measure dx ( delta ) between signals (the distance of the tt signal and the other corners )

Dear Hagar Henry,

Hagar Hendy said:

how to measure automatically using calculator the dx( delta)  between the typical typical signal and the other corners.

There may be more other more efficient or clever solutions, but suppose you separate your corner simulations such that you initially simulate your typical corners one test. Then, in a second test containing the remainder of your corner simulations, you can use the Calculator Calcval() function to refer to the x-value (time point) of your typical simulation and compute the time difference between the x value of each corner simulation at the y threshold value.

As an example, suppose your typical test name is "typ_run" and it has an output defined as x_typ that looks something like this:

x_typ = cross(v("/OUT" ?result "tran") 0.5 1 "rising" )

Then to use the value of x_typ in a second test, named for example "corner_run", you can refer to the value of x_typ using:

calcVal("x_typ" "typ_run")

Shawn

You don't need to do this with two tests. Simpler is to use a single test and measure your crossing point with an expression similar to that used by Shawn (I called it "crossPoint" in my case) and add a second output (which I called "dx"):

calcVal("crossPoint" "myTest") - calcVal("crossPoint" "myTest" ?cornerName "typ")

This will return 0 for the "typ" corner, and the difference to the typ corner for the rest of the corners. Of course, your corner names, output names and test names will differ from mine.

Andrew

Thanks  a lot i tried it now and it works