Seagate ST15150W/WD/WC, ST15150N/ND/DC manual Terminating the drive

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N/ND drives

36	Barracuda 4 Installation Guide, Rev. E

Terminating the drive

To terminate the ST15150N drive, enable the perma- nently mounted IC active terminators by installing an Enable Drive Terminator jumper on J01 pins 1 and 2 as shown in Figure 11. If you install one of these models and it is not on the end of the SCSI bus, remove the jumper to disable the permanently mounted IC termina- tors and thereby remove internal termination from the drive.

The ST15150ND drive does not have internal termina- tors or any way of adding internal termination. You must provide external active termination (ANSI SCSI-2 Alter- native 2) to the drive when termination is required.

J4

Pin 1

J01

Pin 3

J01

Enable drive terminator.

Pin 1

Pin 2

Disable drive terminator.

Figure 11. Terminating the drive

Image 38

Contents Barracuda 4 Family ST15150N/ND/DC ST15150W/WD/WC Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Barracuda 4 Installation Guide, Rev. E Wichtige Sicherheitshinweise Barracuda 4 Installation Guide, Rev. E Page Barracuda 4 Installation Guide, Rev. E Page SeaFAX USA 408 438-2620 England CompuServe ForumSeaBOARD SeaFONE 408SeaTDD 408 Telephone Location NumberGeneral description Barracuda 4 disc drive W/WD WD/WC/DC ND/WD/DC Barracuda 4 Installation Guide, Rev. E From previous Drive models General informationScsi ID jumpers Drive termination Scsi bus terminationOther applicable jumper options Terminator powerSynchronizing spindles optional Providing adequate cooling Kühlung des Systems Suggested air flow Abbildung 5. Empfohlener Luftstromverlauf Mounting the drive and connecting cables Installation des Laufwerkes und Anschluß der Kabel Dimensions ST15150N/ND Abbildung 6. Laufwerkabmessungen Dimensions ST15150W/WD Abbildung 7. Laufwerkabmessungen Dimensions ST15150WC/DC Abbildung 8. Laufwerkabmessungen Page DC power connector Abbildung 9. Gleichstromanschluß Hinweis Formatting the drive Setting the Scsi ID jumpers ScsiTerminating the drive Terminating the driveDrivesN/ND Synchronizing spindles ScsiSeveral other jumper options are available as illustrated DrivesW/WD WD drives Power Connector ST15150W/WD Pin DC Power Write Protect option WP Write Protect = On disables writing MTR DrivesWC/DC Connecting remote LEDs Jumper options Barracuda 4 Installation Guide, Rev. E Barracuda 4 Installation Guide, Rev. E