Seagate ST34555N/W manual Enable Scsi terminator Disable Scsi terminator Model only

Page 44

42	Hawk 4XL Installation Guide, Rev. A

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
	J6	SCSI I/O J1
		SCSI I/O J1
		Connector
	Drive
	Front
J2 Jumper Type		DC Power
(enlarged to		Connector
show detail)

Figure 13. Terminating the drive

Image 44

Contents

Hawk 4XL Disc Drive ST34555N/W Installation Guide Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Hawk 4XL Installation Guide, Rev. a Electromagnetic compliance Regulatory agency complianceElectromagnetic susceptibility Electromagnetic compliance for the European Union Australian C-TickSeagate technical support services Online servicesSeagate CompuServe forum FAX services SeaFAXDirect-support services Seagate technical supportCustomer service centers Manufacturer’s representativesGeneral description Drive characteristics RPMSingle-ended DC power requirements AmpsST34555N/W Dimensions of the drive General information Drive modelsScsi ID jumpers Drive termination Terminator power Circuits and data path widthsCable characteristics for single-ended circuits Fifty pin I/O connection to drive N model 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 Mounting the drive and connecting cables Installation des Laufwerkes und Anschluß der KabelHawk 4XL Installation Guide, Rev. a 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 drive Setting terminator power jumpers Other applicable jumper options Additional jumper optionsSetting the Scsi ID on model W drives Host Alternate Enable Scsi terminator Disable Scsi terminator Model only Terminator power Other option jumpers are available as illustrated below