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AUGUST 2002
SC120A-R2
SC121A
2 x 2 SCSI Matrix 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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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. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in
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2 X 2 SCSI MATRIX SWITCH 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.
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NOM STATEMENT 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 ext
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2 X 2 SCSI MATRIX SWITCH TRADEMARKS USED IN THIS MANUAL BLACK BOX and the logo are registered trademarks of Black Box Corporation. Microsoft, Windows, and Windows NT are registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. UL is a registered trademark of Underwriters Laboratories Incorporated. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. 4
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TABLE OF CONTENTS Contents Chapter Page 1. Specifications ..........................................................................................................7 2. Introduction ..........................................................................................................10 2.1 About the SCSI Switch ..................................................................................10 2.2 Features .....................................................................................
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2 X 2 SCSI MATRIX SWITCH Chapter Page 5. Configuration and Operation (continued) 5.8 Graphical User Interface (GUI) ................................................................33 5.9 Connecting Multiple SCSI Switches ..........................................................34 5.10 Typical Application......................................................................................34 5.11 Network Control of SCSI Switch ................................................................35 5.
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CHAPTER 1: Specifications 1. Specifications SCSI Interface Maximum Port Switching Delay: 3 ns Maximum Signal Skew: 2 ns Internal Terminator Power: 1 amp Rear-Panel Connectors: 68-pin high-density SCSI-1, SCSI-2, and SCSI-3 (also Ultra160 SCSI [“Ultra3 SCSI”] for SC120A-R2), SPI-2 compatible; asynchronous and synchronous compatible; conforms to ANSI X3.131 and X3T9.2 Single-Ended (SE) SCSI (SC120A-R2 Only) Maximum Data Rate (8-bit Narrow): 20 MBps Maximum Data Rate (16-bit Wide): 40 MBps Maximum
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2 X 2 SCSI MATRIX SWITCH Low-Voltage Differential (LVD) SCSI (SC120A-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.) Internal Terminator Impedance: 105 ohms Terminator Disconnect Capacitance: 3 pF Active Internal Bus Termination Serial Interface Baud Rate: 9600 or 19,200 bps Data Format: No parity, 8 bits, 1 stop b
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CHAPTER 1: Specifications Physical Temperature: 32 F to 149°F (0 to 65°C) Humidity: Up to 90% relative humidity, noncondensing Power: 95 to 260 VAC ± 10% (25 watts) Size: 4.5"H x 11.3" W x 9.7"D (11.4 x 28.7 x 24.6 cm) Weight: 5.1 lb. (2.3 kg) 9
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2 X 2 SCSI MATRIX SWITCH 2. Introduction 2.1 About the SCSI Switch The 2 x 2 SCSI Matrix Switch is a high-performance electronic crosspoint switch for use with the SCSI (Small Computer System Interface) bus. This product enables two independent SCSI buses to be selected and electrically connected in any combination via internal electronic switching circuits. The 2 x 2 SCSI Matrix Switch eliminates the need to swap and reconfigure SCSI cables and bus terminators when alternate system configuratio
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CHAPTER 2: Introduction 2.2.1 LCD PANEL The 2 x 2 SCSI Matrix 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 FRONT-PANEL CONTROLS • Set and configure SCSI ports. • Set termination. • Set switch number. • View power-supply status. • View internal temperature. • Set internal-temperature alarm. • Set serial-port configuration. • Display SCSI-bus busy status. • Display por
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2 X 2 SCSI MATRIX SWITCH 2.3.2 GENERAL HARDWARE DESCRIPTION The 2 x 2 SCSI Matrix Switch’s rear panel identifies each of the independent SCSI ports. SCSI ports A and B have two daisychained connectors per port and SCSI ports 1 and 2 have single connectors for installation of SCSI devices. You can install the SCSI Switch at any point on the SCSI bus. Each port has internal termination that can be turned on or off from the LCD panel. External “terminator power” (TERMPWR) for devices and terminator
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CHAPTER 2: Introduction SCSI Switch Ports Figure 2-1. SC121A block diagram. Figure 2-2. SC120A-R2 block diagram. 13
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2 X 2 SCSI MATRIX SWITCH SCSI Switch (SC120A-R2) Figure 2-3. Typical switch installation. 14
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CHAPTER 3: Installation 3. Installation 3.1 What’s Included • (1) 2 x 2 SCSI Matrix Switch • (1) AC power cord • (1) 10-ft. (3-m) DB9-male-to-DB9-female RS-232 cable • (1) DB9-male-to-DB25-female RS-232 adapter • (1) SCSI Matrix Switch control software CD-ROM • 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 95 and 260 volts. Unless otherwise specified, the switch will be shi
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2 X 2 SCSI MATRIX SWITCH 3.5 SCSI Interface Cabling Both versions of the 2 x 2 SCSI Matrix Switch have 68-pin high-density connectors. Single-ended devices can have cable lengths up to 20 ft. (6 m). Differential or low- voltage differential (LVD) devices can be connected with up to 82 ft. (25 m) of cable. Connect the host adapter or peripheral to the rear-panel connector using a proper SCSI cable. Section 6.1 describes standard SCSI-interface requirements. When you connect devices to ports A and
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CHAPTER 4: Operator Controls and Indicators 4. Operator Controls and Indicators 4.1 AC Power Switch The AC power switch is located on the SCSI Switch’s rear panel. Move it to the “|” position to turn on the switch. NOTE Always turn on the SCSI Switch before powering SCSI devices and computers. This will ensure that devices are found when the system boots up. 4.2 LCD Display, Keypad, and Indicators 4.2.1 LCD DISPLAY The LCD display shows the selection parameters available. SET PORTS > SET TERMINA
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2 X 2 SCSI MATRIX SWITCH 4.2.2 KEYPAD 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. • UP, DOWN, RIGHT, LEFT Arrows: Scrolls the cursor to enable menu selection. 4.2.3 INDICATORS The indicators provide SCSI Switch status information. • POWER: Indicates that the SCSI Switch is powered. • BUSY: Indicates that there is SCSI activity on one or more SCSI ports. •
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CHAPTER 4: Operator Controls and Indicators DISPLAY PORTS DISPLAY PORTS | A 1 | A 2 | | B 1 | B 2 | SET SERIAL PORTS SET SERIAL PORTS COM 1 9600 * 19200 COM 2 9600 * 19200 DAISYCHAIN Y * N SET SWITCH NUMBER SET SWITCH NUMBER 01 USE UP/DOWN KEYS DISPLAY POWER, TEMPERATURE DISPLAY POWER, TEMP PWR SUPPLY GOOD +25.5°C 19
