Black Box SW487A-R2 User Manual
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Black Box SW487A-R2 User Manual

Black Box SW487A-R2 User Manual

6 x 4 electronic scsi switch
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AUGUST 2002
SW485A
SW487A-R2
6 x 4 Electronic SCSI Switch
CUSTOMER
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
SUPPORT
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
INFORMATION
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com

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Summary of Contents for Black Box SW487A-R2

  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...

  • Page 2: European Union Declaration Of Conformity

    FCC/IC RFI STATEMENTS, EU DECLARATION OF CONFORMITY 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.

  • Page 3: Instrucciones De Seguridad

    6 x 4 ELECTRONIC SCSI SWITCH NORMAS OFICIALES MEXICANAS (NOM) 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 4 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.

  • Page 5: Trademarks Used In This Manual

    UL is a registered trademark of Underwriters Laboratories Incorporated. UNIX is a registered trademark of UNIX System Laboratories, Inc. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. logo are registered trademarks of Black Box Corporation.

  • Page 6: Table Of Contents

    5.2 Internal Terminator Selection ...23 5.3 Selecting Internal Terminator Power ...24 5.4 Selecting External Terminator Power ...24 5.5 Serial-Port Pinout ...25 5.6 LAN/Serial Port Commands ...26 5.7 ASCII Character Reference for SCSI Switch Box Selection...32 Contents TABLE OF CONTENTS Page...

  • Page 7: Chapter Page

    6.1.3 SCSI-3 ...38 6.1.4 Signal Wiring ...38 6.1.5 Common Problems ...39 6.1.6 Passive Terminators ...39 6.1.7 Active Terminators...39 6.2 SCSI Installation Tips ...39 6.3 SCSI Interface Signal Descriptions ...40 7. Troubleshooting...47 7.1 Calling Black Box ...47 7.2 Shipping and Packaging ...47 Page...

  • Page 8: Specifications

    Internal Terminator Power: 1 amp Rear-Panel Connectors: 68-pin high-density SCSI-1, SCSI-2, & SCSI-3, SPI-2 compatible (also Ultra160 SCSI [“Ultra3 SCSI”] for SW487A-R2); asynchronous and synchronous compatible; conforms to ANSI X3.131 and X3T9.2 Single-Ended (SE) SCSI (SW487A-R2 Only) Maximum Data Rate (8-bit Narrow): 20 MBps Maximum Data Rate (16-bit Wide): 40 MBps Maximum Port Cable Length: 6 meters (20 ft.)
  • Page 9 6 x 4 ELECTRONIC SCSI SWITCH Low-Voltage Differential (LVD) SCSI (SW487A-R2 Only) Maximum Data Rate (8-bit Narrow): 40 MBps for Ultra2 SCSI (narrow transfers aren’t officially supported in the Ultra160 SCSI standard) Maximum Data Rate (16-bit Wide): 160 MBps Maximum Port Cable Length: 25 meters (82 ft.)
  • Page 10 CHAPTER 1: Specifications Physical Temperature: 32 to 149°F (0 to 65°C) Humidity: Up to 90% noncondensing Power: 105 to 240 VAC ± 10% (25 watts) Size: 3.5"H x 16.8"W x 12"D (8.9 x 42.7 x 30.5 cm) Weight: 5 lb. (2.3 kg)

  • Page 11: Introduction

    Up to thirty-two 6 x 4 Electronic SCSI Switches can be connected together and controlled by one serial port. 2.2 Features • Ultra2, Ultra, and Fast SCSI compatible. SW487A-R2 is Ultra160 SCSI (a.k.a. “Ultra3 SCSI”) compatible. • 80-MBps or (SC487A-R2 only) 160-MBps throughput.

  • Page 12: Lcd Panel

    2.2.1 LCD P ANEL The 6 x 4 Electronic SCSI Switch features an easy-to-use, menu-driven LCD panel with soft-touch MENU, ENTER, and directional keys. The LCD is lighted, which allows for easy viewing and operation. 2.2.2 F RONT ANEL ONTROLS •...

  • Page 13: General Hardware Description

    OMPATIBILITY The SCSI Switch supports Ultra2 SCSI, 80-MBps (wide) SCSI host adapters, computers, and peripherals in asynchronous and synchronous mode. (SW487A-R2 also supports Ultra160 SCSI, 160-MBps devices.) The SCSI Switch conforms to ANSI X3.131 and X3T9.2 specifications for single-ended devices. Disconnect and reselect functions are fully supported to ensure complete SCSI compatibility.
  • Page 14 CHAPTER 2: Introduction You can selectively enable or disable any internal terminator to meet system configurations and requirements. SCSI Switch Ports Figure 2-1. Electronic SCSI Switch block diagram.
  • Page 15 6 x 4 ELECTRONIC SCSI SWITCH SCSI Switch (SW487A-R2) Figure 2-2. Typical switch installation.

  • Page 16: Installation

    • Rackmount handles and screws • Bottom feet • This users’ manual If anything is missing or damaged, call Black Box at 724-746-5500. 3.2 AC Line Voltage You can connect the SCSI Switch to any AC input voltage between 105 and 240 volts.

  • Page 17: Scsi Interface Cabling

    DB9 male-to-female serial cable (such as the one provided with the SCSI Switch) to connect it to the DB9 male serial ports on a PC. Pins 1, 2, 3, 5, and 6 (CD, TD, RD, SGND, and DSR respectively) are functional on the SCSI Switch’s RS-232 port;...

  • Page 18: Operator Controls And Indicators

    4. Operator Controls and 4.1 AC Power Switch The AC power switch is located on the Switch’s rear panel. Move it to the “|” position to turn on the SCSI Switch. Always turn on the SCSI Switch before powering SCSI devices and computers.

  • Page 19: Keypad

    6 x 4 ELECTRONIC SCSI SWITCH 4.2.2 K EYPAD Use the keypad to select menu and setup parameters for the SCSI Switch. • MENU: Returns to the SCSI Switch setup and configuration menu. • ENTER: Selects the highlighted setup parameter.

  • Page 20: Lcd Display Control Menus

    4.3 LCD Display Control Menus SET PORTS SET PORTS SET TERMINATION SET TERMINATION DISPLAY PORTS DISPLAY PORTS CHAPTER 4: Operator Controls and Indicators...
  • Page 21 6 x 4 ELECTRONIC SCSI SWITCH SET SERIAL PORTS SET SERIAL PORTS COM 1 COM 2 DAISY CHAIN Y * SET SWITCH NUMBER SET SWITCH NUMBER USE UP/DOWN KEYS DISPLAY POWER TEMPERATURE DISPLAY POWER TEMP PWR SUPPLY GOOD +25.5°C SET TEMP LIMIT SET TEMP LIMIT MAX +40°C...

  • Page 22: Display Activity

    • “LAN” at bottom right indicates that the LAN port is active. CHAPTER 4: Operator Controls and Indicators FRONT PANEL UNLOCKED ENTER PASSWORD TO LOCK 0 0 0 0 BLACK BOX SW485A S/N 2 1 0 0 3 0 3 L A N...

  • Page 23: Scsi Switch Port Configuration

    6 x 4 ELECTRONIC SCSI SWITCH 4.4 SCSI Switch Port Configuration The 6 x 4 Electronic SCSI Switch has an internal memory device that retains the current configuration and setup information. Switch port, termination, serial port, and control parameters are saved as they are entered on the front panel.

  • Page 24: Configuration And Operation

    5. Configuration and Operation 5.1 SCSI Cable Interface Requirements The 6 x 4 Electronic SCSI Switch can be installed at any point on the SCSI bus. Always use high-quality cables for optimum computer performance and reliability. The SW485A differential switch contains 68-pin high-density connectors for up to 80-MB-per-second wide Ultra SCSI and Ultra2 SCSI computers and peripherals.

  • Page 25: Selecting Internal Terminator Power

    The SCSI Switch can supply external terminator power via an internal resettable fuse. This fuse supplies 1 amp at 5 volts to the TERMPWR signal. The SCSI Switch contains internal protection and will not be affected if other SCSI devices provide terminator power.

  • Page 26: Serial-Port Pinout

    5.5 Serial-Port Pinout The 6 x 4 Electronic SCSI Switch has two RS-232 serial ports, using female DB9 connectors, which allow external control of the switch. The connectors are compatible with standard RS-232 modem cables. The serial ports can be configured to operate separate communications ports or as daisychained ports.

  • Page 27: Lan/Serial Port Commands

    (format): a. Start sequence: ASCII <cr> (carriage return) followed by two slashes (“//”) b. Switch box number (you need this even if you have only one SCSI Switch): Box 1 - 7C hex (ASCII “|”) Box 2 - 7D hex (ASCII “}”)
  • Page 28 Table 5-4. SCSI Switch commands. Command Select Port Report Port Status Select Terminator Report Terminator Status Lock Front Panel Unlock Front Panel Report Model, S/N, and Date of Manufacture Report Alarm Status Report Temperature Report Performance Report SCSI-Bus Inactivity Yank on SCSI Reset...
  • Page 29 6 x 4 ELECTRONIC SCSI SWITCH Table 5-4 (continued). SCSI Switch commands. Command Enable/Disable Alarm Set Baud Rate Set Serial-Port Mode Set Switch Number Set Lock/Unlock Password Set Temperature Limit Report Revision Lock Serial Ports Unlock Serial Ports Report Serial-Port Lock Status Cmd.
  • Page 30 Unlock Front Panel example command: <cr>//|U<cr> report: none g. Report Model, Serial Number, and Date of Manufacture: example command: <cr>//|?<cr> example report: //|SW487A-R2 202801150 10-15-02 SW487A-R2 20281150 = serial number 10-15-02 = date of manufacture (mm-dd-yy) h. Report Alarm Status: example command: <cr>//|a<cr>...
  • Page 31 6 x 4 ELECTRONIC SCSI SWITCH i. Report Temperature: example command: <cr>//|t<cr> example report: //|t+19.5 +19.5 = +19.5˚C, +67˚F j. Report SCSI-Bus Performance: example command: <cr>//|P<cr> report format: //|P<aabbccdd112233445566<cr> For ports A through D and 1 through 6 respectively, aa through dd...
  • Page 32 Set Temperature Limit: example command: <cr>//|OT<cr> xx: ASCII 2-digit decimal number from 15 to 55 (degrees C) report: none s. Report Revision of SCSI Switch’s Firmware: example command: <cr>//|R<cr> example report: 2059722 t. Lock Serial Ports: example command: <cr>//|OLxxxx<cr>...

  • Page 33: Ascii Character Reference For Scsi Switch Box Selection

    Switch # ASCII Switch # ASCII 5.8 Graphical User Interface (GUI) Your SCSI Switch is supplied with control software that is compatible with most recent Microsoft ® Windows switch. Follow instructions on the included CD-ROM to install the software. Figure 5-3. The control software’s GUI.

  • Page 34: Connecting Multiple Scsi Switches

    Up to thirty-two SCSI Switches can be controlled by a single RS-232 serial interface. To operate in this configuration, set the serial ports to operate in daisychained mode. In Figure 5-6, “1” is RS-232 port 1 on each switch and “2” is RS-232 port 2. SCSI Switch Box 1 Figure 5-4.

  • Page 35: Typical Applications

    6 x 4 ELECTRONIC SCSI SWITCH Make sure that mounting the SCSI Switch in a rack does not cause a hazardous condition because of uneven mechanical loading. Make sure that adding the switch doesn’t overload the rack’s power circuit. Make sure the power connections of the switch and the other equipment in your rack are properly grounded.

  • Page 36: Network Control Of Scsi Switch

    CHAPTER 5: Configuration and Operation 5.12 Network Control of SCSI Switch The 6 x 4 Electronic SCSI Matrix Switch may be controlled over a TCP/IP network through its LAN port. 5.12.1 LAN-P ONFIGURATION You can remotely control the SCSI Switch through a standard 10-Mbps Ethernet connection running TCP/IP.

  • Page 37: Cfgswitch Utility

    You can search for the IP address by clicking the search button in the “Configure Black Box Network Switch.” This will bring up a “Search For Black Box Network Switches” window. Enter a beginning IP address, an ending IP address, and click Search.

  • Page 38: Apconcmd Utility

    /b <baud rate> = The baud rate of the COM port (2400, 9600, or 19200 [bps]; default = 9600). /n <Switch number> = The number of the SCSI Switch to change (1 to 32; default = 1). /h <holdoff> = SCSI-bus holdoff, in seconds. The SCSI Switch will not change the switch settings on a bus until there has been no activity for the specified number of seconds.

  • Page 39: Scsi Technical Information

    6 x 4 ELECTRONIC SCSI SWITCH 6. SCSI Technical Information 6.1 SCSI Basics 6.1.1 SCSI-1 The original specification supports data transfers up to 5 MB per second on an 8-bit wide parallel data bus. SCSI-1 standards had some incompatibility problems between host adapters and peripheral devices.

  • Page 40: Common Problems

    6.1.5 C OMMON ROBLEMS The majority of problems encountered with SCSI-bus installations are due to unbalanced or improper impedances on the SCSI-bus transmission cables caused by varying manufacturers’ peripheral devices. SCSI terminators compensate for these inherent impedance mismatches on a SCSI bus where peripheral devices such as hard drives, CD-ROM drives, scanners, or printers are used.

  • Page 41: Scsi Interface Signal Descriptions

    6 x 4 ELECTRONIC SCSI SWITCH • If the last device on the chain has two SCSI connectors, attach the cable to one and a terminator to the other. Otherwise you’ll have an open connector that may cause noise on the SCSI chain.
  • Page 42 has the highest priority during the Arbitration phase. Bit number, significance, and priority decrease downward to DB0. A data bit is defined as a one when the signal value is true and as a zero when the signal value is false. Data parity DBP and DBP1 shall be odd.
  • Page 43 6 x 4 ELECTRONIC SCSI SWITCH Table 6-1 (continued). SCSI connector assignments for single-ended (SE) 16-bit SCSI (wide). Signal Name GROUND GROUND GROUND GROUND GROUND GROUND Table 6-2. SCSI connector assignments for Signal Name +DB(12) +DB(13) +DB(14) +DB(15) +DB(P1) GROUND...
  • Page 44 Table 6-2 (continued). SCSI connector assignments for differential 16-bit SCSI (wide). Signal Connector Name Pin Number +BSY +ACK +RST +MSG +SEL +C/D +REQ +I/O GROUND +DB(8) +DB(9) +DB(10) +DB(11) Table 6-3. SCSI connector assignments for low-voltage differential (LVD) 16-bit SCSI (wide). Signal Connector Name...
  • Page 45 6 x 4 ELECTRONIC SCSI SWITCH Table 6-3 (continued). SCSI connector assignments for low-voltage differential (LVD) 16-bit SCSI (wide). Signal Name +DB(P) GROUND DIFFSENS TERMPWR TERMPWR RESERVED GROUND +ATN GROUND +BSY +ACK +RST +MSG +SEL +C/D +REQ +I/O +DB(8) +DB(9)
  • Page 46 Table 6-4. SCSI speed support map. STA Term Maximum Bus Length (M) SCSI-1 Fast SCSI Fast Wide SCSI Ultra SCSI Ultra SCSI Wide Ultra SCSI — Wide Ultra SCSI Wide Ultra SCSI Ultra2 SCSI Ultra2 SCSI Wide Ultra2 SCSI Wide Ultra2 SCSI CHAPTER 6: SCSI Technical Information —...
  • Page 47 6 x 4 ELECTRONIC SCSI SWITCH To access jumper options: Remove the six screws on the bottom of the unit. Then lift off the cover. Figure 6-1. SCSI Switch component placement. • Internal termination jumper block: E1 through E8, E29, E30 (see Section 5.3).

  • Page 48: Troubleshooting

    • Package it carefully. We recommend that you use the original container. • If you are shipping the switch 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.

  • Page 49: Disclaimers And Notices

    6 x 4 ELECTRONIC SCSI SWITCH DISCLAIMERS AND NOTICES The manufacturer specifically disclaims the implied warranties for this product of merchantability and fitness for a particular purpose. Some states and provinces do not allow limitations on how long an implied warranty lasts, so the above limitation or exclusion might not apply to you.
  • Page 50 © Copyright 2002. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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