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 ADE calculator function question 

Last post Mon, Jun 24 2013 8:37 PM by Andrew Beckett. 6 replies.
Started by potsticker 24 Jun 2013 11:37 AM. Topic has 6 replies and 1032 views
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  • Mon, Jun 24 2013 11:37 AM

    ADE calculator function question Reply

    hi,

    i have a question about calculator function.
    Q1: i used to use in hspice the .measure statement of
    find v(a) when v(b)=v(c)



    but i don't know what function could acheive the same function in the ADE calculator.

    Q2: i am also trying to find the delay from when
    v(b) crosses v(c)     to when v(a)=0.9v (for example)
    how can i do this in the calculator?

    I appreicate any help. thanks.

    Frank

    • Post Points: 20
  • Mon, Jun 24 2013 1:02 PM

    Re: ADE calculator function question Reply

    Frank,

    Something like this:

    A1. value(VT("/a") cross(VT("/b")-VT("/c") 0.0 1 "either"))

    A2. cross(VT("/a") 0.9 1 "either")-cross(VT("/b")-VT("/c") 0.0 1 "either")

    Regards,

    Andrew.

     

    • Post Points: 20
  • Mon, Jun 24 2013 1:24 PM

    Re: ADE calculator function question Reply

    thanks Andrew, i  will give it a try now.

    is there a way to tell the calculator to wait T seconds, before doing the evaluation?

    Frank

    • Post Points: 20
  • Mon, Jun 24 2013 1:28 PM

    Re: ADE calculator function question Reply

    Why would you want to do that? Sounds a bit odd to me... (there is a way, but I doubt very much that this is really what you want to do). Perhaps you can explain exactly what you're trying to do?

    Andrew.

    • Post Points: 20
  • Mon, Jun 24 2013 3:50 PM

    Re: ADE calculator function question Reply

    hi Andrew,

    it is because it takes 10us for the transient waveform to stabilize to generate proper waveform. 

    thx

     

    Frank

    • Post Points: 5
  • Mon, Jun 24 2013 4:16 PM

    Re: ADE calculator function question Reply

     hi Andrew,

    i was able to later use the delay function which allowed me to specify the start time for the measurement. thanks.

     Frank

    • Post Points: 20
  • Mon, Jun 24 2013 8:37 PM

    Re: ADE calculator function question Reply

    Frank,

    Ah, I thought you were talking about a real time delay rather than simulation time...

    You can also use functions such as clip to extract just a portion of the waveform.

    Kind Regards,

    Andrew.

    • Post Points: 5
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Started by potsticker at 24 Jun 2013 11:37 AM. Topic has 6 replies.