Black Box AC155A-R3 User manual

TRADEMARKS USED IN THIS MANUAL
AC155A-R3
AC155AE-R3
UMA1088 Rev B
Compact CAT5 Audio/Video Receiver
Converts the CAT5 signals sent from the AC154A-2
or AC154A-8 splitter back to standard VGA video
and audio for connection to a standard VGA monitor
and PC speakers.

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Compact CAT5 Audio/Video Receiver
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BLACK BOX and its logo are registered trademarks of BB
Technologies, Inc.
Apple and Macintosh are registered trademarks of Apple Computer, Inc.
Belden Brilliance® is a registered trademark and VideoTwist™ is a
trademark of Belden Technologies, 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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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 J 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 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 classe A prescrites dans le
Règlement sur le brouillage radioélectrique publié par Industrie Canada.

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Compact CAT5 Audio/Video Receiver
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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.

Compact CAT5 Audio/Video Receiver
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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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Compact CAT5 Audio/Video Receiver
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Contents
1. SPECIFICATIONS .........................................................................6
VIDEO ................................................................................................6
AUDIO ................................................................................................6
GENERAL ..........................................................................................6
2. OVERVIEW ....................................................................................7
2.1 INTRODUCTION ...........................................................................7
2.2 FEATURES..................................................................................7
2.3 WHAT’S INCLUDED......................................................................8
2.4 HARDWARE DESCRIPTION ...........................................................8
3. INSTALLATION ...........................................................................10
4. CONFIGURATION & OPERATION .............................................13
4.1 WHY CABLE COMPENSATION?...................................................13
4.2 COMPENSATION ADJUSTMENT PROCEDURE ...............................14
4.3 ADVANCED ADJUSTMENT (CATX AWG).....................................15
5. TROUBLESHOOTING.................................................................16
5.1 PROBLEMS/SOLUTIONS.............................................................16
5.2 CALLING BLACK BOX.................................................................18
5.3 SHIPPING AND PACKAGING ........................................................18

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1. Specifications
Video
Gain Unity
Impedance 75 ohms
Maximum resolution Up to 1920x1200 and 1080p at 750 ft (234.4 m); 1280x1024 at 850 ft. (386.4)
Nominal amplitude 1 V p-p for Y of component video
0.7 V p-p for RGB and for Pr and Pb of component video
4.0 V to 5.0 V p-p, for TTL Sync signals of RGBHV, RGBS
Number/signal type 1 proprietary analog signal input. Standard VGA output RGBHV, RGBS, RGsB, RsGsBs,
component video (bi-/tri-level sync)
Polarity Positive or negative
Connectors 1 female RJ-45 input, 1 HD15 output
Audio
Frequency
response
20 Hz to 20 kHz, ±1 dB
Gain Unbalanced output: 0 dB
THD + Noise 0.2% @ 1 kHz, 0.3% @ 20 kHz at nominal level
Type Monaural, Simulated Stereo
Connector (1) 3.5 mm connector
General
Compliance CE, FCC Part 15 Subpart J Class A, IC Class
Cooling Convection, vents on each end
Enclosure type Metal
Mounting Brackets at each end with screw hole provided for Wall or Rack mounting
Recommended cable CAT 5/5e/6 (shielded or unshielded)
Vibration ISTA 1A in carton (International Safe Transit Association)
Temperature/humidity Operating: +32 to +122 °F (0 to +50 °C); Storage: -40 to +158 °F (-40 to +70 °C)
Humidity 10% to 90%, non-condensing
MTBF 90,000 hours
Power 100 VAC to 240 VAC, 50-60 Hz, external; 5 VDC, 2 A, regulated; 2.1mm
Dimensions 1.18" H x 2.75" W x 3.85" D (3 cm H x 7 cm W x 9.8 cm D)
Product weight 0.75 lb (0.35 kg)
Shipping weight 1.5 lbs (0.70 kg)

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2. Overview
2.1 Introduction
•The Compact CAT5 Audio/Video Receiver (AC155A-R3) is
designed to be used with the 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-R3.
•The AC155A-R3 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 allow the user to compensate for signal
losses in long cable runs.
2.2 Features
•Supports resolutions up to 1920x1440 at 60 Hz
•Adjustable cable length compensation to 1000 ft
•Rugged, reliable and compact size
•No software required for setup and use
•Receives audio and video on a single CATx cable

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2.3 What’s Included
•Compact CAT5 Audio/Video Receiver
•This user’s manual
•Power Supply
•Power Supply Cord
2.4 Hardware Description
2.4.1 Side 1 Panel
Figure 2.1 shows the receivers Side 1 Panel. Table 2-1 describes its
components.
TABLE 2-1
Number Component Description
1 Power Connector Power Input
2 Power LED Illuminates when power applied
3 3.5 mm Connector Audio Out
4 RJ-45 Connector UTP Input
↑↑↑↑
1 2 3 4
Figure 2.1

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Compact CAT5 Audio/Video Receiver
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2.4.2 Side 2 Panel
Figure 2.2 shows the receivers Side 1 Panel. Table 2-2 describes its
components.
TABLE 2-2
Number Component Description
5 LED Indicator SELECT LED
6 LED Indicator DOWN LED
7 LED Indicator UP LED
8 HD15 Connector VGA Output
9 Push button SELECT Button
10 (2) Push buttons Down/Up Buttons
Figure 2.2
5 6 7
↓↓↓
↑↑↑
8 9 10

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3. 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
the respective user’s Manual.
2. Using Category-5 cable, connect the output of the Splitter to the
AC155A-R3 Receiver’s UTP IN connector (see Figure 2.1)
3. Connect a monitor and powered speakers to the Receiver’s
VGA and AUDIO OUT connectors (see Figure 2.2).
4. Attach the supplied power supply to the AC155A-R3 (Figure 2.1)
and plug it in the AC power outlet.
5. Figure 3.1 below shows a typical installation
Figure 3.1
Typical Installation
Remote Monitor
and Speakers
Local Monitor and
Speakers
VGA and Audio
Source

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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 peak-to-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-R3 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/ Oran
g
e Stri
p
e
2 Orange
3 White w/Green Stripe
4 Blue
5 White w/Blue Stripe
6 Green
7 White w/Brown Stripe
8 Brown

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Tips on Cable Selection for Best Image Quality
The AC155A-R3 compensates for high frequency losses in the cable. However,
due to the twist ratio differences 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 does.

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4. Configuration &
Operation
4.1 Why Cable Compensation?
All cables attenuate (reduce) the high-frequency components of the
video signal that is being transmitted. The longer the cable, the more
signal loss. If not compensated for, this signal loss will result in blurry
and smeared images being displayed.
The image quality depends on the resolution and level of detail in the
image. The Compact CAT5 Audio/Video Receiver has one of the
most precise and complex equalization techniques in the industry
and allows for full recovery of the original signal’s bandwidth.
Make this adjustment using a test pattern that is designed to depict
and exaggerate this effect. Connect a PC to the video input and
display a test pattern.
The table below lists the recommended maximum distances from
sender to the receiver depending on the resolution used.
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 4-1
Recommended maximum CATx cable length from sender to the receiver

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4.2 Compensation Adjustment Procedure
•Press the SELECT button once to enter the adjustment-mode
(that is, without first hitting SELECT button the up and down
arrows are inactive).
•In adjustment-mode, all 3 LEDs on the unit will be turned on.
•The UP or DOWN buttons can now be used to adjust the high
frequency (HF) compensation up or down until the video no
longer looks smeared (see figure 4-1 & 4.2 below).
•Pressing both the UP & DOWN buttons together resets the
current adjustment back to zero. This is a quick way to start
over.
•To exit the adjustment mode at any time, press the SELECT
button (the unit also has a built-in timeout to exit this mode).
Figure 4.1 - Typical test patterns used for adjusting compensation

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4.3 Advanced Adjustment (CATx AWG)
The AC155A-R3 automatically equalizes the brightness of the
video as the smearing is reduced. This automatic adjustment is
based on the assumption that typical 24 AWG CATx cable is
being used. When using 23 AWG CATx cable, then when the
smearing is minimized, your image may be brighter than normal.
In many installations, this is not critical and usually requires no
adjustment. There is a setting for the cable type (23 vs. 24
AWG) that can be changed for different performance.
•While in the adjustment-mode, press and hold the SELECT
button for at least 3 seconds to enable the WIRE SIZE
selection mode between 23-gauge wire and 24-gauge wire.
•The UP button is used to select 24-gauge wire. The DOWN
button is used to select 23-gauge wire.
•To exit the adjustment mode at any time, press the
SELECT button (the unit also has a built-in timeout to exit
this mode).
Figure 4.2 – Effect of adjustment on the smearing

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5. Troubleshooting
5.1 Problems/Solutions
Problem: Fuzzy, blurry, or ghosting image at remote location
Solution: If you have a stable image but it looks somewhat blurry
(e.g. the edges are not sharp), make sure that you have adjusted the
receiver unit’s HF compensation correctly. In addition, check the
recommended table of max distances vs. resolution and ensure that
you have not exceeded the maximum recommended cable lengths. If
you still have a fuzzy image, try reducing the refresh rate and/or
resolution of the video source.
Problem: Image exhibits steady or rolling horizontal color “hum” bars
Solution: 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 of ground noise between the two locations, but no more.

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Problem: Shaking image or periodically blanking monitor
Solution: 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.
Problem: The PC does not recognize a Plug-and-Play monitor
Solution: 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 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.
Problem: Faint shadows or ghosts at the remote monitor
Solution: 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.

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Problem: Poor audio quality at the Receiver
Solution: 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.
5.2 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
or [email protected]
Before you do, make a record of the history of the problem. We will
be able to provide more efficient and accurate assistance if you have
a complete description.
5.3 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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