Seagate ST34520N/W/WC/LW/LC manual Enable Scsi terminator Disable Scsi terminator Model only

Page 50

48

Medalist Pro Installation Guide, Rev. B

W drives

Terminating the drive

“W” 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. 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 (see Figure 13).

Note. Use active (ANSI SCSI-2 Alternative 2) terminators when terminating the bus.

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

*“W” model only

(default)

 

J6

J2

 

SCSI I/O J1

 

 

 

 

Connector

 

Drive

 

 

Front

 

J2 Jumper Type

 

DC Power

(enlarged to

 

Connector

show detail)

 

 

Figure 13. Terminating the drive

Image 50
Contents ST39140N/W/WC/LW/LC Contents Handling precautions PrefaceElectrostatic discharge protection Important safety information and precautions Medalist Pro Installation Guide, Rev. B Wichtige Sicherheitshinweise Medalist Pro Installation Guide, Rev. B Page Electromagnetic compliance Regulatory agency complianceElectromagnetic susceptibility Electromagnetic compliance for the European Union Australian C-TickSeagate Technology support services Presales Support Customer Service CSO European Support Services Africa/Middle East Support Services SeaFAX General description Drive characteristics RPMDCX DC power requirements Amps for LW/LC Models ST39140 ST34520Medalist Pro Installation Guide, Rev. B Dimensions of the drive General information Drive modelsScsi ID jumpers Drive termination Terminator power Circuits and data path widthsInterconnect characteristics for single-ended I/O circuits Interconnect characteristics for LVD I/O circuits Fifty pin I/O connection to drive Multiple drive connection to host adapter Multiple-drive connection to host adapter Medalist Pro Installation Guide, Rev. B Providing adequate cooling Kühlung des Systems Suggested air flow Abbildung 4. Empfohlener Luftstromverlauf Mounting the drive and connecting cables Installation des Laufwerkes und Anschluß der KabelMedalist Pro Installation Guide, Rev. B DC power connector Abbildung 5. Gleichstromanschluß Hinweis Page Mounting configuration dimensions Formatting the drive Quick reference desktop system notesSetting the Scsi ID jumpers Setting the Scsi ID on model N drivesTerminating the drive Terminating the driveSetting terminator power jumpers Other applicable jumper options Additional jumper optionsLW drives Host Alternate Enable Scsi terminator Disable Scsi terminator Model only Terminator power Additional jumper options for W/LW drives Additional jumper option for LW drives WC/LC drives Applicable jumper options Jumper optionsLC drives Additional jumper options for LC drives Page