Extron electronic TPX 88, TPX 88 A User Manual

TPX 88 and TPX 88 A

Twisted Pair Matrix Switcher

Twisted Pair Matrix Switcher with Local Audio Outputs

68-733-01 Rev. C

12 05

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 afi n 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 fi xation • Ne pas utiliser de pièces de fi xation ni d’outils non recommandés par le

fabricant du matériel car cela risquerait de poser certains dangers.

Sicherheitsanleitungen • Deutsch

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

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

Achtung

Lesen der Anleitungen • Bevor Sie das Gerät zum ersten Mal verwenden, sollten Sie alle Sicherheits-und

Bedienungsanleitungen genau durchlesen und verstehen.

Aufbewahren der Anleitungen • Die Hinweise zur elektrischen Sicherheit des Produktes sollten Sie

aufbewahren, damit Sie im Bedarfsfall darauf zurückgreifen können.

Befolgen der Warnhinweise • Befolgen Sie alle Warnhinweise und Anleitungen auf dem Gerät oder in der

Benutzerdokumentation.

Keine Zusatzgeräte • Verwenden Sie keine Werkzeuge oder Zusatzgeräte, die nicht ausdrücklich vom

Hersteller empfohlen wurden, da diese eine Gefahrenquelle darstellen können.

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 qualifi ed 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 fi l 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

qualifi é. Aucun des éléments internes ne peut être réparé par l’utilisateur. Afi n 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 orifi ces • Si le boîtier de l’appareil comporte des fentes ou des orifi ces, 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 qualifi ziertem 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 empfi ndlichen 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 especifi camente recomendados

por el fabricante, ya que podrian implicar riesgos.

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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 califi cado. 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 orifi cios 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.

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Quick Start — TPX Matrix Switchers

RS-232

Switches 1 & 2 down,
3 up for RS-422.

All switches up
for RS-232. (Default.)

RS-422

Installation

Step 1 — Turn off power
Step 2

Cable the switcher for twisted pair input and
output. See Termination of TP cable in chapter 2,
Installation, to properly terminate the RJ-45
connectors.

Clip Down

Side

RJ-45

connector

Twisted

Pairs

1&2

12345678

1

2345678

3&6 4&5

Step 3

TPX 88 A: Cable the switcher for stereo audio
output.

Tip

See caution

Sleeve

Tip

See caution

Unbalanced Output

Tip

Ring

Sleeve (s)

Tip

Ring

Balanced Output

TP/VTT transmitters and receivers

568 A

Pin color

White-

1

green

2 Green

White-

3*

orange

4 Blue Blue Green+ N/C

White-

5

blue

6* Orange Green Audio-

White-

7

brown

8Brown

* The TPX 88 A switches pair 3 and 6.
The TPX 88 does not switch pair 3 and 6.
Audio or serial data from an RGB video MTP

is incompatible with both TPX models.
They cannot be switched.

7&8

If you are using Enhanced Skew-Free™ A/V cable,

NOTE

use the TIA/EIA T 568A standard only.

MTP transmitters and receivers

568 A 568 B
Color

Pin

1

White­green

2 Video –

Green

White-

3*

orange

4

Blue
White-

5

blue

6*

Orange

White-

7

brown

8

Brown

Color

White­orange

Orange

White­green

Blue
White-

blue

Green

White­brown

Brown

Video

MTP

Video +

NONE

Audio
left +

Audio
left –

NONE

Audio
right +

Audio
right –

CAUTION

568 B
color

White­orange

Orange

White­green

White­blue

White­brown

Brown

S-video

Luma (Y) +

Luma (Y) –

NONE

Chroma (C)
& audio left +

Chroma (C)
& audio left –

NONE

A

udio right+

Audio right –

Connect the

RGBHV/

Red/
V. sync+

Red/
V. sync-

Audio+

Green- N/C

Blue/
H. sync+

Blue/
H. sync-

MTP

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

audio

Video/

audio

Video+

Video-

N/C

N/C
Audio+

Audio-

RGB video

MTP

Red/
V. Sync +

Red/
V. Sync –

Mono audio +
or RS-232 +

(MTP 15HD
only)

Green +

Green –
Mono audio –

or RS-232 –

(MTP 15HD
only)

Blue/
H. Sync +

Blue
H. Sync –

Step 4

If desired, connect a control system or computer
to the Remote (RS-232/RS-422) port.

TX-

RX -

TX +

Gnd

TX-

TX+

RX-

RX+

RS-232 FunctionPin

Gnd

—

TX+

—

RX+

GND

Signal ground
Not used
Transmit data
Not used
Receive data

RX +

RS-422 Function

Signal ground

Gnd

Transmit data (-)

TX-

Transmit data (+)

TX+

Receive data (-)

RX-

Receive data (+)

RX+

Step 5

Set the rear panel Remote DIP switches.

Step 6

Plug the switcher and input and output devices
into a grounded AC source, and turn on the input
and output devices.

Definitions

Tie — An input-to-output connection.
Set of ties — An input tied to 2 or more outputs.
Configuration — One or more ties or sets of ties.
Current configuration — The currently active

configuration (also called configuration 0).

Global preset — A configuration that has been

stored. One preset can be assigned to each
input button. When a preset is retrieved from
memory, it becomes the current configuration.

Front Panel Controls

Input and output buttons and LEDs select and

identify inputs and outputs. Input buttons
also select presets. On the TPX 88 A, the
input and output LEDs also display the audio
levels.

Enter button saves changes when you change the

configuration.

Preset button saves a configuration as a preset or

recalls a previously-defined preset.

QS-1TPX 88 Matrix Switcher Quick Start

Quick Start — TPX 88 Matrix Switchers, cont’d

View button selects a view-only mode that prevents inadvertent configuration changes.
Esc button cancels selections in progress and resets the front panel LEDs. The Esc button does not

reset the current configuration, the Video and Audio LEDs, any presets, or any audio gain/
attenuation settings.

(TPX 88 A only) I/O button selects/deselects video and/or audio. The I/O button also selects the

audio level adjust mode.

(TPX 88 A only) Video and audio LEDs indicate that video and/or audio is selected for configuration.
(TPX 88 A only) Mute All button mutes and unmutes all audio outputs.
(TPX 88 A only) Volume knob adjusts the input level or output volume in audio level adjust mode.

Create a tie

1. Press and release the I/O button to select

audio and/or video.

I/O

Lights green when video is selected.

VIDEO
AUDIO

Lights red when audio is selected.

Press the button to cycle
through the selections.

2. Press and release the desired input button.

Amber indicates video and audio (audio follow).
Green indicates video only (audio breakaway).
Red indicates audio only (audio breakaway)

5

3. Press and release the desired output button(s).

Amber indicates video and audio tie.
Green indicates video tie.
Red indicates audio tie.

3 4 8

4. Press and release the Enter button.

View ties

1. Press and release the View button.

2. Press and release the desired input.

Press and release an input button.
The button lights.

I
N
P
U

1 2

T
O

U
T
P

1 2

U
T

The buttons for all tied outputs light.
The buttons for all untied outputs are unlit.

3. Press and release the View button to exit view

mode.

Save or recall a preset

1. Save a preset — Press and hold the Preset

button for 2 seconds.
Recall a preset — Press and release the Preset

button.

Save a
preset

Recall a

preset

2 seconds

Preset LED blinks.Press and hold.

Preset LED lights.Press and release.

PRESETPRESET

PRESETPRESET

2. Press and release the desired input or output

button.

Press the button to
select view mode.

The View LED lights when view mode is selected.

VIEW

The buttons for all untied outputs light until you select an input.

I
N
P
U

1 2

T
O

U
T
P

1 2

U
T

TPX 88 Matrix Switchers Quick StartQS-2

Press and release the input 1 button to select preset 1.
The button blinks.

I
N
P
U
T

O
U
T
P
U
T

Preset 9 Preset 10 Preset 11

Preset 2 Preset 3

1 2
1 2

The Enter button
blinks to indicate
the need to save or
recall the preset.

3. Press and release the Enter button.

ENTER

Table of Contents

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

About the TPX 88 Manual...............................................................................................1-2

About the TP A/V System ................................................................................................ 1-2

TP cable advantages ..........................................................................................................1-2

T ransmission distances.......................................................................................................1-5

About Both TPX Switcher models .............................................................................. 1-6

About the TPX 88 A Switchers ..................................................................................... 1-7

Features ................................................................................................................................... 1-8

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

Mounting the Switcher.................................................................................................... 2-2

Cabling and Rear Panel Views...................................................................................... 2-3

T ermination of TP cable..................................................................................................... 2-4

Cable testing ................................................................................................................2-5

Equalizing pair skew with Skew Equalizers .................................................................. 2-6

Equalizing pair skew with skew compensation cables..................................................2-6

Audio outputs connectors (TPX 88 A only) ......................................................................2-7

Remote port configuration ...............................................................................................2-8

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

Front Panel Controls and Indicators .........................................................................3-2

Definitions..........................................................................................................................3-2

Input and output buttons .................................................................................................3-2

Control buttons..................................................................................................................3-3

I/O controls (TPX 88 A only) .............................................................................................. 3-4

Audio controls (TPX 88 A only) .........................................................................................3-4

Button icons .......................................................................................................................3-5

Operations..............................................................................................................................3-5

Power ................................................................................................................................. 3-5

I/O grouping.......................................................................................................................3-6

Creating a configuration...................................................................................................3-7

Example 1: Creating a set of video and audio ties........................................................ 3-8

Example 2: Adding a tie to a set of video and audio ties .............................................3-9

Example 3a: Removing an audio tie from a set of ties (TPX 88 A only) ......................3-10

Example 3b: Removing a tie from a set of ties (TPX 88 only)...................................... 3-12

Viewing a configuration ................................................................................................. 3-13

Example 4a: Viewing ties (TPX 88 A only)................................................................... 3-13

Example 4b: Viewing ties (TPX 88 only) ......................................................................3-16

Using presets .................................................................................................................... 3-17

Example 5: Saving a preset .........................................................................................3-17

Example 6: Recalling a preset .....................................................................................3-18

TPX 88 Matrix Switchers • Table of Contents

i

Table of Contents, cont’d

Viewing and adjusting the input audio level (TPX 88 A only) ......................................3-20

Example 7: Viewing and adjusting an input audio level.............................................3-20

Viewing and adjusting the output volume (TPX 88 A only)..........................................3-22

Example 8: Viewing and adjusting an output volume level .......................................3-23

Muting and unmuting the local audio (TPX 88 A only) ................................................ 3-25

Front panel security lockout (executive mode)..............................................................3-25

System reset to factory defaults ..................................................................................... 3-26

Background illumination................................................................................................. 3-26

Troubleshooting ................................................................................................................3-27

Worksheets .......................................................................................................................... 3-27

Worksheet example 1: System equipment ....................................................................3-27

Worksheet example 2: Daily configuration...................................................................3-28

Worksheet example 3: Test configuration.....................................................................3-29

Configuration worksheet ................................................................................................ 3-31

Chapter 4 • Programmer’s Guide..................................................................................... 4-1

Host-to-Switcher Instructions.......................................................................................4-2

Switcher-Initiated Messages .........................................................................................4-2

Switcher Error Responses............................................................................................... 4-3

Using the Command/Response Table ........................................................................4-4

Symbol definitions ............................................................................................................. 4-4

Command/Response Table for SIS Commands .....................................................4-5

Chapter 5 • Matrix Software ..............................................................................................5-1

Matrix Switchers Control Program ............................................................................ 5-2

Installing the software ...................................................................................................... 5-2

Using the software ............................................................................................................ 5-2

Firmware upgrade .............................................................................................................5-4

Windows buttons, drop boxes, and trash ........................................................................5-5

Windows menus.................................................................................................................5-5

File menu......................................................................................................................5-5

Tools menu ...................................................................................................................5-5

Preferences menu ......................................................................................................... 5-6

Using emulation mode ......................................................................................................5-7

Using the help system........................................................................................................ 5-7

Button Label Generator...................................................................................................5-8

Using the software ............................................................................................................ 5-8

ii TPX 88 Matrix Switchers • Table of Contents

Appendix A • Reference Information.......................................................................... A-1

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

Part Numbers ....................................................................................................................... A-4

T wisted Pair Matrix Switcher part numbers .................................................................... A-4

Optional accessories ......................................................................................................... A-4

Cables ................................................................................................................................ A-4

Button Labels....................................................................................................................... A-6

Installing labels in the matrix switcher’s buttons............................................................ A-6

Button label blanks........................................................................................................... A-7

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

68-733-01 Rev. C

12 05

iiiTPX 88 Matrix Switchers • Table of Contents

Table of Contents, cont’d

iv TPX 88 Matrix Switchers • Table of Contents

TPX 88 Twisted Pair Matrix Switchers

Chapter One

1

Introduction

About the TPX 88 Manual

About the TP A/V System

About Both TPX Switcher Models

About the TPX 88 A Switchers

Features

Introduction, cont’d

Introduction

About the TPX 88 Manual

This manual provides installation, operation, and maintenance information for the
Extron TPX 88 and TPX 88 A matrix switchers. The TPX switchers are 8-input by
8-output matrix switchers for routing the signals that Extron twisted pair (TP)
transmitters and receivers use to distribute video and audio signals in an A/V
system.

In this manual, the term “TPX 88” is generally used to identify both twisted pair
matrix switchers. If a specific discussion relates to the audio version only, the term
“TPX 88 A” is used.

In this manual, the terms “twisted pair transmitter” and “twisted pair receiver”
refer to any transmitter or receiver listed in the table on the following pages; the
terms “TP transmitter” and “TP receiver” refer specifically to members of the TP
family of Extron twisted pair transmitters and receivers, such as the TP T 15HD A
and the TP R BNC A.

Besides the TPX 88’s video signal routing capabilities, the TPX 88 A can route the
TP transmitter family’s digital audio outputs, switching the audio with the video
(audio follow) or separate from the video (audio breakaway). The TPX 88 A can
also process the audio, adjusting the gain and attenuation, and output the audio
locally on the switcher’s rear panel.

About the TP A/V System

The Extron twisted pair transmitters, twisted pair receivers, and TP matrix
switchers provide a system for long-distance distribution of video and stereo or
mono audio over Extron’s Enhanced Skew-Free™ A/V unshielded twisted pair
(UTP) cable or over Category (CAT) 5 UTP, shielded twisted pair (STP), or foil
shielded twisted pair (FTP) cable. The table on the following page lists the Extron
transmitters and receivers that are compatible with the TPX units and their video
and audio capabilities. With adapters, many RGBHV twisted pair products can
also distribute component, S-video and/or composite video.

TP cable advantages

Extron’s Enhanced Skew-Free A/V UTP cable and CAT 5 cable are a fraction of the
size of coaxial cable, as well as being much lighter, more flexible, and far less
expensive. These TP products make cable runs simpler and less cumbersome.
Termination of the cable with RJ-45 connectors is simple, quick, and economical.

TPX 88 Matrix Switchers • Introduction1-2

Extron twisted pair products’ attributes

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1-3TPX 88 Matrix Switchers • Introduction

Introduction, cont’d

Extron twisted pair products’ attributes (continued)

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TPX 88 Matrix Switchers • Introduction1-4

Transmission distances

The minimum reliable transmission distance between transmitters and receivers is
50 feet for most models. The maximum distance is determined by the output
frequency, resolution, and the transmitter/receiver family. The table below lists the
recommended maximum transmission distances for most transmitter/receiver
families using Extron Enhanced Skew-Free A/V UTP cable, terminated with CAT 5
rated connectors.

Refer to each product’s user manual to determine the ranges for that family of
products.

Recommended transmission ranges at 60 Hz

Video format Maximum ranges

Composite video, S-video, and
component video and audio 800" (245 m) – 1000" (300 m)
640 x 480 500" (150 m) – 1000" (300 m)
800 x 600 400" (120 m) – 800" (245 m)
1024 x 768 300" (90 m) – 600" (185 m)
1280 x 1024 200" (60 m) – 450" (135 m)
1600 x 1280 150" (45 m) – 450" (135 m)

It is possible to exceed the recommended distances, however, image quality may
be reduced.

Extron recommends using the highest quality cable available and affordable,
with less than 8 nanoseconds/100 meters of skew (see Termination of TP
cable in chapter 2). We also recommend the use of pre-terminated and tested
cables. Cables terminated on site should be tested before use to ensure that
they comply with Category 5 specifications.

Extron Skew-Free A/V UTP cable is recommended for most applications.
CAT 5 cable can be satisfactorily used for some products (refer to each
product’s user manual). The system can be used with cable other than that
recommended, but video performance will be compromised and maximum
cable lengths and video resolutions must be decreased.

1-5TPX 88 Matrix Switchers • Introduction

Introduction, cont’d

About Both TPX Switcher Models

The TPX switchers are single box solutions to simple twisted pair routing
applications (figure 1-1). Each input and output is individually isolated and
buffered, and any input(s) can be switched to any one or all outputs with virtually
no crosstalk or signal noise between channels.

MAC

Extron
TP T 15HD A

Twisted Pair
Transmitter

Extron
TP T 15HD A

Twisted Pair
Transmitter

Audio

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Twisted Pair Transmitter

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Twisted Pair
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Document Camera
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Figure 1-1 — Typical TPX 88 A matrix switcher application

The TPX 88 switchers support I/O grouping, a feature that lets you virtually divide
the matrix into up to four smaller sub-switchers, making installation and control
easier. I/O grouping allows you to separate different signal types to avoid
connecting signal types from different, incompatible, transmitter/receiver families.

The TPX matrix switchers are housed in rack-mountable, 1U high, 17" wide metal
enclosures. The appropriate rack mounting kit is included with each switcher,
allowing you to mount the switcher in a standard 19" rack. Each model has an
internal 100 VAC to 240 VAC, 50/60 Hz, 25 watts, auto-switchable, power supply
that provides worldwide power compatibility.

Many twisted pair transmitters and receivers have the ability for one
component of the pair to provide power for the other (such as a TP R BNC A
providing the power for a TPT BNC).

The TPX 88 cannot power connected twisted pair transmitters and receivers.
The TPX 88 cannot switch the power that a twisted pair transmitter or
receiver supplies to a twisted pair receiver or transmitter.

In a twisted pair system that includes a TPX 88, both the twisted pair
transmitter and the twisted pair receiver must be powered locally. The
appropriate power supply is included with the transmitters and receivers.

TPX 88 Matrix Switchers • Introduction1-6

The TPX switcher can be remotely controlled via its Remote (RS-232/RS-422) port.
The switchers are programmed with Extron’s Simple Instruction Set
of basic ASCII code commands that provide simple control through a third party
control system or PC without programming long, obscure strings of code.

The Remote port can be connected to a control system, a PC, or an Extron
MCP 1000 remote control panel and/or MKP 1000 remote keypad, MKP 2000
remote control panel, or MKP 3000 remote control panel.

About the TPX 88 A Switchers

Local audio outputs have volume and mute controls. The switcher’s local audio
outputs are on 5-pole, 3.5 mm captive screw connectors. These local outputs follow
the RJ-45 outputs. For example, if audio input 6 is tied to audio output 1, then the
TPX’s local audio output 1 is the input 6 audio. This is true regardless of whether
the audio follows the video or is broken away from the video in the routing of
signals between twisted pair transmitters and receivers.

The TP transmitters and receivers distribute audio in a proprietary digital
channel of the TP link.

The TPX 88 cannot switch this audio.
The TPX 88 A can switch this audio and extract it for the local connectors.
The audio distributed by certain VersaTools® MTP transmitter/receiver pairs is

incompatible with the audio extraction and processing capabilities of the
TPX 88 A.

The TPX 88 and the TPX 88 A cannot switch the audio that is distributed by
MTP RGB transmitters and receivers.

The TPX 88 can switch the audio that is distributed by MTP S-video and
composite video transmitters and receivers.

The TPX 88 A can switch the audio that is distributed by MTP S-video and
composite video transmitters and receivers but cannot extract it for the
local connectors.

On the TPX 88 A, the switching of the audio portion of the TP link can either be
linked with the video portion (audio follow) or independent of the video portion
(audio breakaway).

™

(SIS™), a set

1-7TPX 88 Matrix Switchers • Introduction

Introduction, cont’d

Features

Inputs — These switchers accept 8 sets of TP signals that are input from Extron

twisted pair transmitters on TP cable terminated with RJ-45 connectors. Each
transmitter creates the proprietary signal from its RGBHV, RGBS, RGsB,
RsGsBs, HDTV, component video, S-video, or composite video input. Most
transmitters also include either digital or differential analog audio on the
proprietary signal.

TP outputs — These switchers output 8 sets of TP signals for use by Extron twisted

pair receivers.
TPX 88 — The output proprietary signal includes the encoded video

(RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or
composite video), but not the audio output by most TP transmitters.
However, if the input TP link originated from an MTP transmitter with audio,
the output proprietary signal also includes the audio portion of the link.

TPX 88 A — The output proprietary signal includes the encoded video
(RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or
composite video) and audio.

Audio outputs (TPX 88 A only) — If the input TP link originated from a member of

the TP family of transmitters (see the table on page 1-3 and page 1-4), the
TPX 88 A outputs 8 stereo audio outputs, balanced or unbalanced, on 3.5 mm,
5-pole captive screw terminals.

Audio gain and attenuation (TPX 88 A only) — Users can set the input level of

audio gain or attenuation (-18 dB to +24 dB) for the signal that is output
locally. Gain and attenuation can be set via the RS-232/RS-422 link or from
the front panel. Individual input audio levels can be adjusted so there are no
noticeable volume differences between sources (figure 1-2).

dBvdBu

+8

+10

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+7

+2

+4

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+1

-3

-2

-7

-5

-10

-8

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Output Level

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+10

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+4

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+1

-3

-2

-7

-5

-10

-8

-14

-12

High Audio

Output Level

AUDIO

AUDIO

ID PIN 4 ID PIN 11

INPUT LOCAL MONITOR

ID PIN 4 ID PIN 11

INPUT LOCAL MONITOR

TP T 15HD A

TP T 15HD A

Consumer VCR

PC

BUFFEREDCOMPUTER

H-SHIFT

Audio
Inputs

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P
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1 2 3 4 5 6 7 8

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I/O

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ENTER

TPX88 A Twisted Pair Metrix Switcher

PC

BUFFEREDCOMPUTER

H-SHIFT

TP T 15HD A

TP T 15HD A

Audio
Inputs

dBvdBu

+8

+10

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+7

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-10

-8

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-12

Output

VOLUME

+dB

-dB

TWISTED PAIR SWITCHER

Level

TPX 88 A

I/O AUDIO

SW SERIES

VIDEO / AUDIO SWITCHER

VIDEO
AUDIO

AUDIO

VIEW

10

11

12

MUTE ALL

CONF/SAVE

ESC

No noticeable volume

differences between sources

Audio System

Pro CD Player

Figure 1-2 — Audio gain and attenuation

TPX 88 Matrix Switchers • Introduction1-8

Audio output volume (TPX 88 A only) — The audio level of each local output can

be adjusted through a range of 100% (no attenuation) to 0% (full attenuation).
The audio level can be adjusted under front panel or RS-232/RS-422 control.

Switching flexibility — Provides individually buffered, independent matrix

switched outputs with audio follow and audio breakaway for the TPX 88 A.

• Any input to any or all outputs

• Quick multiple tie — Multiple inputs can be switched to multiple outputs

simultaneously. This allows all displays (outputs) to change from source to
source at the same time.

• Audio follow (TPX 88 A) — The audio portion of the TP link input can be

switched with the corresponding video portion of the input TP link. This
feature allows any audio signal to be selected with any video signal
simultaneously to one or all outputs in any combination. Audio follow
switching can be done via front panel control or under RS-232/RS-422 remote
control.

• Audio breakaway (TPX 88 A) — The audio portion of the TP link input can

be broken away from its corresponding video portion of the input TP link.
Audio breakaway switching can be done via front panel control or under
RS-232/RS-422 remote control.

Audio from a transmitter in the MTP family cannot be broken away.

Operational flexibility — Operations such as input/output selection, setting of

presets, and adjustment of audio output levels (TPX 88 A only) can be
performed on the front panel or over the RS-232/RS-422 link. The
RS-232/RS-422 link allows remote control via a PC or control system.

• Front Panel Controller — The TPX front panel controller feature supports

touch-of-a-button input and output selection, preset creation and selection,
and (TPX 88 A only) audio output volume control. The front panel features
large, positive touch, illuminated input and output pushbuttons that can be
labeled with text or graphics.

• Windows-based control program — For RS-232/RS-422 remote control from

a PC, Extron includes its Windows-based control software with every matrix
switcher. The control program provides a versatile range of operational
options with its graphical interface and drag-and-drop/point-and-click
operation. The Windows-based control program also has an emulation mode
that lets you create a switcher configuration file at the home office and then
download it for use by the switcher on site.

™

• Simple Instruction Set (SIS

) — The remote control protocol uses Extron’s

SIS for easy programming and operation.

• Remote control — The matrix switchers are remote controllable, using the

MCP 1000 master control panel and any combination of MCP 1000 slave
control panels and/or MKP 1000 slave control keypads. The remote control
devices are easy to use and provide tactile buttons for quick selection. Each
MCP 1000 can be used for one-touch switching for a particular output and
selecting global presets. Each MKP 1000 dedicated to an output can be used
to select a different input for that output or to select a preset.

Labeling — Extron’s label software ships with every Extron matrix switcher. You

can create labels to place in the front panel I/O buttons, with names,
alphanumeric characters, or color bitmaps for easy and intuitive input and
output selection. Alternatively, labels can be made with any Brother P-Touch
or comparable labeler.

1-9TPX 88 Matrix Switchers • Introduction

Introduction, cont’d

Global memory presets — 16 global memory presets are a time-saving feature that

lets you set up and store input/output configurations in advance and then
recall those configurations when needed with a few simple steps.

I/O grouping — Allows the matrix to be virtually divided into up to four smaller

sub-switchers, making installation and control easier. I/O grouping allows
specific outputs, such as those for a specific family of twisted pair receivers,
with a specific signal format, to be grouped together. Switching between I/O
groups is not possible from the front panel.

Rack mount — Rack mountable in any conventional 19" wide rack.
Front panel security lockout (executive mode) — If a TPX switcher is installed in

an open area, where operation by unauthorized personnel may be a problem,
a security lock-out feature can be implemented. When the front panel is
locked, a special button combination is required to unlock the front panel
controller before it can be operated.

Power supply — Includes an internal 100 VAC to 240 VAC, 50/60 Hz, 25 watts

auto-switchable power supply, which provides worldwide power
compatibility.

TPX 88 Matrix Switchers • Introduction1-10

TPX 88 Twisted Pair Matrix Switchers

Chapter Two

2

Installation

Mounting the Switcher

Cabling and Rear Panel Views

Installation, cont’d

Installation

Mounting the Switcher

The TPX switchers are housed in rack-mountable, 1U high, 17" wide metal
enclosures. The appropriate rack mount kit is included with the switchers,
allowing you to mount the switcher in a standard 19" rack. Rack mount the
switcher as follows:

1. If rubber feet were installed on the bottom of the switcher, remove them.

2. Attach the rack mount brackets to the switcher with eight #8 machine screws,

provided (figure 2-1).

IO

D

U

A

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M

U

R

L

E

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H

V

C

IT

TPX 88 A

W

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Figure 2-1 — Rack mounting a TPX switcher

3. Insert the switcher into the rack, align the holes in the mounting bracket with

those of the rack.

4. Secure the switcher to the rack using the supplied machine screws.

TPX 88 Matrix Switchers • Installation2-2

Cabling and Rear Panel Views

All connectors are on the rear panel. The switcher can connect to as many as eight
compatible twisted pair transmitters for input and twisted pair receivers for output.
The TPX 88 A has output connections for eight local audio outputs. See the tables
on page 1-3 and page 1-4 for audio compatibility. Figure 2-2 shows the rear panel
of a TPX 88 A twisted pair matrix switcher.

The rear panel of the TPX 88 has most of the same features as the TPX 88 A,
but without the local audio connectors.

3

LR1LR2LR3LR4 LR5 LR6 LR7LR

AUDIO

OUTPUTS

1234 5678

INPUTS

1234 5678

OUTPUTS

8

REMOTE

RS-232

RS-422

ANAHEIM, CA.

MADE IN USA

TX-

RX -

TX +

GND

RX +

1 2 5 4

Figure 2-2 — TPX 88 A twisted pair matrix switcher with audio

CAUTION

Do not connect this device to a computer data or telecommunications
network

RJ-45 termination must comply with the TIA/EIA T 568A or TIA/EIA T 568B
wiring standards for all connections.

Inputs connectors — Connect one end of a TP cable to each of these RJ-45

1

female connectors. Connect the other end of each cable to a compatible
twisted pair transmitter. See Termination of TP cable in this chapter.

Outputs connectors — Connect one end of a TP cable to each of these RJ-45

2

female connectors. Connect the other end of each cable to a compatible
twisted pair receiver. See Termination of TP cable in this chapter.

Extron skew-free A/V cable is recommended for all applications.
CAT 5 and CAT 6 cable can be used for TP and VTT transmitters and

receivers.
CAT 6 cable is not recommended for MTP transmitters and receivers.
The TP R receivers’ automatic level and peaking and signal detect features

require the use of a TPX 88 A.
To support TP R receivers’ level and peaking features, either the automatic or

manual adjustment, use TP cables of approximately the same length on all TP
inputs (

1

) and on all TP outputs (2).

100-240V 0.3A

6

50-60Hz

Audio Outputs connectors (TPX 88 A only) — These 3.5 mm, 5-pole captive

3

screw connectors output unamplified, unbalanced or balanced line level
audio. The local audio outputs follow the RJ-45 outputs; that is, if input 6 is
tied to output 1, then audio output 1 is the input 6 audio. See Audio outputs

connectors (TPX 88 A only) in this chapter.

These audio outputs are not available if the TP input is from an MTP family
transmitter.

Remote connector — Connect a host device to the TPX 88 via this 3.5 mm,

4

5-pole captive screw connector for serial RS-232/RS-422 control. See Remote
port configuration in this chapter.

2-3TPX 88 Matrix Switchers • Installation

Installation, cont’d

Remote configuration DIP switches — Set these DIP switches to

5

select either RS-232 or RS-422 serial control protocol. Set DIP switches
1 and 2 both down for RS-422 or set switches 1 and 2 both up for
RS-232. DIP switch 3 should always be up. See Remote port
configuration in this chapter.

AC power connector — Plug a standard IEC power cord into this connector

6

to connect the switcher to a 100 VAC to 240 VAC, 50 or 60 Hz power source.

Termination of TP cable

Figure 2-3 details the recommended termination of TP cables for the compatible
twisted pair transmitters and receivers in accordance with the TIA/EIA T 568A or
TIA/EIA T 568B wiring standards.

1&2

Clip Down

12345678

1

2345678

3&6 4&5

Side

RJ-45

connector

Twisted

Pairs

* The TPX 88 A switches wire pair 3 and 6.
The TPX 88 does not switch wire pair 3 and 6.
Audio or serial data from an RGB video MTP is incompatible with both TPX models. They cannot be switched.

If you are using Enhanced Skew-Free™ A/V cable, use the TIA/EIA T 568A standard only.

NOTE

TP and VTT transmitters and receivers

568 A

Pin wire color

1 White-green Red/V. sync + Video +
2 Green Red/V. sync

3* White-orange Audio +
4 Blue Blue Green + Reserved
5 White-blue White-blue Green
6* Orange Green Audio
7 White-brown Blue/H. sync + No signal
8

Brown Blue/H. sync

568 B

wire color

White-orange
Orange

White-green

White-brown
Brown

RGBHV and

audio signal

MTP transmitters and receivers

7&8

568 A 568 B

Wire

color

Pin

1

White­green

2 Video –

Green

White-

3*

orange

4

Blue
White-

5

blue

6*

Orange

White-

7

brown

8

Brown

Wire

color

White­orange

Orange

White­green

Blue
White-

blue

Green

White­brown

Brown

Composite

video MTP

signal

Video +

NONE

Audio
left +

Audio
left –

NONE

Audio
right +

Audio
right –

–

–

–

–

S-video

MTP signal

Luma (Y) +

Luma (Y) –

NONE

Chroma (C) &
audio left +

Chroma (C) &
audio left –

NONE

Audio right+

Audio right –

Composite video
and audio signal

Video

–

Audio+

Reserved
Audio

–

No signal

RGB video
MTP signal

Red/
V. Sync +

Red/
V. Sync –

Mono audio +
or RS-232 +

(MTP 15HD
only)

Green +

Green –
Mono audio –

or RS-232 –

(MTP 15HD
only)

Blue/
H. Sync +

Blue
H. Sync –

RS-232

RS-422

Figure 2-3 — TP cable termination

TPX 88 Matrix Switchers • Installation2-4

Enhanced Skew-free A/V cable is not recommended for Ethernet/LAN
applications.

This cable is specially designed for compatibility with Extron’s Twisted Pair
products that are wired using the TIA/EIA 568 A standard.

The green, brown, and blue pairs of this cable have virtually identical lengths
and should be used to transmit the RGB signals.

The orange pair of this cable has a different length and should not be used to
transmit the RGB signals.

• You can use either wiring standard, but ensure that you use the same

standard on both ends of both cables; the cable from the transmitter and the
cable from the receiver.

• Ensure that you terminate the RJ-45 connectors for each cable properly for the
family (TP, VTT, MTP) of transmitter or receiver connected.

• On RGB video MTPs, the audio or serial data that is carried on wire pairs 3
and 6 is incompatible with the TPX 88 A. The TPX 88 A cannot switch the
audio or serial data, output the audio locally, or break the audio away.

• The TPX 88 does not switch or process wire pair 3 and 6.

Most TP transmitter/receiver audio (audio that is associated with the

°

RGBHV link) is carried on wire pair 3 and 6, so the TPX 88 cannot switch
this audio.

On S-video and composite video MTPs, audio is carried on wire pairs

°

other than pair 3 and 6, so the TPX 88 switches this audio. The TPX 88
cannot output the audio locally or break it away.

• The TPX 88 A switches and processes wire pair 3 and 6.

The TPX 88 A switches and processes the proprietary digital audio link

°

that is associated with the TP transmitter/receiver family, which is
carried on wire pair 3 and 6.

Cable testing

Systems that use Extron’s skew-free UTP cable do not need to be tested for
skew.

To ensure proper cable termination, each transmission cable system that uses CAT 5
cable should be tested. Testing the cable between the RJ-45 connections at the
transmitter and TPX 88 (transmitter cable system) and between the TPX 88 and the
receiver (receiver cable system) gives the most accurate indications of cable
problems.

There are two varieties of cable runs: simple runs, in which a single cable is
terminated only at the transmitter, TPX 88, and receiver, and complex runs, which
can include patch bays and multiple terminations and lengths of cable. In either
case, the entire transmitter cabling system and receiver cabling system should be
tested.

A complete test measures cable length and tests the wire map, attenuation, NEXT,
PSNEXT, ELFEXT, PSELFEXT, return loss, ACR and PSACR. All of these tests are
critical for digital data transfer, but not for analog video. While all of these tests are
important indicators of the quality of the cable termination, the most critical testing
parameters for video transfer are wire map (T-568-A or T-568-B termination) and
pair length measurements. The largest concern is equalization of skew between
cable pairs. Cable systems of 300 feet (91 meters) or less should exhibit no
transmission problems if they pass at least CAT 5e or preferably CAT 6-D5 channel
certification testing.

2-5TPX 88 Matrix Switchers • Installation

Installation, cont’d

The Microtest OMNI SCANNER 2 performs comprehensive certification testing to
the proposed CAT 6 standards. Other manufacturers also make testing equipment.
The tests include advanced diagnostics for troubleshooting the cause and location
of many cable and termination problems. For simple installation testing, the
Microtest MICRO SCANNER PRO tests wire map and cable length, including
individual cable pair length.

The manufacturing process for network (CAT 5) UTP cable leads to a condition
called pair skew. Skew exists between pairs when the physical length of one wire
pair is different from another. As the transmission cable length increases, the
amount of skew increases. Skew affects the displayed image when the differential
length between wire pairs exceeds 2 feet, causing the timing of the red, green, and
blue video signals to appear out of alignment (horizontal registration errors). A
white vertical line on a black field can appear as individual red, green, and blue
lines that are close together; the signal transmitted on the shortest wire pair leads
the other colors and appears to the left on the display.

Pair skew can be measured with test equipment. UTP cable test equipment
measures and reports wire pair length. In certain circumstances, the report on the
various pair lengths can be used in equalizing pair skew.

If test equipment is not available, skew can be identified by viewing a crosshatch
test pattern with a critical eye to determine if either the red, green, or blue video
image leads (appears to the left of) the other two video images.

For best results when using CAT 5 cable in A/V applications, pair skew needs to be
equalized. Extron suggests several ways to equalized the pair skew as follows.

The design of Extron’s Skew-Free A/V UTP cable minimizes pair skew to the
point that equalization is not required.

If there are different cable types and/or big differences in input cable length,
skew compensation will not work.

Equalizing pair skew with Skew Equalizers

Try using the following methods to minimize or eliminate pair skew:

• If using MTP 15HD (RGB video) receivers, switch to SEQ versions of the
receivers.

• Install separate SEQ 100 15HD or SEQ 100 BNC Skew Equalizers on the
receivers’ video outputs and adjust the skew for the leading video image.

Equalizing pair skew with skew compensation cables

The nominal velocity of propagation (NVP — the speed at which the signal travels
on the transmission line, measured as a percentage of the speed of light) of TP cable
is very close to that of conventional coaxial cable. The similarity in NVP means
that, when all transmitter cables systems use the same cable type and are
approximately equal in length, by adding an additional length of coax, equal to the
length of pair skew, placed on the receiver’s output, you can equalize the effects of
pair skew (figure 2-4).

If UTP cable test measurement cannot be done, pair skew can still be equalized,
assuming that all of the transmitter cable systems are equal, by viewing a
crosshatch test pattern with a critical eye. Examine the test pattern for loss of
horizontal registration and, through a process of trial and error, equalize any pair
skew with coax extensions on the red, green, and/or blue outputs.

Extron skew compensation coax cables are available in lengths of 2 through 20 feet,
see Appendix A for part numbers.

TPX 88 Matrix Switchers • Installation2-6

TP T 15HD A

PC Computer

A

U
D

IO

C

O
M

P

U
T
E

R

IN

P

U
T

ID PIN 4

ID PIN 11

B

U

F
FE
R

ED

LO

C

A
L

M
O

N
IT

O
R

TPX88 A

IF cable measurement

of all cables indicates
that the pair with wires

1 and 2

is three feet shorter

than the other signals

A

.3
0
V

0
4

-2
0
0
1

ANAHEIM, CA.
MADE IN USA

z
H
0

-6
0

5

TE
O

RX +

M

RX -

TX +

TX-

GND

RGB INPUT

(total for all cables)...

TP R BNC A

R

B

L

AUDIO

A

L

C SYNC

R

SOG

V

H/HV

RGB OUTPUT

B

R G

C
D
A

POWER

.5
V
5
1

H

-S
H
IF

T

CAT5 T 15HD A

E
R

R

L

-422

RS

R

RS-232

7

L

8

R

6

L

6 7

5

R

5

TS

L

U

UTP

O

4

R

4

2 3

IO

L

TS
UD
A
TPU

1

U

O

3

LR

2

L R

78

6

R

1

5

L

TS

U
P
IN

4

3

2

1

Pair RGB video

CAT 6 TP Cable

1, 2 Red
4, 5 Green
7, 8 Blue

... THEN insert a three foot

extension cable to equalize

UTP skew for red video.

Figure 2-4 — Pair skew equalization

Audio outputs connectors (TPX 88 A only)

The Audio Outputs connectors are 3.5 mm, 5-pole captive screw connectors that

output unamplified, line level audio. The local audio outputs
follow the RJ-45 outputs; that is, if input 6 is tied to output 1, then
audio output 1 is the input 6 audio.

Connect audio devices, such as an audio amplifier or powered
speakers. See figure 2-5 to properly wire an output connector.

Tip

See caution

Sleeve

Tip

See caution

Unbalanced Output

Figure 2-5 — Captive screw connector wiring for audio output

CAUTION

Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal will damage the audio output circuits.

The audio level for each input can be can be individually set, using the front panel
or under RS-232/RS-422 control, to ensure that the output level does not vary from
input to input. See chapter 3, Operation, chapter 4, Programmer’s Guide, and
chapter 5, Switcher Software for details.

By default, the audio output follows the video switch. Audio breakaway, which
can be commanded via the front panel or under RS-232/RS-422 control, allows you
to select from any one of the audio input sources. See chapter 3, Operation, chapter
4, Programmer’s Guide, and chapter 5, Switcher Software for details.

Sleeve (s)

Tip

Ring

Tip

Ring

Balanced Output

LCD Projector

2-7TPX 88 Matrix Switchers • Installation