Seagate ST423451N/W/WD manual Other applicable jumper options, Additional jumper options

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Elite 23 Installation Guide, Rev. A

37

N drives

Other applicable jumper options

Several other jumper options are available as illustrated in Fig- ure 10.

Spinup Delay Option (DS)

J4A

Pin 1

 

 

J01

 

J4B

 

J4B

Pin 1

Pin 1

 

Immediate spinup (if the Start Command option jumper is disconnected)

Spinup delay equal to the SCSI Bus ID multiplied by 12 seconds (if the Start Command option jumper is disconnected).

Start Command Option (ME)

Start spindle according to the Spinup

Delay option jumper.

Start spindle after the SCSI Bus sends a Start Unit command.

SCSI Bus Parity Check (PD)

Check the parity of data bytes read from the SCSI Bus.

Ignore parity check.

Reserved

Figure 10. Additional jumper options

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Contents Elite Disc Drive ST423451N/W/WD Contents Electrostatic discharge protection PrefaceImportant safety information and precautions Page Wichtige Sicherheitshinweise Page European Union Compliance Page Seagate Technology Online services SeaFONE at 1-800-SEAGATESeaNET SeaBOARD BBS Location Modem numberSeagate Technology Forum on CompuServe Seagate technical support FAX Seagate Technology FAX servicesSeaFAX Location Telephone numberSeaTDD Seagate technical support lineGeneral description Drive characteristics Elite 23 Installation Guide, Rev. a Dimensions of the drive General information Drive modelsScsi ID jumpers Drive termination Circuits and data path widths Terminator powerCable characteristics for single-ended circuits Fifty-pin I/O connection to drive Multiple drive connection to host adapter Multiple-drive connection to host adapter Providing adequate cooling Kühlung des Systems Suggested air flow Abbildung 4. Empfohlener Luftstromverlauf Installation des Laufwerkes und Anschluß der Kabel Mounting the drive and connecting cablesElite 23 Installation Guide, Rev. a Pin Gleichstrom Pin PowerHinweis Page Mounting configuration dimensions Quick reference desktop system notes Formatting the driveSetting the Scsi ID on N models Setting the Scsi ID jumpersTerminating the drive Terminating the driveSetting terminator power jumpers on N models Additional jumper options Other applicable jumper optionsWD drives Terminating the drive ST423451W shown Setting terminator power jumpers on W models Other option jumpers are available as illustrated below LED indicator connections for all drive models Active, Ready, and Fault indicatorsPage Page