RE: [IBIS-Users] matching V-t curves

Ramiro,
neither you nor the end user should need to adjust the ibis model to achieve
accurate results. The variations you saw were due to your input waveform
being asymmetric relative to the B element input thresholds. End users
using the B element must also be aware of the input requirements, but the
majority of end users will probably be using other programs like XTK,
Hyperlynx, or Spectraquest that would not have this type of issue because
there is no "core logic" waveform, the buffer transitions are controlled
directly by the software.

Jeremy

-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On
Behalf Of RODRIGUEZ_LECONA_RAMIRO
Sent: Wednesday, October 20, 2004 4:06 PM
To: ibis-info@eda.org; ibis-users@eda.org
Subject: [IBIS-Users] matching V-t curves

Jeremy, Michael, Arpad and everybody:

My main concern is that as an IBIS maker I can adjust the output duty-cycle
and delay in the correlation process because I have a reference
(transistor-level model) but for the end IBIS user the adjustment may take
several attempts and even not to obtain the correct duty cycle.
It is the job of end IBIS user to make this adjustment?
If it is not then he/she may to evaluate our model like “marginal” or
“unacceptable” because in a first approach he/she sees a wrong waveform.

Best regards,

Ramiro Rodriguez
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Received on Wed Oct 20 19:36:28 2004