HP 28642A manual Termination

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systemadministrator

The person who managesor controls the configuration and operation of a computer system.

terminator

An assemblythat contains a resistivenetwork to terminate the peripheral end of a SCSIbus.The peripheral end of the SCSIbus may not need a terminator if the last peripheral device on the bus alreadycontains SCSItermination resistors.

termination

To complete the bus circuitry at eachend of a SCSIbus,the electrical lines (at each end only) must be terminated with a resistive network. The HP-PB SCSI/parallel adapter contains termination resistor packs on the card and must be located at one end of the SCSI bus. SeeaIso,terminator.

two-board adapter

Seeslot divider.

unbalanced signal

Seesingle-ended signal.

6 Glossary

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Contents HP 28642A HP-PB Scsi HP 28655A HP-PB SCSI/ Parallel 5960-3126 El091 HP HPPrint History Safety Considerations@Hewlett-Packard Company, 1991. AI1rights rcservcd Installation and S&vice HP 28642A and HP 28655A at a Glance Product Description This Book Table of Contents Page Installing HP 28642A/28655AAdapter Lnstalllng the HP 28642A/28655A Adapter Verify Product Contents Prepare to Install the Adapter CardObserve Antlstatic Precautions Record Adapter Card Identification Information Gather Tools and Accessories NeededTable l-l. Scsi Cables LengthsDescription meters Dependent requirements that are not noted herePeripheral to 92222A Create Data corruption Installing the AdapterShut Down the System and SwZtch Off the Computer RemoveCheck the Card’s Hardware Configuration Set the Desired Parity-Checking CapabUity Figure l-4. Default Switch Settings Installing the AdapterAddress = closed = open Installing the Adapter l-9Set the Scsi Bus Address Scsi BusTwo resistor packsmust be installed Verify that Resistor Packs are Properly InstalledSelect an Appropriate Slot Install and Connect the CardHP-Pa Standard Power Symbol Systemperformance implications, if any Record the Slot NumberComputer hardware limitations for l/O cards, if any Prepare the Slot For Use Ignment Hole Page Insert the Card into the Slot Card guides. If the problem persists,get helpAttach the Card Cables Supplied with this product provides a thumbscrew connectorProperly on the SCSIbus Installing the Adapter l-19Connect Your Peripheral Devices Connect Your Single-Ended Scsi DevicesTerminate the Scsi Bus Device operation on the SCSIbus Scsi Cable Length Example 12. Scsi Bus Example Installing the AdapterTwo meters TurnPowerOn to Peripherals, Then to the ComputerConnect Your Parallel Device, If Applicable Reassemble your computerIn/Out Signal Name24Installing the Adapter Pin25 Data corruption or loss,or damageto hardware Turn Power On to Peripherals, Then to the ComputerMPE XL Systems Set Up the Operating SystemHP-UX Systems Verify Operation ServiceInformation Service Information Flgure 2-1. Location of Board Component FRUs Exchange AssemblyExchange adapter card assembly Field Replaceable UnitsOther FRUs Board ComponentsSelf-lestFailure Troubleshooting ToolsShould be performed by authorized servicepersonnel only Operation. Refer to your systemreference manuals Boot failure occursSelf-Test Failure LED Troubleshooting Checklist Scsipba and Centpba DiagnosticsDoes any device require a special SCSIterminator? Removal/Replacement Instructions For card removal, follow the procedures below Removal/Replacement of the CardService Information 2-l Removal/Replacement of Card ComponentsMinimize touching the connector pins Also be determined from the,scsipbadiagnosticType and rating Damagewasextensive, you may need a new componentCan continue to operate normally DiagnosticFlgure 2-3. Replacing the Termpwr Fuse Service Information Reshipment Guidelines 1green Technical SpecificationsGeneral IPhysical IEnvironmental IElectrical +5 VdcAmerican National StandardsInstitute Backplane ConfigurationGlossary FRU HP-PB Host adapter SeeadapterPrecision Bus See HP-PB Complies with the Scsi specification X3.131 GlossaryParallel port SCSI-2 Termination Index t IndexCard version...14 CableHP Precision Bus SeeHP-PB HP-PB Identification information...l-4 installingPart number...2-3 Field replaceable units se-eFRUS FRUs...2-3Loopback hood...2-4 Physical specifications...2-16 IndexSelf-test failure LED...2-6 shut down PowerProduct contents...13 Resistor pack...&10Ylrlbo~ Storing adapter cards...l-3 switchDuring installation/removal..J-6,1-19,2-10 Troubleshooting..2-85960-3126 El091