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CHAPTER 6: SCSI Technical Information

Figure 6-1. SCSI Switch component placement.

• RS-232 jumper block: E9 through E18

• Active terminator power select: E1 through E8, E29, E30

Содержание SC122A

Страница 2: ...REE 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 b...

Страница 3: ......

Страница 4: ...perated 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 measur...

Страница 5: ...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 l...

Страница 6: ...r una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado deb...

Страница 7: ...UAL UL is a registered trademark of Underwriters Laboratories Incorporated Windows and Windows NT are registered trademarks of Microsoft Corporation Any other trademarks mentioned in this manual are a...

Страница 8: ...tch Placement 15 3 4 Power Equipment Off 16 3 5 SCSI Interface Cabling 16 4 Operator Controls and Indicators 17 4 1 AC Power Switch 17 4 2 LCD Display Keypad and Indicators 17 4 2 1 LCD Display 17 4 2...

Страница 9: ...onsiderations 33 5 12 SCSI Switch Typical Applications 34 5 13 Network Control of SCSI Switch Optional 35 5 13 1 LAN Port Configuration 35 5 13 2 Cfgswitch Utility 35 5 13 3 SetswitchTerm Utility 38 6...

Страница 10: ...E Maximum Data Rate 8 bit Narrow 20 MBps Maximum Data Rate 16 bit Wide 40 MBps Maximum Port Cable Length 6 meters 19 7 ft Internal Terminator Impedance 100 ohms Terminator Disconnect Capacitance 3 pF...

Страница 11: ...citance 3 pF Active Internal Bus Termination Serial Interface Baud Rate 9600 or 19 200 baud Mode No parity 8 bits 1 stop bit Maximum Cable Length 15 meters 50 ft Rear Panel Connectors DB9 LAN Port Opt...

Страница 12: ...9 CHAPTER 1 Specifications 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...

Страница 13: ...232 serial interface a Graphic User Interface GUI allows the system administrator to remotely operate and control SCSI port configuration and termination report SCSI bus activity gather performance st...

Страница 14: ...temperature Set internal temperature alarm Set serial port configuration Display SCSI bus busy status Display port configuration 2 3 Technical Description 2 3 1 AVAILABLE SCSI SWITCH INTERFACES The 4...

Страница 15: ...ls on the SCSI bus No additional software is needed for installation and operation A universal switching power supply auto ranges input voltages between 105 VAC and 240 VAC 2 3 3 ULTRA2 SCSI COMPATIBI...

Страница 16: ...2 Typical installation Computer Tape Disk Term Computer Disk Term Term Term Disk CD Rom Term Scanner Term Scanner Term 1 2 4 3 B B A A Term 1 2 4 3 B B A A S W I T C H M A T R I X Term Term Term Term...

Страница 17: ...ble or disable each internal SCSI port terminator Refer to Chapter 4 for complete instructions on operating the LCD keypad You can selectively enable or disable any internal terminator to meet system...

Страница 18: ...nless otherwise specified the Switch will be shipped with a 110 volt power cord for use in the USA For a power cord that will work in your country outside the USA call Black Box Technical Support 3 3...

Страница 19: ...feet 25 meters of cable Low voltage differential devices can support up to 82 feet 25 meters of cable Connect the host adapter or peripheral to the rear panel connector using a proper SCSI cable Sect...

Страница 20: ...apply AC power to the SCSI Switch before powering SCSI devices and computers This will ensure that devices are found on system bootup 4 2 LCD Display Keypad and Indicators 4 2 1 LCD DISPLAY The LCD d...

Страница 21: ...ovide SCSI Switch status information POWER Identifies that the SCSI Switch is powered BUSY Identifies that there is SCSI activity on one or more SCSI ports ALARM A visual and audible alarm identifies...

Страница 22: ...H NUMBER DISPLAY POWER TEMPERATURE SET TEMP LIMIT SET TEMP LIMIT MAX 40 C CURRENT TEMP 26 0 C DISPLAY POWER TEMP PWR SUPPLY GOOD 25 5 C SET SWITCH NUMBER 01 USE UP DOWN KEYS SET SERIAL PORTS COM 1 960...

Страница 23: ...d active 4 4 SCSI Switch Port Configuration The SCSI Switch has an internal memory device that retains the last configuration and set up information Switch port termination serial port and control par...

Страница 24: ...tch Default Configuration The SCSI Switch default configuration as shipped from the factory is defined below PORTS A1 B2 TERMINATION All Off SERIAL PORTS 9600 Baud Daisychained SWITCH NUMBER 01 TEMPER...

Страница 25: ...he maximum cable distance for LVD should not exceed 25 meters 82 feet total length Single ended SE When operating with SE devices 40 MBps wide Ultra SCSI computers and peripherals are supported The ma...

Страница 26: ...E8 Port 4 NOTE The standard factory default connects internal terminators to internal 5 volts 5 4 Selecting External Terminator Power The SCSI Switch can supply external terminator power via an intern...

Страница 27: ...perate separate communications ports or as daisy chained ports Daisy chained mode allows one computer or terminal to communicate with multiple SCSI Switches Table 5 3 Rear panel RS 232 connector pinou...

Страница 28: ...default configuration operates with standard modem cables Figure 5 4 RS 232 Port 2 NOTE To bypass RTS and CTS control signals jumper E17 1 and E18 1 This may be required in some DOS applications 5 7 R...

Страница 29: ...Box 3 7E Box 2 7D Box 4 7F del c Port Select Port A1 A1 Port B1 B1 Port A2 A2 Port B2 B2 Port A3 A3 Port B3 B3 Port A4 A4 Port B4 B4 NOTE 1 More than one port can be selected when transmitting to por...

Страница 30: ...rt Port Status S cr S cr abcdefgh Select Terminator k cr A1k cr Report Terminator Status s cr s cr ABCD123456 Lock Front Panel L cr L cr Unlock Front Panel U cr U cr Report Model S N and cr text cr te...

Страница 31: ...cr Set Serial Port Mode OC cr OC x cr Set Switch Number OD cr OD xx cr Set Lock Unlock OP cr OP xxxx cr Password Set Temperature Limit OT cr OT xx cr Report Revision R cr R cr 2024610 Lock Serial Por...

Страница 32: ...specified switches off b Report SCSI Port Matrix Assignment Status command cr S cr report A1234B1234K cr c Select SCSI Terminator Matrix command cr AB1234k cr report none d Report SCSI Terminator Sta...

Страница 33: ...SCSI Bus Performance command cr P xy cr report P aabb11223344 cr aa hex 00 FF Port A bb hex 00 FF Port B hex 00 0 Busy hex FF 100 Busy h SCSI bus Inactivity to SCSI report command cr I cr report xxxx...

Страница 34: ...Set Serial Port Mode command cr OC x cr x 0 daisy chain serial ports x 1 dual comm serial ports report none m Set Switch Device Number command cr OD xx cr xx 01 thru 32 report none n Set Lock Unlock F...

Страница 35: ...e that is compatible with Windows 95 98 and Windows NT operating systems to allow remote control of the switch Follow instructions on the disks to install the software Figure 5 5 Screen shot of GUI co...

Страница 36: ...sition on the rack aligning the mounting bracket holes with the rack holes Use 5 8 inch 10 32 to 12 24 screws to install the Switch in the rack 5 11 2 RACKMOUNT CONSIDERATIONS 1 For proper operation e...

Страница 37: ...d the SCSI Switch supply circuit 6 Make sure the rackmount equipment is connected to earth ground 5 12 SCSI Switch Typical Applications The following illustrations provide sample application and confi...

Страница 38: ...s shown in Figure 5 9 RS 232 ENABLED and remove the ribbon cable from J14 see Figure 5 10 as shown in following configurations 5 13 2 CFGSWITCH UTILITY The cfgswitch exe utility is used to configure t...

Страница 39: ...rsions of HyperTerminal to support connections to IP addresses via LAN NOTE You will need to specify port 3001 when establishing the connection Figure 5 9 SCSI Switch LAN RS 232 jumper configuration O...

Страница 40: ...ork switch screens 4340052 Ethernet Addresses 1 00 80 a3 2b 9c 74 REV A13 Search for Network Switches Starting IP Address Ending IP Address Cancel OK Search New IP Address Configure Exit Initialize IP...

Страница 41: ...9200 dflt 9600 n Switch Number The number of the 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 b...

Страница 42: ...39 CHAPTER 5 Configuration and Operation r command command is sent to the switch with no parsing Any response from the switch is displayed on the console s error output...

Страница 43: ...de the ability to address up to 32 devices a 16 bit single cable data bus and serial SCSI protocol The SCSI 3 standard has been split into several subdocuments including the SCSI Parallel Interface SP...

Страница 44: ...rmpower allowing a consistent signal to be transmitted everywhere on the bus This in turn compensates for the varying bus lengths and signal loads All lines are terminated through 110 ohm resistors wh...

Страница 45: ...follows BSY BUSY An OR tied signal indicating that the bus is being used SEL SELECT An OR tied signal used by an initiator to select a target or by a target to reselect an initiator C D CONTROL DATA...

Страница 46: ...A data bit is defined as one when the signal value is true and is defined as zero when the signal value is false Data parity DB P shall be odd Table 6 1 SCSI connector assignments single ended SE 16 b...

Страница 47: ...l 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 57...

Страница 48: ...in Number Ground 32 DB9 66 Ground 33 DB10 67 Ground 34 DB11 68 Table 6 2 SCSI connector assignments differential 16 bit SCSI wide Signal Name Pin Number Signal Name Pin Number DB 12 1 DB 12 35 DB 13 2...

Страница 49: ...umber 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 Gro...

Страница 50: ...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 Table 6 3 SCSI connector assignments low voltage differential LVD 16 bit SCSI wide Signal Name Pin Numbe...

Страница 51: ...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 TERMPWR 18 TERMPWR 52...

Страница 52: ...ontinued SCSI connector assignments low voltage differential LVD 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...

Страница 53: ...ast 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 1 25 25 2 Ultra2 SCSI 1 12 12 8 Wide Ultra2 SCSI 1...

Страница 54: ...51 CHAPTER 6 SCSI Technical Information Figure 6 1 SCSI Switch component placement RS 232 jumper block E9 through E18 Active terminator power select E1 through E8 E29 E30...

Страница 55: ...omplete description including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the prob...

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