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ADE calculator function question

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

Andrew Beckett over 12 years ago

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.
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potsticker over 12 years ago

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
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Andrew Beckett over 12 years ago

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.
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potsticker over 12 years ago

hi Andrew,
it is because it takes 10us for the transient waveform to stabilize to generate proper waveform.
thx

Frank
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potsticker over 12 years ago

hi Andrew,
i was able to later use the delay function which allowed me to specify the start time for the measurement. thanks.
Frank
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Andrew Beckett over 12 years ago

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.
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