Black Box AC504A Manuale utente

Mini-CAT5 Video-over-CAT5 Extension

Model AC504A VGA Extension

Model AC504A-CP Component Video (RGB or Y Cb Cr) Extension

March 2004

CUSTOMER

SUPPORT

INFORMATION

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

Web site: www.blackbox.com • E-mail: [email protected]

VGA & Component Video-over-CAT5 Extension

TRADEMARKS USED IN THIS MANUAL

Black Box, and (logo) are trademarks of Black Box Corporation.

IBM is a registered trademark of International Business Machines

Corporation. Any other trademarks mentioned in this manual are

acknowledged to be the property of the trademark owners.

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

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 designed 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 intended

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 or her 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.

EUROPEAN UNION DECLARATION OF CONFORMITY

This product complies with the requirements of the European EMC

directive 89/336/EEC

Model AC504A & AC504A-CP

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.

VGA & Component Video-over-CAT5 Extension

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;

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.

Model AC504A & AC504A-CP

Contents

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

1.1 Model AC504A for VGA .....................................................page 5

1.2 Model AC504A-CP for Component Video (RGB or Y Cb Cr) ..page 5

1.3 Features ..................................................................................page 6

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

3. Configuration and Operation.................................................page 8

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

Contacting Black Box..............................................................page 10

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

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

VGA & Component Video-over-CAT5 Extension

1. Introduction

1.1 Model AC504A … for VGA

The Model AC504A is a UTP (CAT5) VGA video extender consisting

of a transmitter (AC504A-S) and a receiver (AC504A-R) sold together

as a pair. The transmitter converts a PC's VGA signal into a format that

can be transmitted using a single inexpensive and commonly available

Category-5 Unshielded Twisted Pair (UTP) cable with RJ45

connectors, which is used in most Local Area Networks.

At the receiving (remote) end the Cat5 signal is converted back to VGA

for connection to your monitor, projector or other display device.

The transmitter and receiver are each housed in a small plastic

enclosure and include a HD15 video connector and a RJ45 connector

for the Cat-5 cable. Included with the pair of devices are: one small

universal power supply (can be powered at either end), and a short

adapter cable for easy connection to the standard HD-15 connector of

the PC.

The Mini-CAT5 Extender can drive CAT5 LAN cables to 500 feet (150

meters) with excellent video quality.

1.2 Model AC504A-CP … for Component Video (RGB or

YPbPr or YCbCr)

This variation of the AC504A includes cables for each end that allow

connection of the transmitter to the 3 RCA connectors of DVD-players

or other video sources that output Component Video (RGB or Y Pb Pr,

or Y Cb Cr). A similar cable is also provided for the receiver for

connection to compatible displays such as HDTV’s or high-end

monitors. The actual sender and receiver units are identical to the

standard AC504A and, in fact, you can use the pair to send VGA video

if you substitute VGA cables.

Model AC504A & AC504A-CP

1.3 Features

•Eliminates the need for bulky , expensive and hard to build

multi-coaxial cables for high-resolution video extension

•Amplifies the signal for clean and crisp transmission

•Differential signaling eliminates ground loops and noise

•Handles resolutions up to 1600x1200 at any refresh rate

•Rugged, Reliable, Compact size

•Only one end requires power in most applications. Power

supply can be connected at the sending or the receiving end,

whichever convenient.

•Drive standard CAT5 cables to 500 feet (for VGA and

Component video versions) or to 1200 feet for (Composite

Video and Stereo Audio version)

•Perfect for Remote Monitoring, Video Staging, Conference

Rooms, Classrooms, Home-Theatre Applications and more

2. Installation

1. Connect the VGA in (HD-15) connector of the AC504A

Transmitter to the computer's or other equipment’s video output

port using the supplied cable (see figure 2.1).

2. Connect the included power adapter to the power connector on

either of the transmitter or the receiver (for more information,

please see the recommendations immediately following this

paragraph). Be sure to insert the power connector fully. Check the

red light next to the RJ45 connector to verify unit’s power. When

the two units are connected Via CAT5 cable, the LED’s at both

ends should be lit.

VGA

CAT-5

Remote Monitor

Figure 2.1

VGA

Sender Receiver

VGA & Component Video-over-CAT5 Extension

Recommended Power Supply Connection

qCat 5 cable length of 0 to 150 feet:

It does not matter in which end you plug the power supply. Use

whichever end that is most convenient for your setup.

qCat 5 cable length of 150 to 300 feet:

We recommend that you plug the power supply a the receiving end.

qCat 5 cable length of 300 to 500 feet:

Please plug the power supply at the receiving end, however,

depending the grounding of the video source (PC) and the display

device at the remote end, you may need to purchase an additional

power supply to power up both ends.

qCat 5 cable lengths over 500 feet:

Purchase of an additional power supply to power up both ends is

almost certainly needed.

3. Using Category-5 cable connect the AC504A-Receiver to the

transmitter’s RJ45 output. Connect the remote monitor to the

receiver either directly (VGA) or using the HD15 to 3 RCA cable

(Component Video).

IMPORTANT

Do not connect this unit to any LAN device such as network cards or hubs

as this may cause damage. 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

1White w/ Orange Stripe

2Orange

3White w/Green Stripe

4Blue

5White w/Blue Stripe

6Green

7White w/Brown Stripe

8Brown

Model AC504A & AC504A-CP

Figure 3.1

3. Configuration & Operation

The Mini-CAT5 Receivers are equipped with an adjustment to improve

image quality when using long cables. The adjustment is made via a

single turn trim-pot located next to the power connector on the side.

When using a long cable, with no

compensation, any solid horizontal line,

tends to smear to the right. For example

in the image shown on the right, observe

the dark black line at the bottom of the

window and see how it is smearing to

the right (not changing to white abruptly

as it should). This is the effect of long

cable on the signal.

You can turn the trim-pot to eliminate

these streaks as shown on the 2nd

picture. If you add too much

compensation to the signal, then an

opposite effect may be observed, i.e.

black lines smear to the right as white

lines or vice-versa. The 3rd picture

shows the case where too much

compensation is added.

When using long cables, the image

quality is a function of resolution and

refresh rate. Lower resolution or refresh

rate, result in best picture. Therefore it is

best to set the refresh rate to 60 Hz at

any resolution.

Although the Mini-CAT5 extenders are compatible with all varieties of

UTP cable, for best results at long distances, use standard Category-5

Cable (instead of CAT5e or CAT6).

No-Compensation

Perfect Compensation

Too much Compensation

VGA & Component Video-over-CAT5 Extension

4. Troubleshooting

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

If you have a stable image but it looks somewhat blurry (object or

character edges are not sharp), try to adjust the compensation first.

When the trim-pot is turned fully CCW there is no compensation. As

you turn the pot clockwise you are applying compensation. Look at the

screen and slowly turn the pot clockwise. Notice what happens to the

right of solid horizontal lines (as in figure 3.1). If you still have a fuzzy

image, try reducing first the refresh rate and then the resolution of the

PC.

2. Shaking image or periodically blanking monitor

CAT5 cable employs twisted pairs to differentially transmit the signals

from the transmitter to the receiver in order to reduce the amount of

EMI (interference) coupled noise from external sources. However, 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 separate the Cat 5 cable of Mini-CAT5

Extender from the interfering source or use shielded CAT5 cables. Note

that separating the CAT5 cable from the EMI source by a few inches is

often sufficient to eliminate this problem.

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 the PC does not produce an image due to this,

disable the plug-and-play monitor detection in the PC’s operating

system Display Properties.

4. Substituting power supplies

The sender and receiver rely on the power adapter that is supplied with

them. Do not substitute any other power supply or DC power source

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