Black Box SW178A Owner's Manual
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Black Box SW178A Owner's Manual

Black Box SW178A Owner's Manual

Black box compact bidirectional dual bus autoswitches owner manual
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Compact Bidirectional
Dual Bus Autoswitches
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
2 to 2
4 to 2
SEPTEMBER 1998
SW178A
SW179A

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Summary of Contents for Black Box SW178A

  • Page 1 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...

  • Page 2: Trademarks Used In This Manual

    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.

  • Page 3: Federal Communications Commission

    COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES FEDERAL COMMUNICATIONS COMMISSION 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 J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference...

  • Page 4: Instrucciones De Seguridad

    COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 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.
  • Page 5 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 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.

  • Page 6: Specifications

    5, 10, 20, or 40 seconds A, B A–B, C–D DOS; Windows 3.1, 95, 98; Windows NT SW178A: 7"H x 3.7"W x 1.1"W (17.9 x 9.3 x 2.7 cm); SW179A: 7.3"H x 3.7"W x 1.1"W (18.5 x 9.3 x 2.7 cm) 7 oz. (200 g) 8.5 oz.
  • Page 7 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 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.
  • Page 8 PA & PB LED are Lit OFF 2.2.2 M ANUAL 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...

  • Page 9: File Transfer Mode

    .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...
  • Page 10 PCs send their jobs to the same output port, the first-come, first-serve rule will follow. 2.3.1 A XAMPLE OF SW178A PA is the print device on port PA. PB is the print device on port PB. Computer A sends a print job to PA and Computer B sends a print job to PB.

  • Page 11: Quick Start

    COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 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. 2. Using an IEEE 1284 straight-through DB25 M/M cable, connect your computers to the Autoswitch.
  • Page 12 Compact Bidirectional Dual Bus Autoswitch COMPUTER DEVICE Peripheral Sharing “AutoLink Mode” IEEE 1284 Printers Camera Zip Drive SW178A Setup Compact Bidirectional Dual Bus Autoswitch Two Computers “File Transfer Mode” IEEE 1284 Printers Zip Drive Compact Bidirectional Dual Bus Autoswitch SW179A Setup...
  • Page 13 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 4.1 Auto-Link Mode The Autoswitch will constantly 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).
  • Page 14 If you have any of these problems, try resetting the Autoswitch to default mode: 1. Turn off the Autoswitch. 2. Set DIP switch #1 to the ON position. 3. Turn on the Autoswitch, then turn it off again. 4. Set DIP switch #1 to the OFF position.
  • Page 15 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 4.4 Device Out Ports LED Indicator PA & PB LED Remain Lit PA & PB LED are Lit OFF 4.5 DIP-Switch Settings Auto-Link Mode File Transfer Mode...

  • Page 16: Troubleshooting

    COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 5. Troubleshooting 1. Check all the cables. Use IEEE 1284 rated cables. 2. 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. 3.
  • Page 17 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 Technical Support at 724-746-5500. Before you do, make a record of the history of the problem.
  • Page 18 COMPACT BIDIRECTIONAL DUAL BUS AUTOSWITCHES 5.2 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.
  • Page 19 © Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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