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Black Box SC121A manual

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Table of contents for the manual

  • Page 1

    2 x 2 SCSI Matrix Switch AUGUST 2002 SC120A-R2 SC121A 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 Web site: ww[...]

  • Page 2

    1 FCC/IC RFI ST A TEMENTS, EU DECLARA TION OF CONFORMITY FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO-FREQUENCY INTERFERENCE ST A TEMENTS 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 int[...]

  • Page 3

    2 2 X 2 SCSI MA TRIX SWITCH NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY ST A TEMENT 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 adv[...]

  • Page 4

    3 NOM ST A TEMENT 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 s[...]

  • Page 5

    4 2 X 2 SCSI MA TRIX 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.[...]

  • Page 6

    5 T ABLE OF CONTENTS Contents Chapter Page 1. Specifications ..........................................................................................................7 2. Introduction ..........................................................................................................10 2.1 About the SCSI Switch ..............................[...]

  • Page 7

    6 2 X 2 SCSI MA TRIX 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 ........................................[...]

  • Page 8

    7 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; confor[...]

  • Page 9

    8 2 X 2 SCSI MA TRIX SWITCH Low-V oltage Differential (L VD) 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 ohm[...]

  • Page 10

    9 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)[...]

  • Page 11

    10 2 X 2 SCSI MA TRIX 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 switc[...]

  • Page 12

    11 CHAPTER 2: Introduction 2.2.1 LCD P ANEL 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 F RONT -P ANEL C ONTROLS • Set and configure SCSI ports. • Set termination. • Set switch number. • V[...]

  • Page 13

    12 2 X 2 SCSI MA TRIX SWITCH 2.3.2 G ENERAL H ARDWARE D ESCRIPTION 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[...]

  • Page 14

    13 CHAPTER 2: Introduction Figure 2-1. SC121A block diagram. Figure 2-2. SC120A-R2 block diagram. SCSI Switch Ports[...]

  • Page 15

    14 2 X 2 SCSI MA TRIX SWITCH Figure 2-3. T ypical switch installation. SCSI Switch (SC120A-R2)[...]

  • Page 16

    15 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[...]

  • Page 17

    16 2 X 2 SCSI MA TRIX 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 [...]

  • Page 18

    17 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 t[...]

  • Page 19

    18 2 X 2 SCSI MA TRIX 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. • UP, DOWN, RIGHT, LEFT Arrows: Scrolls the cursor to enable menu selection. 4.2.3 I NDICATORS The indicators prov[...]

  • Page 20

    19 CHAPTER 4: Operator Controls and Indicators DISPLAY PORTS SET SERIAL PORTS SET SWITCH NUMBER DISPLAY POWER, TEMPERATURE DISPLAY POWER, TEMP PWR SUPPLY GOOD +25.5°C SET SWITCH NUMBER 01 USE UP/DOWN KEYS SET SERIAL PORTS COM 1 9600 * 19200 COM 2 9600 * 19200 DAISYCHAIN Y * N DISPLAY PORTS | A 1 | A 2 | | B 1 | B 2 |[...]

  • Page 21

    20 2 X 2 SCSI MA TRIX SWITCH SET TEMP LIMIT DISPLAY BUS ACTIVITY FRONT PANEL LOCK DISPLAY VERSION In the DISPLAY VERSION panel: • “HVD,” “LVD,” or “SE” at bottom left indicates the current SCSI-bus interface mode. • “x” at top right indicates that the serial ports are locked. • “LAN” at bottom right indicates that the LAN [...]

  • Page 22

    21 CHAPTER 4: Operator Controls and Indicators 4.4 SCSI Switch Port Configuration The 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. 4.5 SCSI Switch Default Configuration The SCSI S[...]

  • Page 23

    22 2 X 2 SCSI MA TRIX SWITCH 5. Configuration and Operation 5.1 SCSI Cable Interface Requirements The 2 x 2 SCSI Matrix Switch can be installed at any point on the SCSI bus. Always use high-quality cables for optimum computer performance and reliability. The SC121A differential switch contains 68-pin high-density connectors for up to 80-MB-per-seco[...]

  • Page 24

    23 CHAPTER 5: Configuration and Operation SC120A-R2 T ERMINATION C ONFIGURATION Internal termination on Logic Component is always on by default and is not settable at the point of the logic components (see Figure 5-1). To ensure proper termination when configuring the switch termination, always have the termination enabled at the specified alphanum[...]

  • Page 25

    24 2 X 2 SCSI MA TRIX SWITCH Figure 5-2. SC120A-R2 ter mination example 1. Figure 5-3. SC120A-R2 ter mination example 2.[...]

  • Page 26

    25 CHAPTER 5: Configuration and Operation 5.3 Selecting Internal T erminator Power On-board SCSI Switch terminators can be powered by internal 5-volt power or externally from SCSI-bus “terminator power” (TERMPWR). Figure 5-4. Inter nal ter minator-power jumpers. T able 5-1. Jumper settings for inter nal ter mination. SC120A-R2 SC121A E14-Port A[...]

  • Page 27

    26 2 X 2 SCSI MA TRIX SWITCH T able 5-2. Jumper settings for exter nal ter mination. SC120A-R2 SC121A E6-Port A E22-Port 1 E19-Port A E17-Port 1 E5-Port B E21-Port 2 E20-Port B E18-Port 2 NOTE The standard factory default connects internal terminators to internal 5 volts. 5.5 Serial-Port Pinout The SCSI Switch contains two RS-232 serial ports, usin[...]

  • Page 28

    27 CHAPTER 5: Configuration and Operation 5.6 LAN/Serial-Port Commands You can use simple ASCII-character commands to control the SCSI Switch through either its LAN port (by opening a socket connection to port 3001) or one of its RS-232 serial ports. For serial control, set your computer’s serial port this way: a. Baud rate: 9600 (the switch’s [...]

  • Page 29

    28 2 X 2 SCSI MA TRIX SWITCH T able 5-4. SCSI Switch commands. Command Cmd. Example Example Result or Char . Command String Response Select Port K <cr>//|A1K<cr> A & 1 connected Report Port Status S <cr>//|S<cr> “//|a2b0K” Select Terminator k <cr>//|A1k<cr> A & 1 terminated Report Terminator Status s [...]

  • Page 30

    29 CHAPTER 5: Configuration and Operation T able 5-4 (continued). SCSI Switch commands. Command Cmd. Example Example Result or Chars. Command String Response Enable/Disable Alarm OA <cr>//|OA0<cr> Alarm enabled Set Baud Rate OB <cr>//|OB10<cr> COM2 = 9600 bps Set Serial Port Mode OC <cr>//|OC0<cr> Daisychain enab[...]

  • Page 31

    30 2 X 2 SCSI MA TRIX SWITCH E XPANDED L IST OF C OMMANDS a. Select SCSI Port Matrix: example command: <cr>//|A1B2K<cr> report: none NOTE K - Connects specified ports, but also breaks former connections and maintains proper termination as per SCSI rules. N - Connects specified ports without regard for former connections or termination. [...]

  • Page 32

    31 CHAPTER 5: Configuration and Operation 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<aabb1122><cr> For ports A, B, 1, and 2 respectively, aa, bb, 11, and 22 = ASCII repr[...]

  • Page 33

    32 2 X 2 SCSI MA TRIX SWITCH p. Set Switch ( Device ) Number: example command: <cr>//|ODxx<cr> xx = ASCII representation of decimal value from 01 through 32 report: none q. Set “Lock/Unlock Front Panel ” Password: example command: <cr>//|OPxxxx<cr> xxxx: ASCII 4-digit decimal number from 0000 to 9999 report: none r. Set [...]

  • Page 34

    33 CHAPTER 5: Configuration and Operation 5.7 ASCII Character Reference for SCSI Switch Box Selection Switch # 12345678 ASCII | } ~ <DEL> ` a b c Switch # 9 10 11 12 13 14 15 16 ASCII d e f g h i j k Switch # 17 18 19 20 21 22 23 24 ASCII l m nopqr s Switch # 25 26 27 28 29 30 31 32 ASCII t u v w xyz{ 5.8 Graphical User Interface (GUI) Your S[...]

  • Page 35

    34 2 X 2 SCSI MA TRIX SWITCH 5.9 Connecting Multiple SCSI Switches Up to 32 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 5-7, “1” is RS-232 port 1 on each switch and “2” is RS-232 port 2. Figure 5-7. Multiple SCSI Switch[...]

  • Page 36

    35 CHAPTER 5: Configuration and Operation 5.11 Network Control of SCSI Switch The 2 x 2 SCSI Matrix Switch may be controlled over a TCP/IP network through its LAN port. 5.11.1 LAN-P ORT C ONFIGURATION You can remotely control the SCSI Switch through a standard 10-Mbps Ethernet connection running TCP/IP. In the SCSI Switch’s factory-default settin[...]

  • Page 37

    36 2 X 2 SCSI MA TRIX SWITCH 5.11.2 A PCONCFG U TILITY The apconcfg.exe utility is used to configure the TCP/IP address. This utility is provided on the included CD-ROM. You can reconfigure the IP address by using the IP Configuration Utility. Run apconcfg.exe from the CD-ROM provided with your 2 x 2 SCSI Matrix Switch. A “Configure Network Switc[...]

  • Page 38

    37 CHAPTER 5: Configuration and Operation 5.11.3 A PCONCMD U TILITY The apconcmd.exe utility enables the user to set switch parameters through the LAN port. This utility is located on the CD-ROM provided with your SCSI Switch. To change switch settings and termination for an SCSI Switch, run (at a DOS prompt) APCONCMD.EXE from the CD-ROM. Usage: ap[...]

  • Page 39

    38 2 X 2 SCSI MA TRIX SWITCH 6. SCSI T echnical Information 6.1 SCSI Basics 6.1.1 SCSI-1 The original specification supports data transfers up to 5 MBps on an 8-bit wide parallel data bus. SCSI-1 standards had some incompatibility problems between host adapters and peripheral devices. The need to improve compatibility, increase transfer rates, and [...]

  • Page 40

    39 CHAPTER 6: SCSI T echnical Information 6.1.5 C OMMON P 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 w[...]

  • Page 41

    40 2 X 2 SCSI MA TRIX 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. • Always turn off the power to your computer and SCSI devices before swapping cables or moving devices around. SCSI cabl[...]

  • Page 42

    41 CHAPTER 6: SCSI T echnical Information • DB0 through DB15, P, P1 (DATA BUS) : Sixteen data-bit signals and two parity- bit signals that together form a data bus. DB15 is the most significant bit and has the highest priority during the Arbitration phase. Bit number, significance, and priority decrease downward to DB0. A data bit is defined as a[...]

  • Page 43

    42 2 X 2 SCSI MA TRIX SWITCH T able 6-1 (continued). SCSI connector assignments for single-ended (SE) 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number Ground 15 Ground 49 Ground 16 Ground 50 TERMPWR 17 TERMPWR 51 TERMPWR 18 TERMPWR 52 Reserved 19 Reserved 53 Ground 20 Ground 54 Ground 21 -ATN 55 Ground 22 Ground 56 Ground 23 -BSY 5[...]

  • Page 44

    43 CHAPTER 6: SCSI T echnical Information T able 6-1 (continued). SCSI connector assignments for single-ended (SE) 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number Ground 32 -DB9 66 Ground 33 -DB10 67 Ground 34 -DB11 68 T able 6-2. SCSI connector assignments for dif ferential 16-bit SCSI (wide). Signal Name Pin Number Signal Name P[...]

  • Page 45

    44 2 X 2 SCSI MA TRIX SWITCH T able 6-2 (continued). SCSI connector assignments for dif ferential 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number +DB(5) 12 -DB(5) 46 +DB(6) 13 -DB(6) 47 +DB(7) 14 -DB(7) 48 +DB(P) 15 -DB(P) 49 DIFFSENS 16 Ground 50 TERMPWR 17 TERMPWR 51 TERMPWR 18 TERMPWR 52 Reserved 19 Reserved 53 +ATN 20 -ATN 54 [...]

  • Page 46

    45 CHAPTER 6: SCSI T echnical Information T able 6-2 (continued). SCSI connector assignments for dif ferential 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number +I/O 29 -I/O 63 Ground 30 Ground 64 +DB(8) 31 -DB(8) 65 +DB(9) 32 -DB(9) 66 +DB(10) 33 -DB(10) 67 +DB(11) 34 -DB(11) 68 T able 6-3. SCSI connector assignments for low-voltag[...]

  • Page 47

    46 2 X 2 SCSI MA TRIX SWITCH T able 6-3 (continued). SCSI connector assignments for low-voltage dif ferential (L VD) 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number +DB(4) 10 -DB(4) 44 +DB(5) 11 -DB(5) 45 +DB(6) 12 -DB(6) 46 +DB(7) 13 -DB(7) 47 +DB(P) 14 -DB(P) 48 Ground 15 Ground 49 DIFFSENS 16 Ground 50 TERMPWR 17 TERMPWR 51 TER[...]

  • Page 48

    47 CHAPTER 6: SCSI T echnical Information T able 6-3 (continued). SCSI connector assignments for low-voltage dif ferential (L VD) 16-bit SCSI (wide). Signal Name Pin Number Signal Name Pin Number +SEL 27 -SEL 61 +C/D 28 -C/D 62 +REQ 29 -REQ 63 +I/O 30 -I/O 64 +DB(8) 31 -DB(8) 65 +DB(9) 32 -DB(9) 66 +DB(10) 33 -DB(10) 67 +DB(11) 34 -DB(11) 68[...]

  • Page 49

    48 2 X 2 SCSI MA TRIX SWITCH T able 6-4. SCSI distance/device suppor t. ST A T erm Maximum Bus Length (M) Maximum Devices SE HVD L VD SCSI-1 6 25 — 8 Fast SCSI 6 25 — 8 Fast Wide SCSI 6 25 — 16 Ultra SCSI 1.5 25 — 8 Ultra SCSI 3 — — 4 Wide Ultra SCSI — 25 — 16 Wide Ultra SCSI 1.5 — — 8 Wide Ultra SCSI 3 — — 4 Ultra2 SCSI N/A[...]

  • Page 50

    49 CHAPTER 6: SCSI T echnical Information To access jumper options: Remove the four screws on the bottom of the unit. Then lift off the cover. Figure 6-1. SCSI Switch component placement. • Internal termination jumper block: E13, E14, E19, E20 on SC120A-R2 or E15, E16, E21, E22 on SC121A (see Section 5.3 ).[...]

  • Page 51

    50 2 X 2 SCSI MA TRIX SWITCH 7. T roubleshooting 7.1 Calling Black Box If you determine that your 2 x 2 SCSI Matrix Switch 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 mo[...]

  • Page 52

    51 LEGAL INFORMA TION 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. In no event shal[...]

  • Page 53

    1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2002. Black Box Corporation. All rights reserved.[...]