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How to find all the crossing of the signal

wgtkan

I used the cross function to get all the crossings and plot the waveform. But it didn’t display all the crossings.

 

I am trying to plot pulse vs temperature. This is what I have done. I performed a transient simulation in ADEL by specifying the stop time to 400ns.

 

Then did a parametric simulation of temperature for from -50C to 125C linear step size of 10C. It gave me the transient response at the specified temperatures.

I used the cross function to return the plot of the pulse vs temperature. The plot doesn’t look correct because it only gave me part of the time. It didn’t give me the whole pulse rang from (0-400ns)

How do plot the whole time vs temperature. (0-400ns) vs -50 to 125C

I am attaching the plot with this question.

 

 

Here is the argument that I gave to the cross function.

My output signal VT(“/Pout”)

Threshold value: 0.75

Edge number: 2

Edge Type: either

Number of Occurrences: Single I tried multiple also but it plot time vs time.

Plot/print vs: time

 

My understanding is that the cross function returns the x value where a signal crosses the threshold y value.

Thank you.

Parents

  • Dear wgtkan,

    If you are trying to plot pulse width as a function of temperature, what I might suggest is that you write an expression for the pulse width using a series of cross() functions. For example, the width of the first rising edge to falling edge pulse about a voltage threshold vthreshold, it might be something like:

    cross(pout vthreshold 1 "falling" nil nil)-cross(pout vthreshold 1 "rising" nil nil)

    where pout=VT("/Pout" ?result "tran-tran")

    Add this as a plotted output to your ADE-L outputs. Then, perform a parametric simulation as a function of temperature. The resulting ADE=L plot will display the measured pulse width as a function of the temperature range you specify in the parametric simulation. If you want to examine the pulse width of additional pulses, add expressions to the ADE-L Outputs that define the width of the additional pulses you want to study.

    Shawn

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  • Dear wgtkan,

    If you are trying to plot pulse width as a function of temperature, what I might suggest is that you write an expression for the pulse width using a series of cross() functions. For example, the width of the first rising edge to falling edge pulse about a voltage threshold vthreshold, it might be something like:

    cross(pout vthreshold 1 "falling" nil nil)-cross(pout vthreshold 1 "rising" nil nil)

    where pout=VT("/Pout" ?result "tran-tran")

    Add this as a plotted output to your ADE-L outputs. Then, perform a parametric simulation as a function of temperature. The resulting ADE=L plot will display the measured pulse width as a function of the temperature range you specify in the parametric simulation. If you want to examine the pulse width of additional pulses, add expressions to the ADE-L Outputs that define the width of the additional pulses you want to study.

    Shawn

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