Subject: re: May any HyperLynx user help me?

From: "Lynne Green" <[email-masked]>
Date: Wed, 21 Jun 2000 15:50:20 -0700

For HyperLynx software questions, please post to either the HyperLynx List
Server (http://www.HyperLynx.com/listserver.htm), or send questions directly
to [email-masked].

I have already taken the liberty of forwarding Baoshu's question to our
support line.

Lynne

Dr. Lynne Green
Product Marketing Engineer
HyperLynx, A Division of PADS Software, Inc.
14715 NE 95th St, Suite 200
Redmond, WA 98052
425-497-5081
FAX 425-881-1008
[email-masked]
http://www/hyperlynx.com

-----Original Message-----
From: Baoshu XU [mailto:[email-masked]]
Sent: Monday, May 15, 2000 4:46 AM
To: [email-masked]
Subject: May any HyperLynx user help me?

Hi there,

The question is originated from the HyperSuite Demo(a hyperlynx product)
report. The Termination Wizard in this simulation tool reports also driver
impedance and transition time. After hundreds of test I find the reported
transition time is thus calculated:

Z=6*X*Y/(X+Y)

where

Z = transition time,
X = dt_r/dv( typical ),
Y = dt_f/dv( typical )

That is to say, transition time is not related to supply level, not to
output swing,  not to the absolute value of dv or dt even.  What does this
mean?

Best Regards
Baoshu XU