Black Box Switch SW175A User Manual

FEBRUARY 1998  
SW175A  
SW176A  
Compact Bidirectional  
AutoSwitch  
B
A
POWER  
PRINTER  
MANUAL  
B
D
C
SELECT  
B
PINTER  
Compact Bi-directional  
Auto Switch  
RESET  
A
C
Compact Bi-directional  
Auto Switch  
D
A
CUSTOMER SUPPORT INFORMATION  
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)  
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
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 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 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.  
1
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
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.  
2
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
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.  
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.  
3
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
TRADEMARKS USED IN THIS MANUAL  
Centronics is a registered trademark of Centronics  
Corporation.  
DeskJet, Hewlett Packard, and LaserJet are registered  
trademarks of Hewlett-Packard.  
Windows is a registered trademark of Microsoft  
Corporation.  
Any other trademarks mentioned in this manual are  
acknowledged to be the property of the trademark owners.  
4
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Specifications  
SW175A  
SW176A  
No. of Computers  
Input Interface  
Input Port Selection  
Weight  
No. of Printers  
Max. Transfer Rate  
Output Interface  
Form Feed  
2
4
(2) DB25  
Auto  
0.25 lb. (0.1 kg) 0.5 lb. (0.2 kg)  
1
(4) DB25  
Auto/Manual  
2 MB per second  
(1) DB25  
Selectable  
Time-Out  
Operating Temp.  
5, 10, 20, or 40 seconds  
41 to 104°F (5 to 40°C)  
Compatible Printers:  
Hewlett Packard®  
LaserJet® 4P, 4Plus, 4LC, 4V, 4VC, 4MV, 4SiMX, 4MP, 4ML, 4Si, 5,  
5M, 5N, 5P, 5L, 5MP, 5Si, 5SiMX, 6P, 6MP  
DeskJet® 600, 600C, 660C, 820Cxi, 820Cse, 850C, 855C  
Canon®  
Laser 430W, 460W  
• Color BJC-610  
Okidata®  
Laser OL-600e (non Windows 95), OL-610  
Panasonic®  
Laser EPL-5600, EPL-5500  
• Color Stylus color IIs  
Lexmark™  
Laser 4039 10 Plus  
5
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Description  
The Compact Bidirectional AutoSwitch allows 2 or 4  
users to share one IEEE 1284 printer. The Switch  
also lets you control the printer remotely using the  
printer software (which is supplied with your  
printer). You can change printer settings, as well as  
receive printer messages like “printer busy,” “printer  
out of paper,” and “paper jam” directly from your  
computer.  
The Switch is compatible with Windows 3.x and  
Windows 95, is IEEE 1284 compliant, and supports  
®
IEEE 1284 Nibble, Centronics , Bi-Tronics, ECP,  
and EPP modes.  
6
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Installation  
Installation Procedure  
1. Turn off all computers and the printer.  
2. Set the DIP switches to the proper position  
according to the DIP-Switch Setting Chart (on  
the next page).  
3. Use the standard “straight-through” or IEEE 1284  
DB25 M/M cables to connect the computers to  
the AutoSwitch.  
4. Use an IEEE 1284 DB25/Centronics 36 printer  
cable to connect the AutoSwitch to the IEEE  
1284 printer.  
5. Turn on the computers and the printer. The  
computers are now ready to share the printer  
through the AutoSwitch.  
7
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
DIP-Switch Settings  
There are four DIP switches located at the side of the  
AutoSwitch. Switch 1 controls form feed, 2 and 3 set  
the the timeout length, and 4 is not used. The tables  
below show you the DIP-switch settings for enabling  
or disabling form feed, and for setting the time-out  
for 5, 10, 20, or 40 seconds.  
1
ON  
OFF  
FORM FEED  
ENABLE  
DISABLE  
2
3
TIME-OUT  
5 sec.  
10 sec.  
20 sec.  
40 sec.  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
OFF  
The Reset Button  
The RESET button resets the AutoSwitch if it locks  
up. Note that print jobs may be lost if the button is  
pressed during printing.  
8
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
The Power Adapter  
The AutoSwitch is usually powered by the signals  
drawn from computers and the printer. A power  
supply is not required under such conditions.  
However, if the peripherals are not able to supply  
enough power to the AutoSwitch, a 9-VDC, 500-mA  
power supply may be required to operate the switch  
properly.  
9
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Troubleshooting  
If Windows is used on the computer, set the time-  
®
out to 40 seconds. This will accommodate the longer  
time that Windows needs to request information  
from the printer. Also, if a large document or  
graphic is printed through the Switch, a longer time-  
out, such as 20 or 40 seconds, may be required for  
the Switch to operate properly.  
NOTE  
We recommend not running a DOS window  
from Windows 95.  
10  
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Calling Black Box  
If you determine that your AutoSwitch is  
malfunctioning, do not attempt to alter or repair the  
unit. It contains no user-serviceable parts. Contact  
Black Box 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.  
• when the problem occurs.  
• the components involved in the problem.  
• any particular application that, when used,  
appears to create the problem or make it worse.  
11  
 
COMPACT BIDIRECTIONAL AUTOSWITCH  
Shipping and Packaging  
If you need to transport or ship your AutoSwitch:  
• Package it carefully. We recommend that you  
use the original container.  
• If you are shipping the AutoSwitch for repair,  
make sure you include everything that came in  
the original package. Before you ship, contact  
Black Box to get a Return Authorization (RA)  
number.  
12  
 
© Copyright 1998. Black Box Corporation. All rights reserved.  
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746  
 

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