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Article #80

Re: second hard drive data cable extension

#80
From: terry russell
Date: Sat, 05 Dec 1998 00:00
35 lines
2139 bytes
Robert Baer wrote:

> you add a secondary IDE controller board.  The typical IDE controller
> cable, wether for one drive or two, is about 20 inches long, and there
> is no way to extend them, and one should never attempt to extend the
> length!  The signal path length cannot be too long for timing reasons,
> and to preserve signal waveform integrity.

 normally 18 inches, some slightly longer ones are available
 usually you wouldn't want to go beyond that for standards reasons
and if you do the configuration needs to be tested 

 _most_ hardware can run at double that with no problems, but some
begin to have problems with longer cables, cable quality has a lot to
do with it 

 ...confirmed with a few Tbytes of disk to disk file transfers
swap files etc with no glitches
 
and replying to original poster:

 there are extension cables , not hens teeth but close, I have seen
exactly _one_, and it worked fine

 or make your own header with the cable orientation the reverse of the
normal cable

 or get some idc connectors and roll you own cable to the required
length


-- 
mordant@wantree.com.au
Disclaimer: all care taken, some truth may have slipped through
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From: terry russell <mordant@wantree.com.au>
Subject: Re: second hard drive  data cable extension
Date: 1998/12/05
Message-ID: <3669199E.561@wantree.com.au>
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