Re: RAMfast to SCSI cable

[Jawaid Bazyar <bazyar@hypermall.com>]

David Empson wrote:
> 
> With a 50-to-50 ribbon cable, shielding is less important, because
> every second wire is a ground signal.
> 
> This is not the case with a 25-to-50 "system" cable.
> 
> I haven't read the part of the SCSI standard on cable specifications,
> but I would expect that ribbon cables are only supposed to be used for
> short distances, and only within a shielded enclosure (e.g. a computer
> or hard drive case).

I believe the SCSI spec specifies _twisted-pair_ ribbon cable.
Imagine each signal wire twisted around its neighboring ground-wire.


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