Seagate BARRACUDA 4LP ST34571N/W/WC/WD/DC Manual descargar pdf (Pagina 68)

58 Barracuda 4LP Product Manual, Rev. D

Recommended mating 80-position PCB mount connectors:

Right-Angle to PCB connectors

Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9

For additional information call Amp. FAX service at 1-800-522-6752.

[1] Closed end type 50 pin connector used. Terminators enabled.

[2] Open end type (in-line application) connector used. Terminators disabled.

[3] Host need not be on the end of the daisy-chain. Another device can be on the end with the terminator, the

host having no terminator.

[4] Total interface cable length must not exceed that specified in Section 9.6.3.1 (including host adapter/initia-

tor). The cable length restriction limits the total number of devices allowed. See Table 12.

[5] SCSI ID7 has highest arbitration priority, ID0 has lowest for “N” models. For “W” models, priority is ID7 to

ID0, then ID15 to ID8 (ID 8 very lowest).

[6] Last drive on the daisy chain.

[7] Open-end type 68-pin connector used. Terminators disabled on “WD” models. If end “WD” device, exter-

nal terminator and closed-end type 68-pin connector used. On “W” models, install terminator enable (TE)

jumper plug. “N” and “W” drives do not require external terminators.

Figure 10. SCSI Daisy-chain interface cabling for “N,” “W,” and “WD” model drives

Straight-in connector Hot Plug version (with ground guide-pin)

Seagate P/N: 77678703

Amp US P/N:

2-557103-1

94-0680-02-1

787311-1 with polarization

Amp US P/N:

2-557103-2

94-0680-02-2

787311-2 without polarization

Amp Japan P/N: 5-175475-9

Host Adapter

PCB

Pin 1

(check your

adapter for Pin 1 location)

[6]

[6] [6]

[7]

SCSI ID 1

SCSI ID 0

SCSI ID 7 [5]

2 through X

SCSI devices [4]

[1]

[3]

[2]

“N” Model

Drive

Terminator

[7]

“W” Model

Drive

“WD” Model

Drive

Note. Do not mix “N” or “W”

drives with “WD” model

drives on the daisy chain.

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 93 94

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