Seagate ST32271N/W/WC/WD/DC, ST32171N/W/WC/WD/DC, ST34571N/W/WC/WD/DC manual Terminating the drive

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Barracuda 4LP Installation Guide, Rev. B

37

N drives

Terminating the drive

“N” model drives are terminated with permanently mounted IC active terminators. If you install one of these drives and it is not on the end of the SCSI bus, disable the terminators by removing the jumper “TE” from pins 15 and 16 of connector J2 (see Fig- ure 8). If you install the drive on the end of the SCSI bus, enable termination by installing a jumper on pins 15 and 16 of connector J2.

Pin 1

J2

R

 

T D M W P E T T

 

E S E P D S P P

Enable SCSI terminator

Disable SCSI terminator

(default)

 

J6

J2

 

SCSI I/O J1

 

 

 

 

Connector

 

Drive

 

J2 Jumper Type

Front

 

 

DC Power

(enlarged to

 

 

Connector

show detail)

 

 

 

Figure 8. Terminating the drive

Image 39
Contents Barracuda 4LP Disc Drive Contents Electrostatic discharge protection PrefaceImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Barracuda 4LP Installation Guide, Rev. B European Union Compliance Seagate Technology online services SeaFONE at 1-800-SEAGATESeaNET SeaBOARD Seagate CompuServe ForumBBS Location Modem number Location Telephone number Seagate Technology FAX services SeaFAXSeagate technical support FAX Seagate technical supportSeaTDD General description RPM Drive characteristicsSingle-ended Differential DC power requirements Amps ST34371/ST34571DC power requirements Amps ST32171/ST32271 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 Barracuda 4LP Installation Guide, Rev. B 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 cablesBarracuda 4LP Installation Guide, Rev. B DC power connector Abbildung 5. Gleichstromanschluß Hinweis Page Mounting configuration dimensions Quick reference desktop system notes Formatting the driveSetting the Scsi ID on model N drives Setting the Scsi ID jumpersTerminating the drive Terminating the driveSetting terminator power jumpers Additional jumper options Other applicable jumper optionsWD drives Host Alternate Terminating the drive W model shown Front DC Power Enlarged to Show detail Connector Other option jumpers are available as illustrated below WC/DC drives Jumper options Applicable jumper optionsPage Page