Black Box AC506A User manual

4x1 Compact VGA Switch

Model AC506A

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]

4x1 Compact VGA Switch

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

AC506A

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.

4x1 Compact VGA Switch

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.

AC506A

Contents

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

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

1.2 Features ...............................................................page 6

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

3. Configuration and Operation...............................page 7

3.1 Modes of Operation..............................................page 7

3.2 Front Panel Switches............................................page 7

3.3 RS-232 Control ....................................................page 8

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

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

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

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

4x1 Compact VGA Switch

1. Introduction

1.1 General

The Model AC506A is a versatile, compact, high performance, solid-state,

4 input x 1 output, VGA video switch that can operate at resolutions of up

to 1600x1200.

The unit allows one monitor to be switched between 4 video sources. The

unit is housed in a small RFI shielded enclosure and is supplied with an

AC power adapter and a Serial (RS-232) control cable for connecting to a

PC or other serial control device.

The device terminates all video inputs and buffers the output to protect

signal integrity. The Model AC506A can drive video cables to 150 feet or

more. The input and output connectors are all HD15 Female.

There are several ways to control the AC506A. There are 4 buttons on the

front of the AC506A, each corresponding to a VGA input signal and there

is a serial port on the back of the AC506A. The serial port is used to

control the AC506A via a hyper terminal application on a PC. The unit

features Auto and Scan modes that can be invoked either from front panel

or by serial commands as well.

1.2 Features

qCan be controlled manually, via Serial port, or automatically

based on video

qOutput can be blanked

qUser assigned priorities in Auto mode

qInfinite switching cycle life

qCan drive long cables

qTerminates input signals and buffers the output for best

integrity

qIncludes power adapter and serial cables for control

AC506A

2. Installation

1. Plug in the desired number of VGA sources to the VGA inputs on

the back of the AC506A.

2. Connect an output device to the VGA output on the back of the

AC506A.

3. Connect the included RS-232 cable to a PC if so desired.

4. Connect the included power supply.

5. Power on the included power supply

Plug-and-Play

DDC (Direct Data Channel) is a standard by which a compatible

monitor sends its identification and other parameters to a PnP

operating system such as Windows XP etc. The AC506A does not

switch the PNP signal lines to the PC. This means that, in some

instances, you may have to select a new monitor or video settings on

your PC. Also notice that most Notebook PC's have a special function

key to activate the external video output connector

Figure 2.1

4x1 Compact VGA Switch

3. Configuration & Operation

3.1 Modes of Operation

Auto Mode -This will select the VGA input with the highest priority

that has an active VGA signal.

Scan Mode -Will select each active VGA signal for a specified

number of seconds, 1-60, and then switch to the next active VGA input.

The AC506A can also be configured to scan the non-active VGA inputs as

well as the active VGA inputs.

Normal Mode -VGA inputs are selected based on front panel push-

button selections.

The AC506A can only be in one of these modes at a time. You can specify

mode of operation either from the Serial port or from the front panel (by

pressing switch combinations simultaneously).

The Switch retains the last mode that it was in after power off and upon

power up, will enter the last mode that it was in.

3.2 Front-Panel Switches

The first function of the front panel buttons is to switch from one VGA

signal to another. Just press the button and the VGA signal you selected

will be displayed. If there is no VGA signal to be displayed then you will

see a black screen. The AC506A will enter Normal Mode any time a

single front panel button is pressed.

The second use of the front panel buttons is to put the AC506A into Auto

Mode. Press buttons 1 and 2 simultaneously and the AC506A will enter

Auto Mode.

The third use of the front panel buttons is to put the AC506A into Scan

Mode. Press buttons 3 and 4 simultaneously and the AC506A will enter

Scan Mode. The time interval between switching will be the time interval

last specified via the serial port. If no interval has been specified then the

default is 5 seconds. Whether or not to scan non-active VGA inputs along

AC506A

--------------

M E N U

--------------

1 = #1 Input

2 = #2 Input

3 = #3 Input

4 = #4 Input

a = Auto Mode

s = Scan Mode

b = Blank

u = Un-Blank

p = Priorities

r = Reset

with active VGA inputs will be determined from the last user input via

serial port as well. If there has been no user input, the default is to not scan

the non-active VGA inputs.

3.3 RS-232 control via Hyper Terminal

To use the RS-232 control interface, start Hyper Terminal with the

following settings:

Baud rate: 4800

Data Bits: 8

Parity: None

Stop Bits: 1

Flow Control: None

This is what the menu will look like in Hyper Terminal..

By pressing the number keys, "1", "2", "3", "4", the AC506A will switch

to that VGA input. This will also put the AC506A into Normal Mode.

Pressing "a" will put the AC506A into Auto Mode.

Pressing "s" will put the AC506A into Scan Mode. Before the AC506A

enters Scan Mode, you will be asked 2 questions. The first question will

be "Seconds between switching? (1-60)". To this question, you must input

a number between 1 and 60 then press enter. Any other input will cause

this question to be repeated. The second question will be, "Scan non-

Figure 3.1

4x1 Compact VGA Switch

active? (y/n)" You must answer this question with a "y" or a "n". Any

other input will result in this question being repeated.

Pressing "b" will blank all output from the AC506A until the un-blank

command is received.

Pressing "u" will un-blank the output from the AC506A if it was

previously blanked.

Pressing "p" will allow the user to input the priorities of each VGA input.

The user will be shown what the priority of each VGA input is and then

given the opportunity to change the priority. Priority can range from 1 to

4, 1 being the highest priority and 4 being the lowest priority. The user can

also press enter and the existing priority will be kept. The existing priority

will also be kept if the user enters a "0".

Pressing "r" will reset the AC506A with the factory defaults. The factory

defaults are Normal Mode, all priorities are 1, and the time interval

between scanning is 5 seconds.

4. Troubleshooting

1. Fuzzy, blurry, or ghosting image

The VGA cables must be of high quality multi-coaxial construction. If you

are using long video cables in excess of 100 feet, the losses in the cable

could be a contributing factor, in which case, first reduce the refresh rate

to 60 HZ and if that is not enough, you may have to reduce the resolution

of the incoming video signal.

2. 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.

3. Substituting power supplies

The AC506A relies on the power adapter that it comes with. Do not

substitute any other power supply or DC power source.

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