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Appendix B SCSI Cable
The recommended SCSI cable for an Ultra Wide SCSI-2 operating at
a transfer rate of 40 Mbytes/sec. is described below.
Maximum length
Impedance
Signal Attenuation
Pair-Pair Propagation
Delay Delta
DC Resistance
SCSI Standards, Cable Length and Corresponding Maximum
Possible Drive Connections
Single-
Ended
SCSI-1
6 m
SCSI-2
3 m
Wide SCSI-2
3 m
Ultra SCSI-2
1.5 m
Ultra SCSI-2
Ultra Wide SCSI-2
Ultra Wide SCSI-2
1.5 m
Ultra Wide SCSI-2
3 m
Ultra2 Wide SCSI
(LVD)
Appendix B SCSI Cable Specifications
Specifications
1.5 meters
Between 90
to 132
0.095 dB/meter @ 5 MHz (max.)
0.2 ns/meter (max.)
0.23 /meter @ 20 C (max.)
Differential
LVD
25 m
-
25 m
-
25 m
-
25 m
-
3m
-
-
-
25 m
-
-
-
-
-
-
-
12 m
Maximum
Devices
8
8
16
8
4
16
8
4
16
B-1
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