Seagate ST12550N/ND/W/WD manual ST11950 and ST12550 Installation Guide, Rev. D, Hinweis

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ST11950 and ST12550 Installation Guide, Rev. D 43

Note. Signal ground on the power control board (PCB) and the head and disc assembly (HDA) are con- nected together in this drive and you cannot separate them. The equipment in which you have mounted the drive is connected directly to the HDA and PCB without electrically isolating shock mounts. Maximizing the conductive contact area between HDA ground and system ground may reduce radiated emissions. If you do not want the system chassis to be connected to the HDA/PCB ground, you must provide a nonconductive (elec- trically isolating) method of mounting the drive in the host system. This may increase radiated emis- sions and is the system designer’s responsibility.

Hinweis:

Die Signalerde auf der Stromregelungskarte (PCB) und der Kopf- und Festplatteneinheit (HDA) sind in diesem Laufwerk miteinander verbunden und können nicht getrennt werden. Das Gerät, in das Sie das Laufwerk eingebaut haben, ist ohne elektrisch isolierende Stoßdämpfer direkt an die HDA und PCB angeschlossen . Die elektromagnetische Strahlung kann reduziert werden, indem Sie eine möglichst große leitende Kontakfläche zwischen der HDA-Erdung und der Systemerdung vorsehen. Wenn Sie das

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Contents Barracuda 1 Disc Drive ST11950N/ND/W/WD ST12550N/ND/W/WD Contents Electrostatic discharge protection ST11950 and ST12550 Installation Guide, Rev. DImportant safety information and precautions Page ST11950 and ST12550 Installation Guide, Rev. D Wichtige Sicherheitshinweise Page Page Page Page SeaFAX USA 408 438-2620 England 10 ST11950 and ST12550 Installation Guide, Rev. DSeaFONE 408 SeaTDD 408SeaBOARD TelephoneLocation Number General description 12 ST11950 and ST12550 Installation Guide, Rev. DBarracuda 1 and 2 disc drive N/ND type Characteristics ST11950N/ND ST11950W/WD 14 ST11950 and ST12550 Installation Guide, Rev. DCharacteristics ST12550N/ND ST12550W/WD Amps 16 ST11950 and ST12550 Installation Guide, Rev. DST11950 and ST12550 Installation Guide, Rev. D From previous 18 ST11950 and ST12550 Installation Guide, Rev. DInitial setup information Setting the Scsi ID jumpers 20 ST11950 and ST12550 Installation Guide, Rev. DSetting the Scsi ID on N- and ND-type drives Setting the Scsi ID on W- and WD-type drives 22 ST11950 and ST12550 Installation Guide, Rev. DScsi bus termination Terminating the driveST11950N and ST12550N drives Installing terminator packs ST11950N shownST11950W and ST12550W drives Enabling termination On ST11950W and ST12550W drives 26 ST11950 and ST12550 Installation Guide, Rev. DTermination is supplied Terminator powerChanging other applicable jumper options 28 ST11950 and ST12550 Installation Guide, Rev. DScsi Scsi I/O 30 ST11950 and ST12550 Installation Guide, Rev. DRES PAR DMS RES MTR WP Synchronizing spindles 32 ST11950 and ST12550 Installation Guide, Rev. DJ5 Pin ST11950N/ND ST12550N/ND Drives 34 ST11950 and ST12550 Installation Guide, Rev. DProviding adequate cooling Kühlung des Systems 36 ST11950 and ST12550 Installation Guide, Rev. DAbove unit Über der Einheit Under unit Unter der Einheit Mounting the drive and connecting cables 38 ST11950 and ST12550 Installation Guide, Rev. DInstallation des Laufwerkes und Anschluß der Kabel Dimensions Abbildung 15. Laufwerkabmessungen 40 ST11950 and ST12550 Installation Guide, Rev. DPage DC power connector Abbildung 16. Gleichstromanschluß Hinweis Page Formatting the drive