ladies and gentlemen, i am a newbie to Hspice and i have few questions on it. 1. I have a differential clock output and i would like to measure the signal crossing points (the time at which the clk_p and clk_n crossing event occurs.). I went thru the user manuals and tutorials. Though there are bunch of info on .MEASURE command, but i couldnt find a method to find the crossing of clk_p and clk_n. these values i need it to do the timing analysis. 2. My signals operates at 400mbps and i would like to generate the eye diagram. how to do that using hspice. can anybody give info on that? 3. I have one more question on Paramater sweep. I need to sweep two variables in my circuit. For example, .tran 0.01ns 20ns sweep length1 100 1000 100 .tran 0.01ns 20ns sweep length2 500 1000 250 i tried like above but always i am seeing only one variable in the waveform.( if i sweep var1 and var2 using the above method, tr1 and tr2 results with var1 displayed but i dont know for which value of var2 the sweep happened.. The objective is, i am doing the SI analysis and i want to sweep the tracelengths of the topology. I want to try like the following for loop and print both length1 and length2. for length1=100 to 1000 step 100 { for length2=500 to 1000 step 25 } thanking you in advance. Also i would appreciate if anybody can share any advanced / complex examples on SI analysis using hspice that helps to improve the efficiency and saves time. thanks, kumar Share files, take polls, and discuss your passions - all under one roof. Go to http://in.promos.yahoo.com/groups ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu