First option sounds right to me too. If I'm reading this correctly, the second option essentially says the PWL source triggers at simulation time 0 no matter what. I don't see why that should be, so I vote for option 1. Todd. Todd Westerhoff High Speed Design Group Manager Cisco Systems 1414 Massachusetts Ave - Boxboro, MA - 01719 email:twesterh@xxxxxxxxx ph: 978-936-2149 ============================================ "Always do right. This will gratify some people and astonish the rest." - Mark Twain -----Original Message----- From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Mike LaBonte (milabont) Sent: Thursday, October 27, 2005 9:07 AM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: Event triggered PWL sources question Arpad, The first option sounds right to me too. Mike -----Original Message----- From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad Sent: Wednesday, October 26, 2005 3:49 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Event triggered PWL sources question Importance: High Hello everyone, I have a question on how the event triggered PWL sources should be implemented. Please comment ASAP, since I am in the middle of doing them now and I need your answers right away. The goal is to have a something vs. time table in the PWL source which can be reset to t=0 any time an input signal crosses a certain threshold. So far so good. Question: What should be the behavior be before the first event occurs? For example, if the PWL source contains a table that is a waveform defined for 0 to 2 ns, and the first event occurs at t=5ns, should the output be the first point of the table up to 5ns, and then start the waveform, or should the waveform begin at t=0 run its course once, and then start over at 5ns and at every subsequent event? Our library does the second one currently, but I think the first description is the better (or more correct) one. Please comment. Thanks, Arpad ==================================================== --------------------------------------------------------------------- IBIS Macro website: http://www.sisoft.com/ibis-macro IBIS Macro archives: //www.freelists.org/archives/ibis-macro To unsubscribe send an email: To: ibis-macro-request@xxxxxxxxxxxxx Subject: unsubscribe --------------------------------------------------------------------- IBIS Macro website: http://www.sisoft.com/ibis-macro IBIS Macro archives: //www.freelists.org/archives/ibis-macro To unsubscribe send an email: To: ibis-macro-request@xxxxxxxxxxxxx Subject: unsubscribe --------------------------------------------------------------------- IBIS Macro website: http://www.sisoft.com/ibis-macro IBIS Macro archives: //www.freelists.org/archives/ibis-macro To unsubscribe send an email: To: ibis-macro-request@xxxxxxxxxxxxx Subject: unsubscribe