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Appendix b. scsi cable and terminator requirements, Scsi cable requirements – Spectra Logic 2K User Manual

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Appendix B. SCSI Cable and Terminator
Requirements

To operate correctly, the library must meet certain requirements as explained by the
following sections:

SCSI Cable Requirements

SCSI Terminator Requirements

SCSI Cable Requirements

The following table lists the recommended specifications for a SCSI cable (not
included).

Cable Feature

Requirement

Standard Construction

68 conductors (34 twisted pairs with drain wire and shield)

Primary Conductors

Insulated per UL Style 1589
Gauge: #28 AWG minimum stranded (7/34) annealed, tinned copper
Insulation: Polypropylene (80° C) 0.010 inch nominal

Shielding

80% minimum tinned copper braid over aluminum/mylar foil

Outer Jacket

Insulated per UL Style 2919, polyvinyl chloride (PVC) (80° C)

Voltage Rating

30 VAC

Impedance

100 Ohms ±10% @ 1.5 MHz

Grounding

Case to case grounding

Connector

68-contact AMP Amplimate 0.050 male, shielded, SCSI-3 connector