Hello, April, The 0.0s times after 5ns clearly need to be removed. There are also fewer than 100 valid lines in the table. This looks like a bug that should be reported to Ambrish Varma at NCSU. The reason you see no steps between these two lines 2.93nS 1.4534V 1.2431V 1.6337V 5.00nS 1.4534V 1.2457V 1.6337V is because s2ibis3 selects time points for best accuracy, instead of keeping evenly spaced time points. 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 _____ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of April.Hachenburg@smsc.com Sent: Friday, June 22, 2007 12:08 PM To: ibis-users@eda.org Subject: [IBIS-Users] time step question IBIS users, I have a questions regarding simulation time for the V-T curves. I'm using the s2ibis3 script with spectre to create my model. When I used a simulation time of 3.0ns, I noticed that one of the rising waveforms was still settling under min. condition. As a result, I increased the simulation time. When I did so, the simulations ran to about 3ns still, then suddenly jumps to the final simulation time. All the following values revert to zero. I've included an example below. Has anyone seen this issue? If so, how do I resolve it? Thanks, April [Rising Waveform] R_fixture= 0.1500k V_fixture= 0.0 V_fixture_min= 0.0 V_fixture_max= 0.0 |time V(typ) V(min) V(max) | 0.0S 1.1973mV 0.9612mV 1.4062mV 50.51pS 1.2588mV 1.0489mV 1.4461mV 0.10nS 1.4906mV 1.2259mV 1.5095mV 0.15nS 1.9668mV 1.2757mV 1.8304mV 0.20nS 1.8327mV 1.2233mV 2.6068mV 0.25nS 1.6557mV 1.1725mV 2.5690mV 0.30nS 1.4814mV 1.1666mV 1.9088mV 0.35nS 0.8598mV 1.1546mV 1.0696mV 0.40nS 0.4808mV 0.9128mV 0.5701mV 0.45nS 0.3503mV 0.5327mV 0.4217mV 0.51nS 0.2508mV 0.3639mV 0.4082mV 0.56nS 0.1778mV 0.2484mV 0.4607mV 0.61nS 0.1280mV 0.2066mV 0.7377mV 0.66nS 0.1119mV 0.1626mV 0.8004mV 0.71nS 0.1326mV 0.1308mV -4.2468mV 0.76nS 79.3558uV 86.8717uV 40.2760mV 0.81nS 68.8351uV 55.0637uV 0.4070V 0.86nS 0.1283mV 11.4705uV 1.0312V 0.91nS -0.5143mV -17.7110uV 1.4799V 0.96nS -4.6066mV -52.9933uV 1.6007V 1.01nS -13.5297mV -87.7087uV 1.6237V 1.06nS 11.9615mV -0.1011mV 1.6280V 1.11nS 0.1830V -0.1240mV 1.6301V 1.16nS 0.4741V -0.1881mV 1.6306V 1.21nS 0.8229V -0.2977mV 1.6308V 1.26nS 1.1539V -0.4366mV 1.6314V 1.31nS 1.3391V -0.5495mV 1.6322V 1.36nS 1.4080V -0.6636mV 1.6325V 1.41nS 1.4325V -0.8265mV 1.6328V 1.46nS 1.4405V -1.0689mV 1.6329V 1.52nS 1.4472V -1.4895mV 1.6330V 1.57nS 1.4499V -3.2821mV 1.6331V 1.62nS 1.4511V -8.6506mV 1.6332V 1.67nS 1.4518V -17.2909mV 1.6333V 1.72nS 1.4521V -21.9207mV 1.6333V 1.77nS 1.4522V -25.7696mV 1.6334V 1.82nS 1.4522V -20.9140mV 1.6334V 1.87nS 1.4522V 20.9336mV 1.6334V 1.92nS 1.4523V 36.7265mV 1.6334V 1.97nS 1.4525V 0.1150V 1.6335V 2.02nS 1.4527V 0.1640V 1.6335V 2.07nS 1.4529V 0.2180V 1.6335V 2.12nS 1.4530V 0.2661V 1.6335V 2.17nS 1.4530V 0.3576V 1.6336V 2.22nS 1.4531V 0.4671V 1.6336V 2.27nS 1.4531V 0.5537V 1.6336V 2.32nS 1.4532V 0.6729V 1.6336V 2.37nS 1.4532V 0.8132V 1.6336V 2.42nS 1.4532V 0.9478V 1.6336V 2.47nS 1.4533V 1.0134V 1.6336V 2.53nS 1.4533V 1.0858V 1.6336V 2.58nS 1.4533V 1.1636V 1.6336V 2.63nS 1.4533V 1.1870V 1.6337V 2.68nS 1.4533V 1.2040V 1.6337V 2.73nS 1.4533V 1.2175V 1.6337V 2.78nS 1.4533V 1.2270V 1.6337V 2.83nS 1.4534V 1.2327V 1.6337V 2.88nS 1.4534V 1.2387V 1.6337V 2.93nS 1.4534V 1.2431V 1.6337V 5.00nS 1.4534V 1.2457V 1.6337V 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA 0.0S NA NA NA -- This message has been scanned for viruses and dangerous content by <http://www.mailscanner.info/> MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with 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 e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993Received on Fri Jun 22 12:51:30 2007
This archive was generated by hypermail 2.1.8 : Fri Jun 22 2007 - 12:51:56 PDT