Re: Connector at the end of the cable is for the Master?

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Ah yes it "works", but the primary result of ignoring standards, is job security for tech support. When things finally go pear shaped we have to go thru and "fix" each one of these we find until the "cobbled together system" works again.

Timothy Daniels wrote:

Thanks for pointing that out.  It's also mentioned in version 7
of the spec on p. 16 in paragraph 7.1, Cable Configuration:
http://t13.org/docs2004/d1532v2r4b-ATA-ATAPI-7.pdf

I knew this to be true from basic electrical principles and I
suspected that the specified length dimensions of the cable
were to minimize the effects of signal reflections.  But I have
found, like Anna, that modern ATA hard drives and controllers
are quite tolerant of deviations from cabling specs.  For example,
I have used removable HD trays and "round" cables of various
lengths and no. of connectors for 2 years with no problems
(that I can *perceive*).

*TimDaniels*


"Bob I" wrote:

The specification states that a single device shall be at the end
of the cable for Ultra DMA use. (see page 10)

http://www.t13.org/project/d1321r3-ATA-ATAPI-5.pdf

Anna wrote:

many knowledgeable technicians avoid the "dangling terminator"
situation, i.e., if only one device is connected on the IDE cable,
they will invariably connect it to the end connector and not the
middle one. I do the same myself, but I really can't confirm that it's
necessary in terms of any performance issue, at least none that
I've experienced.




.

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