RE: [IBIS-Users] WARNING Endpoint

Hello, Fabio,

The waveforms are normally generated with resistance around 50 ohms (typical
transmission line impedance).  1Kohm is too big.

You might also want to use s2ibis3, since several bugs and algorithmic
errors were fixed in the new version.

Best regards,
Lynne


"IBIS training when you need it, where you need it."

Dr. Lynne Green
Green Streak Programs
http://www.greenstreakprograms.com
425-788-0412
lgreen22@mindspring.com


-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf
Of Fabio BRINA
Sent: Friday, January 20, 2006 6:56 AM
To: ibis-users; ibis
Subject: [IBIS-Users] WARNING Endpoint

Hi  IBIS experts,

when I check  my  IBIS  model  I  optain  these warning:

WARNING - Model 'mod_out': TYP AC Rising Endpoints ( 0.00V,  4.97V) not
within
          0.099V (2%) of ( 3.11V,  3.94V) on VI curves for 1000 Ohms to 0V
WARNING - Model 'mod_out': TYP AC Falling Endpoints ( 0.02V,  5.00V) not
within
          0.100V (2%) of ( 3.14V,  3.96V) on VI curves for 1000 Ohms to 5V

I  know  what it means,  but  I  don't know if  I  have  to modify the
R_fixture to  eliminate it ( I fix R_fix=1k from the datasheet ).
morever in some IBIS editor this  Warning became an Error !
so  I  don't know if is an acceptable Warning.
( I use s2ibis2 v.2.1 )

What  do you think about?

many  thanks


Another type of question:
About IBIS Summit ( DATE 06 ), there is an expiry date to register on them?

thanks again.

Fabio.





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