Black Box AC155A-R2 User Manual

Compact CAT5 Audio/Video Receiver

AC155A-R2

UMA1088 Rev. A

CUSTOMER

SUPPORT

INFORMATION

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Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
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Compact CAT5 Audio/Video Receiver

TRADEMARKS USED IN THIS MANUAL

BLACK BOX and its logo

are registered trademarks of Black Box

Corporation.

Apple and Macintosh are registered trademarks of Apple Computer, Inc.

IBM is a registered trademark of International Business Machines
Corporation.

SGI is a registered trademark of Silicon Graphics, Inc.

Sun and Sun Microsystems are registered trademarks of Sun Microsystems,
Inc. in the United States and other countries.

Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.

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AC155A-R2

FEDERAL COMMUNICATIONS COMMISSION

AND CANADIAN DEPARTMENT OF COMMUNICATIONS

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 their 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 the Canadian Department of Communications.

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 le ministère des Communications du Canada.

EUROPEAN UNION DECLARATION OF CONFORMITY

This product complies with the requirements of the European EMC
directive 89/336/EEC

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Compact CAT5 Audio/Video Receiver

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.

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 a 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.

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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AC155A-R2

Contents

1. Introduction ..............................................................................page 5

1.1 General ................................................................................page 5

1.2 Features ...............................................................................page 5

2. Installation.................................................................................page 6

3. Configuration & Operation........................................................page 8

4. Troubleshooting.........................................................................page 9

4.1 Problem Solving FAQ..........................................................page 9

4.2 Calling Black Box..............................................................page 10

4.3 Shipping & Packaging .......................................................page 10

5. Specifications...........................................................................page 11

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Compact CAT5 Audio/Video Receiver

1. Introduction

1.1 General

The Model AC155A-R2 is a Receiver designed to be the counterpart
for the Models AC154A-2 and AC154A-8 Splitters. It converts the
CAT5 signals sent from the Splitter back to standard VGA video and
audio for connection to standard VGA monitor and PC speakers.

The device is housed in a compact shielded enclosure and includes a
HD15 connector for the monitor, 3.5mm mini-stereo audio connector
for the speakers, and one RJ45 connector for the CAT5 cable input. A
small universal power supply is included with the AC155A-R2.

The AC155A-R2 can recover the VGA and audio signals from UTP or
STP (CAT5/5e/6) cables up to 1000 feet (300 meters) long with little to
no degradation. The Receiver features a proprietary circuit to
compensate for signal losses in long cable runs.

1.2 Features

• Buffered video and audio outputs

• Supports resolutions up to 1920x1440 at 60Hz

• Adjustable video compensation for receiving on CAT5 cables

to 1000 feet

• Rugged, Reliable, Compact size

• No software required

• Receives audio and video signals on one cable

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AC155A-R2

2. Installation

1. At the sending end, connect the AC 154A-2 or AC154A-8 to the

CPU and local monitor and keyboard per instructions given in
their User’s Manual.

Figure 2.1

Figure 2.2 Figure 2.3

2. Using Category-5 cable, connect the outp ut of the Splitter to the

AC155A-R2 Receiver’s UTP IN connector (see Figure 2.2)

3. Connect a monitor and powered speakers to the Receiver’s VGA

and AUDIO OUT connectors.

4. Attach the supplied power supply to the box and plug it in the AC

power outlet.

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Compact CAT5 Audio/Video Receiver

CAUTION

Before plugging in your remote monitor, verify that the AC line is
properly wired and that a protective ground (green) wire is
established with NO potential difference between both the sender
and Receiver locations (The UTP Splitter can tolerate up to 5 v peak­to-peak ground noise between the two locations) . Failure to ensure
good grounding can result in erratic operation and possible shock
hazards with severe damage to your equipment.

NOTICE

Do not connect this unit to any LAN device such as network cards or
hubs as this may damage the AC155A-R2 and/or the LAN device.
Use EIA/TIA 568B standard straight-through patch wiring as shown
below. Do not use crossover cables.

EIA/TIA 568B WIRING STANDARD

PIN Wire Color

1 White w/ Orange Stripe
2 Orange
3 White w/Green Stripe
4 Blue
5 White w/Blue Stripe
6 Green
7 White w/Brown Stripe
8 Brown

Tips on Cable Selection for Best Image Quality

The AC155A-R2 has compensation for high frequency losses in the cable.
However, due to the twist ratio difference in the UTP cable, it is
recommended to use UTP cables that are specifically designed for video
transmission. These cables are commonly referred to as zero or low skew
cables. Example: Belden Brilliance® VideoTwist™ 7987R/P. If you don’t
have access to this type of cable, we recommend using Cat5 (or Cat5e)
cable rather than Cat6 since Cat5 cables have better twist ratio match than
Cat6.

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AC155A-R2

3. Configuration & Operation

The only thing that requires configuration on the AC155A-R2 is the
COMPENSATION setting.

Please refer to Figure 2.2 for the location of the potentiometer. The pot
is recessed and you need a small screwdriver to adjust it.

The adjustment range of the pot is from fully CCW (minimum
compensation; good to distances of 0 to 100 feet) to fully CW (max
compensation for 1,000 feet). The adjustment is continuous and it is
best to start with a fully CCW position on the pot and after installation,
slowly turn the pot CW to obtain the best image.

The video quality at the remote station depends on the length of the
CAT5 cable, actual video resolution and refresh rate. Please refer to
Table 3.1 for maximum recommended length.

Refresh Rate

60 Hz 75 Hz 85 Hz
640x480 1,000 ft 1,000 ft 1,000 ft
800x600 1,000 ft 1,000 ft 1,000 ft
1024x768 1,000 ft 800 ft 700 ft
1280x1024 750 ft 600 ft 525 ft

Resolution

1600x1200 750 ft 600 ft 525 ft

Table 3.1

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Compact CAT5 Audio/Video Receiver

4. Troubleshooting

4.1 Problem Solving FAQ

1. Fuzzy, blurry, or ghosting image at remote location

If you have a stable image but it looks somewhat blurry, make sure that
you have set the Receiver unit’s compensation pot correctly. Also
check table 3.1 to see that you have not exceeded the maximum cable
length recommendation. If you still have a fuzzy image, try reducing
the refresh rate and/or resolution of the PC.

2. Image exhibits steady or rolling horizontal color “hum” bars

This is usually an indication of improper grounding either at the
sending end, the receiving end, or both. Verify that the AC line is
properly wired and that a protective ground (green) wire is established
with NO potential difference between both the sender and Receiver
locations. The UTP Splitter can tolerate up to 5 v peak-to-peak ground
noise between the two locations, but no more.

3. Shaking image or periodically blanking monitor

Although CAT5 cable uses twisted pairs to transmit the signals from
the Splitter to the Receivers to reduce the amount of EMI coupled noise
from other external sources, a strong electromagnetic noise field can
cause instability in the signal.

Usual sources of this form of noise coupling are high current AC lines
or other high-density data and/or control cables that run adjacent to and
parallel with a substantial length of the CAT5 cable. To eliminate this,
either place a distance between the CAT5 cables from the Splitter and
the interfering source, or use STP shielded CAT5 cables.

4. The PC does not recognize a Plug-and-Play monitor

If the PC’s Operating System is setup to detect a plug-and-play monitor
(usually in Display Properties Advanced Settings), it may have trouble
finding a monitor if no local monitor is hooked up to the Splitter (at the
sending end). Only the ID information of the local monitor is passed to

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AC155A-R2

the PC. If the PC does not produce an image due to this, either connect
a monitor to the local VGA output port, or disable the plug-and-play
monitor detection in the PC’s operating system.

5. Faint shadows or ghosts at the remote monitor

The Splitter at the sending end has multiple RJ45 output connectors.
When a long CAT5 cable is plugged in any of the outputs, the Splitter
expects a Receiver at the other end for proper termination. Therefore it
is a good idea to unplug the un-terminated CAT5 cables from the
Splitter unit. Please refer to item 1 above for other possible causes.

6. Poor audio quality at the Receiver

Only use powered speakers with the Receiver. It is also good practice
to set the audio level (volume) output of the PC about 1/2 to 2/3 from
the maximum and use the volume knob of the speakers to adjust the
volume to the desired level. A low volume signal output from the PC
reduces the signal-to-noise (S/N) ratio, whereas too high output
amplitude can cause saturation and clipping to occur.

4.2 Calling Black Box

If you determine that your Receiver is malfunctioning, do not attempt
to repair the unit. Contact Black Box Tech. Support at 724-746-5500.

Before you do, make a record of the history of the prob lem. We will be
able to provide more efficient and accurate assistance if you have a
complete description.

4.3 Shipping and Packaging

If you need to transport or ship your Receiver:

• Package it carefully. We recommend that you use the original
container.

• Before you ship the unit back to Black Box for repair or return,
contact us to get a Return Authorization (RA) number.

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Compact CAT5 Audio/Video Receiver

5. Specifications

Compliance CE; FCC Part 15 Subpart B Class A, IC Class

Standards VGA, SVGA, XGA, SXGA, or UXGA video

Interfaces Video: VGA; CAT5: Non-Standard

Supported
Video Types VGA through UXGA, RGBS, or RGsB (sync on

green)

Resolution &
Refresh Rate Up to 1920 x 1440 non-interlaced at 60 Hz

Bandwidth Video: DC to 250 MHz, Audio: 20 Hz to 10 KHz

Video Level 0.7 volts peak-to-peak

Audio
Format Line level (100 Ohm), mono signal, on a standard

3.5mm stereo output connector

Maximum
Distance Up to 1000 ft. (300 meters) – See table 3.2 for details

Connectors HD15 female for video, 3.5 mm Mini-Stereo for audio,

RJ45 for CAT5 A/V input

Maximum
Altitude 10,000 ft. (3048 m)

Temperature
Tolerance Operating: 32 to 122°F (0 to 50°C);

Storage: –40 to +185°F (–40 to +85°C)

Humidity Up to 95% non-condensing

Enclosure Steel

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AC155A-R2

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MTBF 200,000 hours (calculated estimate)

Power From utility-power (mains) outlet, through included

universal (100~240V) external power supply. Output
Voltage: 6v DC Center-Positive, Current requirements:
300 ma minimum

Size 1.22"H x 4.16"W x 2.60"D

Shipping
Weight 1.6 lb

© Copyright 2006. Black Box Corporation. All rights reserved.

1000 Park Drive Lawrence, PA 15055-1018 724-746-5500 Fax [phone]