Scsi cable requirements, Appendix b. scsi cable and terminator requirements – Spectra Logic Spectra 12000 User Manual
Page 159
Appendix B. SCSI Cable and Terminator
Requirements
To operate correctly, the Spectra 12000 library must meet certain
requirements which are discussed in the following sections:
SCSI Cable Requirements
The following table lists the recommended specifications for a SCSI
cable:
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 (176
°
F) (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) (176
°
F) (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