Black Box SW178A User's Manual
Contents
1. 2 Using an IEEE 1284 straight through DB25 M M cable connect your computers to the Autoswitch 3 Using an IEEE 1284 parallel cable connect your printer to the Autoswitch 4 Turn on the power to your Autoswitch computers and printers All computers will print to the printer on a first come first served basis Please print the README file on the diskette for Autoswitch software driver setup instructions COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 4 Peripheral Sharing and File Transfer Setup IEEE 1284 IEEE 1284 Printer Scanners 6000 Printers Scanners coD Zip Drive Camera Zip Drive Camara 9 zz E ra RNA 7 FA SW178A Setup X E Peripheral Sharing Two Computers AutoLink Mode File Transfer Mode ER 1284 cep IEEE 1284 cep rinters Printers Zip Drive Scanners Camera Zip Drive x Scanners Camera e XA Aa w Aa 7 Peripheral Sharing Computer attached to Port can AutoLink Mode only initiate File Transfer with Port B Computer attached to Port C can only initiate file transfer with Port D COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 4 1 Auto Link Mode The Autoswitch will cons2. BLACK BOX SEPTEMBER 1998 SW178A SW179A Compact Bidirectional Dual Bus Autoswitches 2to 2 4 to 2 pevice PA 9 pevice PP vewice vere nal jrectio 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 1018 Web site www blackbox com E mail info blackbox com COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES TRADEMARKS USED IN THIS MANUAL Centronics is a registered trademark of GENICOM Corporation DeskJet is a registered trademark of Hewlett Packard Zip is a registered trademark of Iomega Corporation Windows NT is a trademark and Windows is a registered trademark of Microsoft Corporation Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners COMPACT BIDIRECTIONA BUS AUTOSWITCHES 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 a
3. It contains no user serviceable parts Contact Black Box Technical 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 e 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 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 5 2 Shipping and Packaging If you need to transport or ship your Autoswitch e 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 Materials Authorization RMA number BLACK BOX Copyright 1999 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 e 724 746 5500 Fax 724 746 0746
4. MPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 5 Troubleshooting Check all the cables Use IEEE 1284 rated cables Check the computer BIOS Make sure that the BIOS parallel setup is set to EPP or EPP SPP mode for faster data transfer and bidirectional communication If you re working with portable drives the Autoswitch must be in Manual Mode when selecting the port where the portable drive is attached until the driver software recognizes and assigns a logical drive After the driver has been loaded you can put the Autoswitch back into Auto Link Mode Using the optional AC power adapter The Autoswitch is usually powered by the signal drawn from the computer and parallel device parallel ports However if the computer or the device fails to supply enough power to the Autoswitch a 9 VDC 500 mA power adapter can be used We recommend using the power adapter if you re connecting inkjet and DeskJet printers Adjust the timeout If you print long document files with graphics or use a printer spooler adjust the COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES timeout to a higher value This is because as the computer processes complex files it will pause more often If the pause is longer than the time out window the Autoswitch will assume that the transmission is over and prematurely finish the job 5 1 Calling Black Box If you determine that your Autoswitch is malfunctioning do not attempt to alter or repair the unit
5. al manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante En caso de existir una antena externa deber ser localizada lejos de las lineas de energia El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n Servicio por personal calificado deber ser provisto cuando A cable de poder o el contacto ha sido da ado u Objectos han ca do o l quido ha sido derramado dentro del aparato o aparato ha sido expuesto a la lluvia o D Elaparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 1 Specifications SW178A SW179A Autoswitch Device Output Ports 2 2 Autoswitch Computer Input Ports 2 4 Cable Type Required Computer to Autoswitch DB25 M M Device to Autoswitch DB25 M Centronics 36 M Maximum Cable Distance 5 m
6. ccordance with the specifications in Subpart J 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 pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de classe A prescrites dans le Reglement sur le brouillage radio lectrique publi par Industrie Canada COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado 2 Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura 3 Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas 4 Todas las i
7. eters Maximum Transfer Rate 2 megabytes second Number of Device LEDs 2 Computer Input Port LEDs 4 Input Output Port Selection Auto manual Timeout Selection 5 10 20 or 40 seconds File Transfer Software A B DOS Windows 3 1 95 98 Windows NT Size SW178A 7 H x 3 7 W 1 1 W 17 9 x 9 3 x 2 7 cm SW179A 7 3 H x 8 7 W x 14 W 18 5 x 9 3 x 2 7 cm Weight 7 oz 200 g 8 5 oz 240 g Operating Temperature 41 to 104 5 to 40 C Optional Power Adapter Certification 9 VDC 500 mA FCC CE 2 Introduction 2 1 Description The IEEE 1284 standard interface is found on most printers today It enables bidirectional communication between the PC and the printer allowing the printer to send information back to the host PC using its built in microprocessor The Compact Bidirectional Dual Bus Autoswitch supports full compatibility with IEEE 1284 including Centronics nibble special nibble byte Enhanced Parallel Port EPP and Extended Capabilities Port ECP The dual bus design allows simultaneous access of both devices to the attached computer It also features manual and auto channel port selection and works with DOS Windows 3 1 Windows 95 Windows 98 and Windows NT The Autoswitch supports IEEE 1284 parallel devices such as Zip drives scanners CD ROMs back up tapes digital CCD cameras exter
8. nal hard drives and Ethernet adapters COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 2 2 Function Descriptions 2 2 1 AUTO LINK MODE When powering the Autoswitch you will see the LEDs of the Computer Input Port circularly scanned from LED A to D The Printer Output Port LEDs will remain lit Your Autoswitch constantly scans its computer input ports looking for a job to send to one of its output ports You will see the input ports LEDs blink in sequence as the switch goes through its scan cycle Device Out Ports LED Indicator PA amp PB LED Remain Lit Auto Link Mode PA amp PB LED are Lit OFF File Transfer Mode 2 2 2 MANUAL MODE The Switch has two input push buttons labeled Device and Computer When you power on the switch the switch is in Auto Link Mode After you press the Computer button it is in manual setting mode Press the Computer button several times and you will see the LEDs light in order as the active selection moves from AutoScan to LED A B C and D Stop pressing the button when the LED lights for the computer input port COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES you want to set up You can press the Printer button several times to cycle through the three level of available choices PA PB or File Transfer Finish the cycle to go back to Auto Link Mode 2 2 3 FILE TRANSFER MODE Use the software selection utility to set up the Autoswitch to File Transfer Mode The SW179A dual bus permits only
9. nstrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc 3 El aparato el ctrico debe ser usado nicamente con carritos o pedestales 6 El to el ct deb d t t destal que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 9 El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n 10 11 12 13 14 16 17 18 AUTOSWITCHES El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato Precauci n debe ser tomada de t
10. tantly scan its input ports and send the job to the selected attached parallel device The cycle goes from Port A B C D then A again 4 2 Manual Mode The Autoswitch has a Select button for manual port selection Device or Computer When the Autoswitch is first powered on it s in Auto Link Mode After you press the Computer button it will be in Manual Mode Pressing the Computer button again will put the Autoswitch back in Auto Link Mode 4 3 Reset Mode Sometimes the Autoswitch might lose synchronization between the computers and parallel devices Your Autoswitch might have lost synchronization if you notice any of these problems e The Computer Input Port LEDs are not flashing alternately None of the computers can access the attached devices COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES One of the computers has been running parallel device software that locks the port all the time If you have any of these problems try resetting the Autoswitch to default mode 1 2 Turn off the Autoswitch Set DIP switch 1 to the ON position Turn on the Autoswitch then turn it off again Set DIP switch 1 to the OFF position Turn on the Autoswitch COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 4 4 Device Out Ports LED Indicator PA amp PB LED Remain Lit Auto Link Mode PA amp PB LED are Lit OFF File Transfer Mode 4 5 DIP Switch Settings Ux EN 105 CO
11. that the computer attached to Port A can do file transfer with the computer attached to Port B The same goes to Port C and Port D 2 2 4 SOFTWARE SELECTION See the README file on the driver disk for complete instruction This software driver will run an application in the background and will not do any modification to your system INI settings 2 3 Autoswitch Dual Bus Design The Autoswitch has two independent channels for the switch which provide simultaneous access of either device by any of the two attached computers If two PCs send their jobs simultaneously to two different ports the print job will be processed at the same time But if the COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES two PGs send their jobs to the same output port the first come first serve rule will follow 2 3 1 AN EXAMPLE OF SIMULTANEOUS OPERATION WITH THE SW178A NOTE PA is the print device on port PA PB is the print device on port PB Computer sends a printjob to PA and Computer sends a print job to PB Computer A and Computer B run the File Transfer Program 2 3 2 An EXAMPLE OF SIMULTANEOUS OPERATION WITH THE SW179A Computer A sends a print job to PA and Computer sends a print job to PB Computer A and Computer B run the File Transfer Program while Computer D sends a printjob to PA 3 Quick Start Listed below are four easy steps to set up your Autoswitch 1 Be sure to turn off the power to your computers and printers
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