Re: [SI-LIST] : Transmission Line Analysis Software

Mark McKee (mmckee@cisco.com)
Thu, 11 Dec 1997 09:54:00 -0800 (PST)

I've been using the Viewlogic ISIS prevue for a while now. I'm, currently
using the beta version 1.1.5 that supports macros. A couple of comments.
(by the way viewlogic is working getting me answers to these questions/issues
as we speak.

Let me say that in general, with the use of assigning a range of values to
segments of tranmsission lines (stubs as an example) or ranges to inductors
and capacitors (as package leads example), you can generate a single schematic
for a topology, but generate all variations and combinations of the variables
you assign. This allows for pretty extensive topology study. I've used this
for GTL Bus design to generate specific layout guidelines to the CAD group.

However, not all features are working. There are work arounds, but you need
to be pretty good at XTK in order to work around the things that are busted.
Until things are fully fixed, I use Prevue to generate the topology file
and then modify both the topology files, and/or model files, and/or the xfx
files as needed to get the specific analysis I want.

If you want more details, on what works and what doesn't work, you should
get the tool in for test run, try it out, email me, then we can talk and you'll
understand how these things affect you.

Mark