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Problem with a waveform

Hello,

I'd like to ask you if anyone would help me with this problem:

I am trying to make transient analysis where my parameter is "Rsens" variable. When the simulation is done, I have multiple values across parameter sweep shown below:

When I right-click the value and select "Plot All", I can see the points connected by lines. The problem is that I cannot use any calculator functions (such as deriv) because (I think) the plot is not considered as waveform and it says evaluation error.

Here are the functions.

Tosc1 ---- average((1 / freq(VT("/OSC_SENS_OUT") "rising" ?xName "cycle" ?mode "auto" ?threshold 0.0))) --- this gives me the values for each parameter.

when I try to use deriv, it does not work, saying evaluation error

when I try to make a slope from two points using this:

((ymax((1 / value(freq(VT("/OSC_SENS_OUT") "rising" ?xName "time" ?mode "user" ?threshold 0.0) VAR("StopTime"))) ?overall t) - ymin((1 / value(freq(VT("/OSC_SENS_OUT") "rising" ?xName "time" ?mode "user" ?threshold 0.0) VAR("StopTime"))) ?overall t)) / (xmax((1 / value(freq(VT("/OSC_SENS_OUT") "rising" ?xName "time" ?mode "user" ?threshold 0.0) VAR("StopTime")))) - xmin((1 / value(freq(VT("/OSC_SENS_OUT") "rising" ?xName "time" ?mode "user" ?threshold 0.0) VAR("StopTime"))))))

it still does not work.

NOTE: These functions work only in calculator. When I pass it to the maestro, it does not work.

Any help?

Andrew Beckett 5 months ago

You would need to change the EvalType column to sweep, corners, or all. In essence, the default EvalType is "point" which means that the expression only sees a single simulation result. With EvalType set to sweep, corners, all (or now "any") you can have a function that operates across a set of data.

Some info here: Measuring Across Corners, Sweeps and All (Video) and Performing Measurements Across Sweeps and Measurements Across All in the ADE Assembler (Video)

Andrew
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