Black Box TV Video Accessories 4 Port XGA Video Splitter User Manual

January 2002  
AC090A  
4-Port XGA Video Splitter  
With Long Cable Drive Capability  
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX  
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
CUSTOMER  
SUPPORT  
INFORMATION  
 
4-Port XGA Video Splitter  
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 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 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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4-Port XGA Video Splitter  
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.  
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4-Port XGA Video Splitter  
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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4-Port XGA Video Splitter  
Contents  
1. Introduction ...............................................................................page 6  
1.1 General ................................................................................page 6  
1.2 Features ...............................................................................page 6  
2. Installation .................................................................................page 7  
3. Operation .................................................................................page 10  
4. Troubleshooting.......................................................................page 11  
4.1 Problem Solving FAQ ........................................................page 11  
4.2 Calling Black Box ..............................................................page 12  
4.3 Shipping & Packaging........................................................page 12  
5. Specifications...........................................................................page 14  
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4-Port XGA Video Splitter  
1. Introduction  
1.1 General  
The Model AC090A is a 1 in x 4 out XGA Video Splitter / Distribution  
Amplifier with field-programmable cable length compensation on 2  
outputs for driving long video cables.  
The unit accepts a VGA input signal from a computer and provides 2  
standard outputs and 2 boosted outputs. The standard outputs are labeled  
"STD" and are capable of driving cables up to approximately 150 feet.  
The boosted outputs are labeled "DX" and can be programmed using dip-  
switches to drive any length of cable up to 600 feet.  
The Model AC090A fully terminates the input video signal and  
amplifies it using high bandwidth buffers to ensure a clear and crisp  
image at each output. The unit accommodates a maximum resolution of  
1600 x 1200 pixels at refresh rates to 100 Hz.  
It is recommended that when video extension cables are required, only  
high quality multi-coaxial VGA or RGBHV (such as Black Box  
EVNPS05-0050-MF) be used.  
The Model AC090A is housed in a compact shielded enclosure and  
includes a small power adapter and a 6 ft video cable for connection to  
the PC’s VGA output.  
1.2 Features  
·
·
·
·
·
·
Low cost, high reliability  
Packaged in a portable EMI shielded enclosure  
Field-programmable compensation for driving long cables  
Resolutions up to 1600 x 1200  
HD15 connectors for input and outputs  
Perfect for presentations or remote monitoring  
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4-Port XGA Video Splitter  
2. Installation  
1. Connect the COMPUTER input connector on the AC090A to the  
computer's video (or any other compatible video source) using the  
supplied cable (see figures 2.1). The video connector on the PC is  
usually a HD15 female with three rows of contacts.  
XGA Splitter  
Outputs 1 and 2 (DX)  
Can Drive Long Cables  
Figure 2.1  
Figure 2.2  
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4-Port XGA Video Splitter  
2. Connect the AC adapter to the PWR jack on the splitter and plug it  
in the AC source. Connect up to 4 monitors to the outputs of the  
splitter. If any of the monitors are to be located further than 150  
feet, plug them in to the DX ports of the splitter (see figure 2.2).  
3. The Model AC090A has a special compensation to drive long  
video cables that can be applied to outputs 1 & 2. Use the  
following table to set the dip-switch for these outputs (see figure  
2.3).  
Dip Switch Setting  
Range of Cable on Outs 1 & 2  
~~  
€~  
~€  
€€  
0
to 100 feet  
100 to 250 feet  
250 to 400 feet  
400 to 600 feet  
Figure 2.3  
NOTE  
The compensation setting affects both DX outputs equally  
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4-Port XGA Video Splitter  
4. If you are using cables longer than 25 feet on any of the outputs of  
the splitter, make sure that the cable is connected to a monitor for  
proper termination, or else disconnect the cable from the splitter.  
High-Density 15-Pin VGA Connector  
PIN  
1
Function  
Red  
2
Green  
3
Blue  
4
Not Used  
5
Gnd  
6
Red Return (Gnd)  
Green Return (Gnd)  
Blue Return (Gnd)  
Key (Not Used)  
Gnd  
7
8
9
10  
11  
12  
13  
14  
15  
Gnd  
SDA (plug-n-play)  
Horizontal Sync  
Vertical Sync  
SCL (plug-n-play)  
On the Model AC090A splitter the SDA and SCL pins are connected  
from the input to output #4  
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4-Port XGA Video Splitter  
3. Operation  
The video signal is fully terminated and buffered in the AC090A. The  
splitter should operate optimally with no special attention or procedure.  
Assuming that there are no major grounding or large EMI noise  
problems present in the installation location, the video quality at the  
remote stations depend on the quality and the length of the video cables  
used. In addition, the resolution and refresh rate settings of the  
computer affect image clarity.  
In general you can expect excellent image reproduction at any  
resolution setting. When long video cables are used, particularly at high  
resolution and refresh rates, video losses may be incurred in the cable.  
Refer to section 2 for details.  
The Model AC090A can split the signal of virtually any video with HD  
15 style of connector. It can also be used on the analog video output  
signal of other PC’s or computers such as: Apple, Sun, SGI, and RGB  
type outputs. However, some may require special adapter cables.  
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4-Port XGA Video Splitter  
4. Troubleshooting  
4.1 Problem Solving FAQ  
1) Fuzzy, blurry, or ghosting image at remote location  
If you have a stable but somewhat blurry image (object or character  
edges are not sharp), make sure that you have set the unit’s  
compensation switches correctly. If you still have a fuzzy image, try  
reducing the refresh rate and/or resolution of the PC. You should also  
be sure to use multi-coaxial (double shielded) 75 ohm video extension  
cables for best results. A ghosting image is usually an indication of  
impedance mismatch of the cable.  
If too much compensation is applied at the splitter, a bright and  
ghosting image may also result. In this case try reducing the amount of  
compensation.  
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.  
3) 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's  
OUTPUT #4. Only the ID information of the monitor at OUTPUT #4  
is passed to the PC. If the PC does not produce an image due to this,  
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4-Port XGA Video Splitter  
either connect a monitor to this output port, or disable the plug-and-play  
monitor detection in the PC’s operating system.  
4) Faint shadows or ghosts at the monitors  
If you are using cables longer than 25 feet on any of the outputs of the  
splitter, make sure that the cable is connected to a monitor for proper  
termination, or else disconnect the cable from the splitter.  
5) Substituting power supplies  
The splitter relies on the AC power adapter that is supplied with it. The  
adapter generates a floating 12 v DC power for the unit. If you intend to  
use a different external DC power that is referenced to ground, the  
splitters will not function properly.  
4.2 Calling Black Box  
If you determine that your splitter 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 problem. We will be  
able to provide more efficient and accurate assistance if you have a  
complete description, including:  
• The nature and duration of the problem  
• The components involved in the problem—that is, what type of  
cable, makes and models of computers and monitors, etc.  
• The results of any testing you’ve already done  
4.3 Shipping and Packaging  
If you need to transport or ship your splitter:  
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4-Port XGA Video Splitter  
• 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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4-Port XGA Video Splitter  
5. Specifications  
Compliance CE; FCC Part 15 Subpart B Class A, IC Class  
Standards  
Interfaces  
Supported  
VGA, SVGA, or XGA video  
VGA video  
Video Types VGA through XGA, RGBS, or RGsB (sync-on-green)  
Resolution &  
Refresh Rate Up to 1600 x 1200 non-interlaced at up to 100 Hz  
Bandwidth  
Video: DC to 250 MHz  
Video Level 0.7 volts peak-to-peak  
Maximum  
Distance  
Up to 600 ft. (180 meters) – See section 2 for details  
Connectors  
HD15 female for all video input and output  
10,000 ft. (3048 m)  
Maximum  
Altitude  
Temperature  
Tolerance  
Operating: 32 to 122°F (0 to 50°C);  
Storage: –40 to +185°F (–40 to +85°C)  
Humidity  
Enclosure  
MTBF  
Up to 95% non-condensing  
Steel  
500,000 hours (calculated estimate)  
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4-Port XGA Video Splitter  
Power  
From utility-power (mains) outlet, through included  
external power adapters. Output Voltage: 12v DC  
Center-Positive, floating (do not substitute any other  
external power supply). Power supply current  
requirements: 300 ma, minimum  
Size  
7.25" W x 2.75" D x 1.25" H  
2.0 lb  
Weight  
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4-Port XGA Video Splitter  
NOTES  
16  
 
© Copyright 2001. Black Box Corporation. All rights reserved.  
1000 Park Drive Lawrence, PA 15055-1018 724-746-5500  
Fax 724-746-0746  
 

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