Re: [SI-LIST] : Signal integrity simulation tool - your opinion and recommandation

M. Susan Tweeton (mstweeto@collins.rockwell.com)
Wed, 02 Sep 1998 09:21:20 -0500

We've been using HyperLynx heavily for about 8 months now. It's great
for a quick look at what issues you may encounter. You can investigate
net topologies, terminations, effects of layer stackups and impedance
mismatches, and the effects of changing part families. To come in the
short future is a crosstalk analysis tool that will be an add-on to the
LineSim tool. Our attraction to the tool is its extreme ease-of-use.
We wanted something simple that the design engineers could pick up
easily so they would use it. Not many projects have the schedule budget
to retrain engineers every 6-12 months on how to use a tool. There are
plenty of more powerful, more accurate tools out there, but they require
a lot of time, (and money) to master. We'd rather keep those tools for
the dedicated signal integrity engineer, someone who is going to use the
tool extensively.

It all comes down to what you need in a tool. If you want something
that gives very accurate, very detailed results, with lots of bells and
whistles, and have a dedicated signal integrity group to use it,
HyperLynx may not be the tool you want. But be prepared to invest a lot
of money (upwards of 10times more) and a lot of time on other tools. If
you want something simple that your design engineers can use, or
something that will give you a good "what if" result in a matter of
minutes, and you don't want to spend a lot of money, HyperLynx will fit
the bill.

Don't just take my word for it. I know of a couple of well respected
signal integrity experts who use and recommend the tool. I'll let them
identify themselves.

Thats my two cents worth.

Susan Tweeton
Rockwell-Collins

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