Black Box AVS-HDB-4TX User manual

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Information
User Manual
Distributes one HDMI input to four HDBT outputs,
plus one local HDBT output.
Video Extender - 4K HDMI, IR, RS-232, 4-Port Transmitter
AVS-HDB-4TX

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Trademarks Used in this Manual
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of
BB Technologies, Inc.
Any other trademarks mentioned in this manual are acknowledged to be
the property of the trademark owners.

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FCC and IC RFI Statements/NOM Statement
FEDERAL COMMUNICATIONS COMMISSION AND
INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio-frequency energy,
and if not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a Class A computing
device in accordance with the specifications in Subpart B of Part 15 of FCC rules,
which are designed to provide reasonable protection against such interference
when the equipment is operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference, in which case
the user at his own expense will be required to take whatever measures may be
necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise
emission from digital apparatus set out in the Radio Interference Regulation
of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les
limites applicables aux appareils numériques de la classe A prescrites dans le
Règlement sur le brouillage radioélectrique publié par Industrie Canada.
Normas Oficiales Mexicanas (NOM)
Electrical Safety Statement
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes
de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.

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NOM Statement
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo,
cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca,
etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales
que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe
colocar en libreros o gabinetes que impidan el flujo de aire por los orificios
de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el
aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la
polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las
lineas de energia.

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NOM Statement
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea
usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su
desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

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Safety Precautions
Safety Precautions
For best results, read all instructions carefully before using the transmitter. Save this
manual for further reference.
• Unpack the equipment carefully and save the original box and packing material for
possible future shipment.
• Follow basic safety precautions to reduce the risk of fire, electrical shock, and injury to
persons.
• Do not dismantle the housing or modify the module. This may cause electrical shock
or burn.
• Using supplies or parts that do not meet the products’ specifications may cause
damage, deterioration, or malfunction.
• Refer all servicing to qualified service personnel.
• To prevent a fire or shock hazard, do not expose the unit to rain, moisture, or install
this product near water.
• Do not put any heavy items on the extension cable.
• Do not open or remove the housing of the device. This might expose you to
dangerous voltage or other hazards.
• Install the device in a place with proper ventilation to avoid damage caused by over-
heating.
• Keep the module away from liquids.
• Spillage into the housing may cause fire, electrical shock, or equipment damage. If an
object or liquid falls or spills on to the housing, unplug the module immediately.
• Do not twist or pull the ends of the optical cable. This can cause the device to mal-
function.
• Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to
the device before cleaning.
• Unplug the power cord when the device is unused for a long period of time.
• Disposal information: do not burn or mix the device with general household waste,
treat it as electrical waste.
NOTES:
1. PoC is short for Power over Cable.
2. The AVS-HDB-4TX transmitter works only with the AVS-HDB-RX receiver.
3. The item “far-end” means the device (e.g. display device, third-party RS-232 device
etc.) connected to the AVS-HDB-RX.

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Table of Contents
Table of Contents
1. Specifications................................................................................................. 8
2. Overview ....................................................................................................... 9
2.1 Introduction........................................................................................... 9
2.2 Features................................................................................................. 9
2.3 What’s Included .................................................................................... 9
2.4 Hardware Description.......................................................................... 10
3. System Connection...................................................................................... 14
3.1 Precautions for Use.............................................................................. 14
3.2 System Diagram .................................................................................. 14
3.3 Connection Procedure......................................................................... 14
3.4 Cascade Connection ........................................................................... 15
3.4.1 Cascade AV Signal...................................................................... 15
3.4.2 Cascade Control Signal .............................................................. 15
3.5 Twisted-Pair Cable Connection............................................................ 16
4. Control Modes ............................................................................................ 18
4.1 IR Control ............................................................................................ 18
4.1.1 Control the Far-End Device from the Local Device ...................... 18
4.1.2 Control the Local Device from the Remote Device ..................... 19
4.2 RS-232 Control.................................................................................... 19
4.2.1 Accessing through Serial............................................................. 20
4.2.2 RS-232 Communication Commands .......................................... 21
4.3 EDID Management.............................................................................. 23
5. Troubleshooting and Maintenance .............................................................. 24

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Chapter 1: Specifications
1. Specifications
Video
Video Input/Output VESA and SMPTE 480p to 2160p (4K)
Audio
Audio Input/Output All HDMI audio formats including Dolby D (TrueHD)/ DTS
(HD-Master Audio)/ PCM;
Channel count: from 2-8 (2.0 to 7.1);
Sample rates: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz and 192 kHz
HDBaseT
Distance 224 feet (70 m) with HDMI video, RS-232 and IR control,
PoC supports AVS-HDB-RX
Control Signals
RS-232 and IR Full function passthrough
RS-232 Port ID selectable for cascading
Power
Power Supply 24-VDC, 2.5 A
Physical
Enclosure Aluminum chassis
Dimensions 0.9"H x 5.8"W x 1.7"D (2.2 x 14.8 x 4.4 cm) (half rack
wide)
Weight Product: 1.32 lb. (0.60 kg);
Shipping: 3.67 lb. (1.67 kg)

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Chapter 2: Overview
2. Overview
2.1 Introduction
The Video Extender - 4K HDMI, IR, RS-232, 4-Port Transmitter distributes one HDMI
input to four HDBaseT outputs, plus one HDMI local output. You can use the HDMI out-
put socket to monitor local devices or cascade with an additional transmitter.
The AVS-HDB-4TX transmits uncompressed 4K (max) HDMI, IR, and RS-232 signals over
a single CAT5e/6/7 cable. It supports transmission of a 4K signal up to 128 feet (40
meters) and 1080p signal up to 224 feet (70 meters). If required, use the HDMI local
output to cascade the HDMI signal up to 4 times with additional AVS-HDB-4TX. AVS-
HDB-4TX is also capable of bi-directional IR control, RS-232 control, EDID management,
and PoC.
AVS-HDB-RX recievers are recommended to use the full function of the HDB outputs of
this device.
2.2 Features
• Complies with HDMI 1.4 and 3D standards.
• Transmits 4K x 2K signals up to 128 feet (40 meters) and 1080p signals up to 224 feet
(70 m).
• Supports PoC.
• Supports bi-directional IR control and cascade control.
• Supports RS-232 control and cascade control.
• Provides real-time display of working status via LED indicators.
• Supports EDID configuration, 5 types in total.
• Supports cascading via HDMI OUT, IR Loop, and RS-232 Loop.
2.3 What's Included
Your package should include the following items. If anything is missing or damaged,
contact Black Box Technical Support at 724-746-5500 or [e-mail].
• (1) Video Extender - 4K HDMI, IR, RS-232, 4-Port Transmitter (AVS-HDB-4TX)
• (2) mounting ears

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Chapter 2: Overview
• (8) screws
• (1) 3.5-mm male-male audio cable (used for IR signal cascading)
• (1) RS-232 cable (3-pin captive connector to DB9)
• (1) RS-232 cable (connect two 3-pin captive connectors for cascading)
• (4) plastic cushions
• (1) power cord
• (1) 24-VDC, 2.5-A power adapter
To download this user manual from our Web site:
1. Go to www.blackbox.com
2. Enter the part number (AVS-HDB-4TX) in the search box:
3. Click on the “Resources” tab on the product page, and select the document you
wish to download.
If you have any trouble accessing the Black Box site to download the manual, you can
contact our Technical Support at 724-746-5500 or [e-mail].
2.4 Hardware Description
Figure 2-1 shows the front panel of the Video Extender - 4K HDMI, IR, RS-232, 4-Port
Transmitter (AVS-HDB-4TX). Table 2-1 describes its components.
Figure 2-1. Front panel.