the Mode button to return to normal
operating mode.
7. Talk into the microphone in a normal voice
and adjust the Mic Volume knob to the
desired sound level.
8. Subsequently, use the Program Volume and
Mic Volume knobs on the MPS switcher to
adjust the volume.
Setting the microphone
talk-over threshold
1. Finish installation wiring and setup as
described in the previous sections.
2. Turn on the microphone by pressing the Mix
button (the associated LED lights).
3. Speak into the microphone in a normal voice;
the main program audio level should drop
moderately. If not, lower the threshold by
pressing and holding the Mix button and
turning the Mic Volume knob counter-
clockwise. Release the Mix button to return to
normal operating mode.
4. Stop speaking into the microphone; the main
program audio should recover to the previous
level after approximately four seconds. If not,
increase the threshold by pressing and holding
the Mix button and turning the Mic Volume
knob clockwise. Release the Mix button to
return to normal operating mode.
i
MPS Series • Table of Contents
Table of Contents
Chapter 1 • Introduction ................................................................................. 1-1
About the MPS Series ......................................................................................... 1-2
MPS Series Features ............................................................................................ 1-2
Chapter 2 • Installation.......................................................................................................... 2-1
Mounting the Switcher .................................................................................................... 2-2
Rack mounting ................................................................................................................... 2-2
Table or wall mounting ..................................................................................................... 2-2
Through-desk mounting.................................................................................................... 2-3
Rear Panel Connectors ..................................................................................................... 2-3
Connecting the MPS Switcher ...................................................................................... 2-4
Audio input and output .................................................................................................... 2-6
Connecting the RCA audio connectors ......................................................................... 2-6
Connecting the 3.5 mm mini-plugs............................................................................... 2-6
Microphone input .............................................................................................................. 2-6
Connecting the 1/4" (6.3 mm) microphone connector (MPS 112) ................................. 2-6
Connecting the 3-pole captive screw microphone connector (MPS 112CS)................... 2-7
Program audio output (MPS 112CS) ................................................................................. 2-7
Remote connection ............................................................................................................ 2-8
Chapter 3 • Operation ............................................................................................................. 3-1
Front Panel Features ......................................................................................................... 3-2
Video/audio group buttons ............................................................................................... 3-2
Microphone and Program Audio controls ........................................................................ 3-2
Secondary button functions ...............................................................................................3-2
Front Panel Operation ...................................................................................................... 3-3
Input selection in Single Switcher mode .......................................................................... 3-3
Input selection in Separate Switcher mode ...................................................................... 3-3
View Mode ......................................................................................................................... 3-4
Determining and selecting the switcher mode ................................................................ 3-4
Front panel security lockout (Executive mode) ................................................................ 3-5
Program audio ................................................................................................................... 3-5
Single Switcher mode ......................................................................................................... 3-5
Separate Switcher mode............................................................................................... 3-5
Program audio volume ................................................................................................. 3-5
Reset program audio volume ....................................................................................... 3-5
Program audio mute .................................................................................................... 3-6
Microphone controls.......................................................................................................... 3-6
Turn mic or phantom power on/off .............................................................................. 3-6
Mic mix ......................................................................................................................... 3-6
Mic volume ................................................................................................................... 3-6
Reset mic volume.......................................................................................................... 3-6
Setting mic “talk-over” threshold ..................................................................................... 3-6
MPS Series • Table of Contents
Table of Contents, cont’d
ii
68-706-01 Rev. F
Printed in the USA
10 04
Chapter 4 • Windows
®
-based Control Program ..................................................... 4-1
Installing the Windows-based Control Software ............................................... 4-2
Using the Software ............................................................................................................ 4-2
Uploading Firmware Updates ....................................................................................... 4-3
Chapter 5 • Programmer’s Guide..................................................................................... 5-1
Remote Control Port (RS-232)....................................................................................... 5-2
Host-to-MPS Communications ...................................................................................... 5-2
MPS switcher-initiated messages ...................................................................................... 5-2
MPS switcher error responses ........................................................................................... 5-3
Using the command/response table ................................................................................. 5-3
Symbol definitions ..............................................................................................................5-3
Command/Response Table for SIS Commands .................................................................. 5-4
Uploading firmware to the MPS via an SIS command ..................................................... 5-6
Appendix • Reference Information............................................................................... A-1
Specifications....................................................................................................................... A-2
Part Numbers ....................................................................................................................... A-6
Included parts ................................................................................................................... A-6
Optional accessories ......................................................................................................... A-6
Cables ................................................................................................................................ A-6
Bulk cable ........................................................................................................................... A-6
Assorted connectors........................................................................................................... A-7
Pre-cut cables ..................................................................................................................... A-7
All trademarks mentioned in this manual are the properties of their respective owners.
MPS Series • Introduction
Introduction
1-2
About the MPS Series
The Extron MPS 112 and MPS 112CS are media presentation switchers featuring
three A/V switchers and a program audio switcher with microphone pre-amplifier
and mute controls in one product. The A/V switchers include a four input, one
output VGA/audio switcher, a four input, one output S-video/audio switcher, and
a four input, one output composite video/audio switcher. The MPS 112 and
MPS 112CS accept microphone input and will mix the microphone signal with the
main audio in “talk-over” mode. Both models have an RS-232 control port. The
MPS 112CS also features switchable 48 V phantom power for the microphone.
The MPS Series is a one box solution for small presentation systems.
MPS Series Features
Multiple video inputs — Twelve inputs can include four VGA (or SVGA, UXGA,
RGBHV, RGBS, RGsB, or RsGsBs) inputs on 15-pin HD female connectors,
four S-video (NTSC, PAL, or SECAM) inputs on 4-pin mini DIN female
connectors, and four composite video (NTSC, PAL, or SECAM) inputs on
BNC female connectors.
Multiple video outputs — Three outputs for simultaneous (in Separate mode), or
one at a time (in Single mode) display on VGA, S-video, or composite video
devices.
Multiple audio inputs — Twelve inputs can include four in the VGA group on
3.5 mm female stereo mini jacks, four in the S-video group on pairs of female
RCA connectors, and four in the Video group on pairs of female RCA
connectors.
Multiple audio outputs — One output for each group (VGA, S-video, and Video),
plus Program Out.
Program audio switcher — A three input, one output stereo audio switching
system allows the audio input of any video group to be selected for program
audio output, with volume and mute control. The MPS 112 features
unbalanced program audio output on RCA connectors, while the MPS 112CS
has balanced/unbalanced program audio output on a 5-pole captive screw
connector.
Bandwidth — Bandwidth is 350 MHz (-3 dB), typical for VGA video, allowing
this switcher to switch everything from NTSC video to high-resolution
computer displays.
Microphone input — Built-in microphone amplifier is switchable with
microphone power (MPS 112 - 15V and MPS 112CS - 48V phantom power).
The MPS 112 features unbalanced microphone input on one 1/4" (6.3 mm)
jack, while the MPS 112CS has balanced/unbalanced microphone input on a
3-pole captive screw connector. Mix button for “talk-over,” with adjustable
threshold control and mix volume control.
Front panel security lockout (Executive mode) — Locks out all front panel
functions except input selection and program volume control to prevent
unwanted setting changes.
RS-232 remote control — Allows remote control of MPS switcher using Extron’s
Simple Instruction Set (SIS
™
), Extron’s control software for Windows
®
, or a
control system.
Rack-mountable — The 1U high, full rack width, metal enclosure is rack-
mountable, with supplied rack mounting brackets.
MPS Series • Installation
2-2
Installation
Mounting the Switcher
The MPS 112 and MPS 112CS are housed in 1U high, 17.4" wide metal enclosures
that are rack- or desk-mountable. The appropriate rack/desk mounting kit
(#70-077-03) is included with the switchers. The switchers may also be surface-
mounted under a table, desk, or podium, or on a wall, using an optional Extron 1U
enclosure under-desk mounting kit (#70-222-01).
Rack mounting
Rack mount the switcher as follows:
1. Attach the supplied rack mounting brackets to the switcher with the eight
provided #8 machine screws (figure 2-1).
2. Insert the switcher into the rack, align the holes in the mounting bracket with
those of the rack.
3. Secure the switcher to the rack using the supplied machine screws.
Table or wall mounting
The table/wall mounting brackets extend approximately 1/4" (6.4 mm) above the
top surface of the switcher enclosure. This design allows for an air space between
the enclosure and the surface to which it is mounted. Table or wall mount the
switcher as follows:
1. Attach the table/wall mounting brackets to the switcher with the eight
provided #8 machine screws (figure 2-1).
2. Hold the switcher with the attached brackets against the underside of the
table or other furniture, or against the wall. Mark the location of the screw
holes of the bracket on the mounting surface.
3. Drill 3/32" (2 mm) diameter pilot holes, 1/4" (6.4 mm) deep in the mounting
surface at the marked screw locations.
4. Insert #8 wood screws into the four pilot holes. Tighten each screw into the
mounting surface until just less than 1/4" of the screw’s head protrudes.
Figure 2-1 — Mounting the MPS switcher
#8 Screw (4 Plcs)
Each Side
Mounting Screws (2 Plcs)
Each Side
or
Supplied Rack Mounting Bracket
Optional Furniture Mounting Bracket
50/60 Hz
100-240V 0.5A MAX
(VIDEO)
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(S-VIDEO)
AUDIO
VIDEO VGA
(VGA)
MIC IN
S-VIDEO
MPS Series • Installation
2-3
5. Align the mounting screws with the slots in the brackets and place the
switcher against the surface, with the screws through the bracket slots.
6. Slide the switcher slightly forward or back, then tighten all four screws to
secure the switcher in place.
Through-desk mounting
Mount the switcher through a desk or podium as follows:
1. Attach the supplied mounting brackets to the switcher with the machine
screws provided (figure 2-1).
2. Cut the proper sized hole in the mounting surface.
3. Hold the switcher with the attached brackets against the underside of the
table or other furniture. Mark the location of the screw holes of the bracket on
the mounting surface.
4. Drill 3/32" (2 mm) diameter pilot holes, 1/4" (6.3 mm) deep in the mounting
surface at the marked screw locations.
5. Insert four #8 wood screws through the bracket and into the four pilot holes.
Tighten all four screws to secure the switcher in place.
Rear Panel Connectors
50/60 Hz
100-240V 0.5A MAX
(VIDEO)
MPS 112
PROG OUT
OUT4321
OUT
OUT
OUT
RS-232
432
2
1
1
2
1
4
3
4
3
L
R
OUT4321
(S-VIDEO)
AUDIO
VIDEO VGA (VGA)
MIC IN
S-VIDEO
2 6 14 1693
5
7
8
11
10
4
1 15 17 18
Figure 2-2 — Rear panel of MPS 112
50/60 Hz
100-240V 0.5A MAX
(VIDEO)
MPS 112CS
PROG OUT
OUT4321
OUT
OUT
OUT
RS-232
432
2
1
1
2
1
4
3
4
3
L
R
OUT4321
(S-VIDEO)
AUDIO
VIDEO VGA (VGA)
(S-VIDEO)
LR
PHANTOM
POWER
MIC IN
2
6
14
16
9
8
10 191 15 17
5
7
12
4
13
3
Figure 2-3 — Rear panel of MPS 112CS
1
AC power — Standard AC power connector for a power source of
100 – 240 VAC, operating at 50/60 Hz.
2
Video input group — Four female BNC connectors for composite video input
(numbered 1 to 4).
3
Video output — One female BNC connector for composite video output.
4
S-video input group — Four female 4-pin mini DIN connectors for S-video
input (numbered 1 to 4).
Installation, cont’d
MPS Series • Installation2-4
5
S-video output — One female 4-pin mini DIN for S-video output.
6
VGA input group — Four female 15-pin HD connectors for VGA input
(numbered 1 to 4).
7
VGA output — One female 15-pin HD connector for VGA output.
8
RS-232 remote — One female 9-pin D connector for a host computer or third
party controller using Extron’s Simple Instruction Set (SIS) or control software
for Windows.
9
(VGA) audio input group — Four 3.5 mm, female, stereo mini jacks for audio
input. See Audio input and output in this chapter.
To reduce crosstalk, it is recommended that you either terminate all the VGA
audio input jacks or avoid switching to a VGA audio input that has no device
connected to it.
10
(VGA) audio output — One 3.5 mm, female, stereo mini jack for audio output
from the VGA group input. See Audio input and output in this chapter.
11
Microphone input (MPS 112) — 6.3 mm mono microphone jack connection
for an external microphone.
12
Microphone input (MPS 112CS) — A 3-pole, 3.5 mm captive screw connector
socket for an external microphone.
13
Phantom Power LED (MPS 112CS) — A green LED that indicates (when lit)
that phantom power is on.
14
(S-video) audio input group — Eight female RCA connectors (four right and
four left) for audio input (numbered 1 to 4).
15
(S-video) audio output — Two female RCA connectors (one right and one left)
for audio output from the S-video group inputs. See Audio input and output in
this chapter.
16
(Composite Video) audio input group — Eight female RCA connectors (four
right and four left) for audio input (numbered 1 to 4).
17
(Composite Video) audio output — Two female RCA connectors (one right
and one left) for audio output from the Video group inputs. See Audio input
and output in this chapter.
18
Program Audio output (MPS 112) — Two female RCA (one right and one left)
for program audio output (unbalanced).
19
Program Audio output (MPS 112CS) — A 3.5 mm, 5-pole captive screw
connector socket for balanced or unbalanced program audio output.
Connecting the MPS Switcher
The MPS switcher can be connected to as many as 12 input devices simultaneously
and output to as many as three devices simultaneously, or one at a time. Follow the
steps below and see the installation example in figure 2-4.
1
Turn off power to the MPS switcher and all other devices that will be
connected.
2
If the MPS switcher is to be rack, table/wall, or through-desk mounted,
position the brackets and insert the mounting screws. See the Mounting the
Switcher, earlier in this chapter.
2-5MPS Series • Installation
3
Attach up to four VGA, four S-video, and four video (composite) input
devices to the MPS switcher.
4
Connect the switcher’s VGA, S-video and video (composite) outputs (up to
three, one of each video format) to a projector’s inputs.
5
For stereo audio input, connect up to 12 audio sources to the switcher’s audio
inputs of the VGA, S-video, or video (composite) groups (up to 4 for each
group). See the following Audio input and output section for connections.
6
For stereo output, connect an audio output device to each of the three groups
and one audio amplifier to the Program Audio connectors. Refer to Audio
input and output for wiring diagrams.
7
If the MPS switcher is to be connected to a computer or host controller for
remote control, connect the host’s RS-232 cable to the 9-pin female RS-232
connector of the MPS unit. For an RS-232 pinout table, see Remote connection
later in this chapter.
8
Power up the input and output devices, then connect power to the rear AC
connector of the MPS switcher.
5
0
/
6
0
H
z
1
0
0
-
2
4
0
V
0
.
5
A
M
A
X
(V
ID
EO
)
M
P
S
1
1
2
P
R
O
G
O
U
T
O
U
T
4
3
2
1
O
U
T
O
U
T
O
U
T
O
U
T
R
S
-2
3
2
4
3
2
2
1
1
2
1
4
3
4
3
L
R
O
U
T
4
3
2
1
(S-V
IDE
O)
AUD
IO
VIDEO
VG
A
(VG
A
)
M
IC IN
S-V
ID
EO
Amplifier
Projector
VCR (4)DVD (4)
Microphone
PC (2)
Laptop (2)
Speakers
Extron
MPS 112
Media Presentation
Switcher
Figure 2-4 — MPS 112 installation example
Installation, cont’d
MPS Series • Installation2-6
Audio input and output
Connecting the RCA audio connectors
1. Use pre-made RCA audio cables,
or
cut bulk audio cable, terminate the RCA plugs on the cable as shown in
figure 2-5.
2. Plug RCA connectors into the MPS switcher.
Tip (+)
Sleeve ( )
Sleeve (Gnd )
Right Channel
(Red Jacket)
Left Channel
(White Jacket)
Tip (Signal)
Figure 2-5 — RCA audio connector
Connecting the 3.5 mm mini-plugs
1. Use pre-made Extron 3.5 mm audio cables,
or
cut bulk audio cable, solder the 3.5 mm mini-plug to the cable.
2. Plug the 3.5 mm mini-plug connectors into the MPS 112.
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm Stereo Plug Connector
(unbalanced)
Figure 2-6 — 3.5 mm, mini-plug audio connector
Microphone input
Connecting the 1/4" (6.3 mm) microphone connector (MPS 112)
1. Use a pre-made 1/4" microphone cable,
or
cut bulk microphone cable, solder the 1/4" microphone connector to the
cable.
2. Plug the 1/4" microphone connector into the MPS 112.
Tip (+)
Sleeve ( )
Figure 2-7 — 1/4" microphone connector
2-7MPS Series • Installation
Connecting the 3-pole captive screw microphone connector (MPS 112CS)
1. Use a pre-made 3-pole captive screw microphone cable,
or
cut bulk microphone cable, and attach the 3-pole captive screw connector
to the cable.
2. Plug the 3-pole captive screw connector into the MPS 112CS.
Balanced Mic InputUnbalanced Mic Input
Tip
Ring
Sleeve
Tip
Sleeve
Figure 2-8— 3.5 mm, 3-pole captive screw microphone connector
Program audio output (MPS 112CS)
Balanced or unbalanced program audio output is available on the MPS 112CS using
a 3.5 mm, 5-pole captive screw connector. Refer to the following illustration for
proper wiring.
CAUTION
Connect the sleeve to ground (Gnd). Connecting the sleeve to a
negative (-) terminal will damage the audio output circuits.
Unbalanced Output
Tip
See caution
Sleeve
Tip
See caution
Balanced Output
Tip
Ring
Sleeve (s)
Tip
Ring
Figure 2-9 — 3.5 mm, 5-pole captive screw audio connectors
Installation, cont’d
MPS Series • Installation2-8
DB9 Pin Locations
Female
51
96
Remote connection
The cable used to connect the RS-232/Remote port to a computer or control
system may need to be modified by removing pins or cutting wires. If
unneeded pins are connected, the switcher may hang up.
For RS-232 control, use a control cable with only pins 2, 3, and 5 connected.
Otherwise, either cut the wires to the other pins in hard-shelled connectors or
remove the unneeded pins from molded plugs. See chapter 5, Programmer’s Guide,
for definitions of the SIS commands and details on how to install and use the
control software.
The RS-232 connector is a 9-pin D female with the following pin designations:
Pin RS-232 function Description
1 – No connection
2 Tx Transmit data
3 Rx Receive data
4 – No connection
5 Gnd Signal ground
6, 7 – No connection
8, 9 – No connection
The protocol is as follows:
• 9600 baud
• 8-bit data
• 1 stop bit
• no parity
• no flow control.
MPS 112 Series • Operation3-2
Operation
PRELIMINARY
Front Panel Features
Figure 3-1 — Front panel details of the MPS switcher (MPS 112 shown)
1
Executive Mode indicator LED — This red LED lights when Executive mode
is turned on.
Video/audio group buttons
The controls for the three independent switchers are grouped by input type.
2
VGA/Audio group — Buttons 1 through 4 select the input for the VGA/audio
switcher sections of the MPS unit. The LEDs adjacent to each button (when
lit) indicate which input has been selected for output.
3
S-video/Audio group — Buttons 1 through 4 select the input for the S-video/
audio switcher sections of the MPS unit. The LEDs adjacent to each button
(when lit) indicate which input has been selected for output.
4
Video/Audio group — Buttons 1 through 4 select the input for the composite
video/audio switcher sections of the MPS unit. The LEDs adjacent to each
button (when lit) indicate which input has been selected for output.
Microphone and Program Audio controls
5
Mic Mix button — This button turns on the microphone mixer to provide
microphone talk-over for the program audio. The LED (when lit) indicates
that the microphone mixer is turned on.
6
Mic Volume — This adjustment knob controls the volume of the microphone.
7
Program Audio Volume — This adjustment knob controls the volume of the
program audio output.
8
Program Audio Mute — This button mutes the program audio output. The
LED (when lit) indicates that the program audio output is muted.
Secondary button functions:
9
Mic Power On/Off — This is the secondary function of this button. Press and
release this button while pressing and holding the Mode button (
14
) for more
than 2 seconds to toggle the microphone power (MPS 112 – 15 V,
MPS 112CS – 48 V) on or off. The associated LED indicates if the mic power is
on (when lit) or off. When the Mode button is released, the LED resumes
input indication.
10
Mic Volume Reset — This is the secondary function of this button. Press and
release this button while pressing and holding the Mode button (
14
) to reset
the mic volume to a preset level. See Front Panel Operation in this chapter for
details. When the Mode button is released, the LED resumes input indication.
11
Program Volume Reset — This is the secondary function of this button. Press
and release this button while pressing and holding the Mode button (
14
) to
reset the Program Audio volume to a preset level. See Front Panel Operation in
this chapter for details. When the Mode button is released, the LED resumes
input indication.
MPS SERIES
MICPROGRAM AUDIOVIDEO / AUDIOS-VIDEO / AUDIOVGA / AUDIO
VOLUME
VOLUME
MUTE
432143214321
MIC POWER ON/OFFMIC VOL RESET PROG VOL RESET SEPARATESINGLEMODE
EXEC.MODE
MIX
MEDIA PRESENTATION SWITCHER
21 3 4
6
8
5
7
9
10
11
12
13
14
3-3MPS 112 Series • Operation
PRELIMINARY
Switcher Mode controls
12
Separate Switcher mode — This is the secondary function of this button.
Press and release this button while pressing and holding the Mode button (
14
)
to select the Separate Switcher mode. The associated LED indicates if the
Separate Switcher mode is on (when lit) or off. When the Mode button is
released, the LED resumes input indication.
13
Single Switcher mode — This is the secondary function of this button. Press
and release this button while pressing and holding the Mode button (
14
) to
select the Single Switcher mode. The associated LED indicates if the Single
Switcher mode is on (when lit) or off. When the Mode button is released, the
LED resumes input indication.
14
Mode — Press and hold this button for more than 2 seconds to view the
switcher status. It also allows mode and setting changes when used in
combination with other buttons, as previously indicated.
Front Panel Operation
Figure 3-2 — MPS switcher front panel
The functions of the front panel controls are described in the following sections.
Input selection in Single Switcher mode
In Single Switcher mode the switcher emulates one switcher with 12 inputs. In this
mode, when one of the inputs is selected, the input is routed to the outputs (video
and audio) for that group and the audio is sent to the program audio output as well.
All of the other outputs are muted.
When you select and press an input button in Single Switcher mode, the green LED
indicator to the right of the button lights steadily. All of the other LEDs will be off.
To select a different input, press a different input button.
The Extron IR 102 Universal Handheld Remote Control can be used with an
MPS 112 switcher only when the switcher is in Single Switcher mode.
Input selection in Separate Switcher mode
There are three input selection groups on the front panel: VGA/Audio, S-video/
Audio, and Video/Audio. These groups correspond to the three independent A/V
switchers (in Separate Switcher mode) available in the MPS 112.
Each of the input selection groups has four numbered input selection buttons
(1 – 4), which allow you to choose from among the four separate input sources in
that group that the switcher can output.
All outputs of the three groups are active, but the audio from only one group is
routed to the program audio output. That group (input) is indicated by a flashing
LED, while the other two groups are indicated by solid LEDs. See the Program
Audio section for more details.
MPS SERIES
MICPROGRAM AUDIOVIDEO / AUDIOS-VIDEO / AUDIOVGA / AUDIO
VOLUME
VOLUME
MUTE
432143214321
MIC POWER ON/OFFMIC VOL RESET PROG VOL RESET SEPARATESINGLEMODE
EXEC.MODE
MIX
MEDIA PRESENTATION SWITCHER
Operation, cont’d
MPS 112 Series • Operation3-4
PRELIMINARY
View mode
To view the switcher’s current mode and microphone power settings, press and
hold the Mode button for more than 2 seconds. The LEDs on the front panel change
from input indication to setting indication.
To change a setting, continue to hold the Mode button and press the button that
corresponds to the setting you want to change. Figure 3-3 shows the front panel
buttons and LEDs that are active during View mode. Release the Mode button and
the front panel LEDs resume input indication.
Changes to the Single Switcher mode and Separate Switcher mode do not take
effect until the Mode button is released.
VGA / AUDIO
14321
SEPARATESINGLEMODE
EXEC.MODE
Press the VGA/Audio input 4 button
to toggle Executive mode (front
panel lockout) on and off. The LED
lights when the mode is on.
PROGRAM AUDIOVIDEO / AUDIO
VOLUME
MUTE
432
MIC POWER ON/OFFMIC VOL RESET PROG VOL RESET
Press the Mic Power On/Off
button to toggle the microphone
power on and off. The LED lights
when microphone power is on.
VGA / AUDIO
14321
SEPARATESINGLEMODE
EXEC.MODE
Press the Separate button to select
Separate Switcher mode.
NOTE The mode will not change until
the Mode button is released.
VGA / AUDIO
14321
SEPARATESINGLEMODE
EXEC.MODE
Press the Single button to select
Single Switcher mode.
NOTE The mode will not change until
the Mode button is released.
VGA / AUDIO
14321
SEPARATESINGLEMODE
EXEC.MODE
Press and hold the
Mode button for more
than 2 seconds to
enter View mode.
Figure 3-3 — Front panel button/LED functions during View mode
Determining and selecting the switcher mode
The current switcher mode is indicated by the input LEDs. If the unit is in Separate
Switcher mode, there will be one LED in each input group lit (for a total of three
LEDs). In Single Switcher mode, only one LED will be lit and the other 11 input
LEDs will be off.
To change modes, press and hold the Mode button for more than 2 seconds, then
press either the Single (to enter the Single Switcher mode) or Separate (to enter the
Separate Switcher mode). Release the Mode button when your selection has been
made.
S-VIDEO
2
VGA / AUDIO
14321
SEPARATESINGLEMODE
EXEC.MODE
Press the S-video/Audio input 1
button to toggle Follow sub-mode
on and off. The LED lights when
the mode is on. See pg. 3-5.
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