** This is the quasi-official and semi-temporary T13 email list server. **
Ditto on what Jeff said.
I looked at the second cable type, where a regular 80 was sliced and
bound together. They went to the trouble of using teflon, but on the
scope, it looked pretty scary and into the trash it went.
At 2:02 PM -0500 7/31/01, Wolford, Jeff wrote:
> ** This is the quasi-official and semi-temporary T13 email list server. **
>
>I have looked at two types of round ATA cables:
>
>Both used 80 conductors,
>1) Curled cable over onto its self (rolled, then shrinked wrapped)
>2) sliced the cable into individual wires and
> bound those together.
>
>NEITHER use a twisted pair like what is used
>in the SCSI LVD U160 cable... just straight wire (looks like they
>started with a normal ATA 80 conductor cable)
>
>Both cables created MUCH greater cross talk:
> + some what better than a 40 conductor cable, and
> + HIGH variance from cable to cable
>Over a normal 80 conductor cable and thus I never took them
>to the next level of running them on a TDR.
>
>Another problem is a NUMBER of OSs/drivers assume that if a
>a drive and a host can do Mode 5, that the "system"
>can run mode 5.... This yet another case where
>this would NOT be TRUE.
>
>Jeff
>
>Jeff Wolford Email: [EMAIL PROTECTED]
>Senior Storage Architect
>Manager - Storage Interface and Tools - PC Storage Group
> Voice: (281) 514-9465, Pager: (800) 973-5739
>Compaq Computer Corporation
>
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