Black Box Switch AC506A User Manual

4x1 Compact VGA Switch  
Model AC506A  
March 2004  
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  
CUSTOMER  
SUPPORT  
INFORMATION  
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055  
 
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.  
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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.  
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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  
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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  
q Can be controlled manually, via Serial port, or automatically  
based on video  
q Output can be blanked  
q User assigned priorities in Auto mode  
q Infinite switching cycle life  
q Can drive long cables  
q Terminates input signals and buffers the output for best  
integrity  
q Includes power adapter and serial cables for control  
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AC506A  
2. Installation  
Figure 2.1  
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  
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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  
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AC506A  
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..  
--------------  
M E N U  
--------------  
1 = #1 Input  
2 = #2 Input  
Figure 3.1  
3 = #3 Input  
4 = #4 Input  
a = Auto Mode  
s = Scan Mode  
b = Blank  
u = Un-Blank  
p = Priorities  
r = Reset  
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-  
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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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AC506A  
Contacting Black Box  
If you determine that your extender 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.  
Shipping and Packaging  
If you need to transport or ship your extender:  
• Package it carefully. We recommend that you use the original  
container.  
• Before you ship the units back to Black Box Corporation for repair  
or return, contact us to get a Return Authorization (RA) number.  
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4x1 Compact VGA Switch  
5. Specifications  
Video Types VGA through UXGA, RGBHV  
Resolution  
Bandwidth  
Up to 1600 x 1200 at up to 85 Hz  
DC to 250 MHz  
Max. Distance Up to 150 ft. (50 m)  
Connectors  
Interfaces  
HD15 female for input and both outputs; 3.5 mm Serial  
Standard Analog VGA; EIA/ TIA RS-232 Serial  
Compliance CE; FCC Part 15 Subpart B Class A, IC Class  
Max. Altitude 10,000 ft. (3048 m)  
Temperature 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  
90,000 hours (calculated estimate)  
Power  
From utility-power (mains) outlet, through included  
external power adapter. Output Voltage: 6v DC regulated  
Center-Positive. Power :(2 watts Max)  
Size  
1.25” H x 2.75”W x 8.25” L (32 x 70 x 210 mm)  
2 lbs. or 0.8 Kg (shipping)  
Weight  
11  
 
AC506A  
12  
 
 
© Copyright 2004. Black Box Corporation..  
All rights reserved.  
1000 Park Drive  
Lawrence, PA 15055-1018  
724-746-5500  
Fax 724-746-0746  
 

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