Hl YY Lau: I would like to see the exact end points of the Rising Waveform Max table because there is a numerical issue. The Warning Message should be issued only if the mismatch is equal to or greater than 2.0% of the total calculated swing. In this case the swing is from 1.71 to 3.10 V or 1.39, and 2% of this is 0.0278 V. Your actual mismatch 0.03 V - outside of the 2% tolerance. Howover the reported mismatch is 1.91%, and no Warning should have been issued. So your starting point might be rounded up to 1.74 from a smaller value - causing a Warning message, but the actual values used to calculate the persentages might be the unrounded values - inside the 2% tolerance. If this is the case, we are not doing the calculations and reporting correctly However, there could be other numerical issues. I would have to see the full model to determine this. Bob lau yy wrote: > Dear ALL, > > Can someone show me my mistake? The warning message like below. > > WARNING - Model DQ0: The [Rising Waveform] > with [R_fixture]=70 Ohms and [V_fixture_max]=3.1V > has MAX column DC endpoints of 1.74V and 3.10v, but > an equivalent load applied to the model's I-V tables yields > different voltages ( 1.71V and 3.10V), > a difference of 1.94% and 0.01%, respectively. > Thanks alot. > > > > rdgs > yylau > |------------------------------------------------------------------ |For > help or to subscribe/unsubscribe, email majordomo@eda.org |with just the > appropriate command message(s) in the body: | | help | subscribe ibis | > subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or > email a written request to ibis-request@eda.org. | |IBIS reflector > archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ > Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | > http://www.eda.org/pub/ibis/email/ E-mail since 1993 -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993Received on Thu Jul 7 17:57:15 2005
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