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 Settle Delays different between Pulse & Custom stimulus 

Last post Sun, Mar 13 2005 11:43 PM by archive. 1 replies.
Started by archive 13 Mar 2005 11:43 PM. Topic has 1 replies and 599 views
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  • Sun, Mar 13 2005 11:43 PM

    • archive
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    Settle Delays different between Pulse & Custom stimulus Reply

    sigxp & sigwave: PCB SI 610, Cadence SPB 15.2.

    1. Why does sigxp ONLY give Reflection measurements if for a PULSE simulation? With custom periodic stim, the measurements are ""NA"" if monotonic test fails. But this doesn't stop Pulse stim. results from reporting everything. Also, there's no apparent specs for ""Pulse"" in the stimulus dialog. Where does the simulator get the duty cycle and freq??

    2. Main question: All I did was change from Pulse to custom periodic (without changing freq in the stim dialog). The Settle Delays agree with a manual measurement in sigwave: from buffdly (driver into ref load) to load at vil/vih, but it's the UNLOADED TLINE PROP DELAY!
    The Pulse stim gives the apparently correct settle delays. Both have the same toplogy (loaded tline).


    Originally posted in cdnusers.org by Agathon
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  • Mon, Mar 14 2005 12:13 AM

    • archive
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    RE: Settle Delays different between Pulse & Custom stimulus Reply

    Forget the part of question one where I ask how are the Pulse specs obtained. User input in Preferences. Duh.


    Originally posted in cdnusers.org by Agathon
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Started by archive at 13 Mar 2005 11:43 PM. Topic has 1 replies.