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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: [email protected]

JULY 2000

IC490A

SCSI Fiber Optic Extender

LINK A

CTIVE

BUS A

CTIVE

LINK E

RROR

POWE

R

SCSI FIBER OPTIC EXTENDER

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Содержание IC490A

Страница 1: ...echnical 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 blackb...

Страница 2: ...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 3: ...l 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...

Страница 4: ...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 5: ...4 SCSI FIBER OPTIC EXTENDER TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners...

Страница 6: ...Extender 12 3 6 2 Remote SCSI Fiber Optic Extender 12 3 7 Verifying Communications 13 4 Operator Controls and Indicators 14 4 1 Power Switch 14 4 2 Indicators 14 5 Interfacing Requirements 15 5 1 SCSI...

Страница 7: ...C EXTENDER Chapter Page 7 1 3 SCSI 3 20 7 1 4 Signal Wiring 20 7 1 5 Common Problems 21 7 1 6 Passive Terminators 21 7 1 7 Active Terminators 21 7 2 SCSI Installation Tips 21 7 3 SCSI Interface Signal...

Страница 8: ...SI Fiber Optic Interface Maximum Fiber Cable Length 62 5 125 m MMF 700 ft 213 4 m 50 125 m MMF 1600 ft 487 7 m Fiber Optic Serial Data Rate 1 06 GHz Fiber Optic Connector Type SC Optical Wavelength 85...

Страница 9: ...ms RAID arrays tape backup peripherals and SCSI laser printers can be located up to 1600 feet 487 7 m from the host computer Because the Extender is completely transparent to your SCSI system addition...

Страница 10: ...SCSI command functionality and remain transparent to the user The Extender conforms to ANSI X3 131 and X3T9 2 specifications with single ended device termination Disconnect and Reselect are fully sup...

Страница 11: ...EXTENDER 2 3 What the Package Includes Your package should contain the following items 1 SCSI Fiber Optic Extender 1 AC power cord This users manual If anything is missing or damaged please call Black...

Страница 12: ...onnection with the greatest noise immunity and distance from the Extender to your peripherals But in any case no cables connected to the Extender may exceed 6 meters 19 7 ft for single ended units and...

Страница 13: ...with termination enabled 3 6 Connecting a Fiber Optic Cable A duplex fiber optic cable with standard SC plugs interconnects two SCSI Fiber Optic Extenders 3 6 1 LOCAL SCSI FIBER OPTIC EXTENDER Insert...

Страница 14: ...Fiber Optic Extenders and verify that the LINK ACTIVE indicators are lit This will verify that the local and remote Extenders are communicating Other computer equipment can now be powered up NOTE If...

Страница 15: ...are communicating and sending sync data over the fiber optic link The Extender will disconnect from the SCSI bus when the link is not active BUS ACTIVE The Bus Active indicator provides visual indicat...

Страница 16: ...bus should be no longer than 1 meter 3 3 ft and differential cables 12 meters 39 4 ft NOTE Do not intermix single ended and differential devices on any one side of the SCSI chain unless a SCSI differ...

Страница 17: ...per as shown in Figure 5 2 NOTE The default setting is INSTALLED supply external terminator power Figure 5 2 External terminator power 5 4 Selecting Internal Terminator Power Internal SCSI Fiber Optic...

Страница 18: ...um achievable distance between units is 500 meters or approximately 1600 feet for the SCSI Fiber Optic Extender Improper connector termination splicing of the fiber optic cable and use of other cable...

Страница 19: ...I Fiber Optic Extender will disconnect from the SCSI bus interface in the event of a fiber optic link failure or disconnection from power source 6 2 System Performance The Extender will support any co...

Страница 20: ...ocal high speed peripherals The secondary SCSI bus would be used exclusively as the extended SCSI bus Figure 6 1 Alternative system configuration CHAPTER 6 Operation Computer Disk Drives Disk Drive Ta...

Страница 21: ...lude 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...

Страница 22: ...ation power 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 resistor...

Страница 23: ...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 A signal driven by a target that in...

Страница 24: ...as zero when the signal value is false Data parity DB P shall be odd Table 7 1 SCSI connector assignments low voltage differential LVD 16 bit SCSI wide Signal Name Pin Number Signal Name Pin Number DB...

Страница 25: ...ame Pin Number Signal Name Pin Number Ground 15 Ground 49 DIFFSENS 16 Ground 50 TERMPWR 17 TERMPWR 51 TERMPWR 18 TERMPWR 52 Reserved 19 Reserved 53 Ground 20 Ground 54 ATN 21 ATN 55 Ground 22 Ground 5...

Страница 26: ...ntinued SCSI connector assignments low voltage differential LVD 16 bit SCSI wide Signal Name Pin Number Signal Name Pin Number DB 9 32 DB 9 66 DB 10 33 DB 10 67 DB 11 34 DB 11 68 CHAPTER 7 SCSI Techni...

Страница 27: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2000 Black Box Corporation All rights reserved...

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