Re: [SI-LIST] : The Flight-Time/SI Effects of Trace 'Trombon

Vadim Heyfitch ([email protected])
Thu, 08 Jan 98 19:02:00 PST

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There was a detailed discussion of this subject some months ago. Look in
the archives.

Vadim Heyfitch
Intel Corp.

______________________________ Reply Separator _________________________________
Subject: [SI-LIST] : The Flight-Time/SI Effects of Trace 'Tromboning'
Author: [email protected] at SMTPGATE
Date: 1/8/98 7:26 PM

Has anyone investigated the effects of trace 'tromboning' (i.e.,
folding the trace to add length) on flight-time and signal integrity
in general. I'm interested in some rough rules-of-thumb on flight-time
increases/decreases given a fold with a length of 'x' and a distance
between the traces of 'y'. (The environment is current
state-of-the-art 100Mhz+ multi-layer boards). How much separation is
needed to eliminate any problems (assuming the problem is

Also, is this handled correctly in current simulators (such as Quad).

Orville Orr
Compaq Computer Corp.
ECG - Enterprise Computing Group
Phone: (281) 518-8546
Fax: (281) 518-7445
Pager: (713) 765-9892
Email: [email protected]

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Subject: [SI-LIST] : The Flight-Time/SI Effects of Trace 'Tromboning'
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