Grant Mathieson

Hi Attila, Yes, I see that Scope and Scripting can do it, thank you. But I want to get it working in Logger. This is because I have signal changes that occur in the 10 ns to 100 ns timescale, but these occur in response to inputs that change over 0.1 s to 10 s. The Record mode in Scope seems limited by buffer size. Is it any better in Logger? I also want to log the difference between Ch1 and Ch2, and preferably calculate the AC RMS, Peak2Peak, rise/fall time of that difference in Logger. Those calculations are trivial in Scope. Any advice would be appreciated. I'll keep trying in the meantime. Thank you. Regards, Grant

Thanks Attila, but I still have not got this working in Logging. The same error re-appeared. When I changed the Scope script to Scope1. etc., that stopped working. BTW I'm only using one scope at present. Thanks for the tip on addressing measurements in short form. In Scope, I used Scope.measure("Phase") and it gives identical numbers to the long form script. Any other advice?

Any advice on how to get a phase measurement (between Ch1 and Ch2) included in Logging? Digilent offer the following code, which works fine for me on Scope, but not (so far) Logging. I get the error, "Uncaught exception at <anonymous script, id=2091515652512>:6: ReferenceError: Can't find variable: Scope" Thanks in advance. Version from Digilent // initialize local variables var sum1 = 0 var sum2 = 0 var sum12 = 0 // for better performance get and use local copy of data array var d1 = Scope.Channel1.data var d2 = Scope.Channel2.data var c = d1.length for(var i = 0; i < c; i++){ sum1 += d1*d1 sum2 += d2*d2 sum12 += d1*d2 } sum1 /= c sum2 /= c sum12 /= c // last line of code is the measurement value acos(sum12/sqrt(sum1*sum2))*180/PI Version I use on Scope but does not work on Logging var sum1 = 0 var sum2 = 0 var sum12 = 0 var d1 = Scope.Channel1.data var d2 = Scope.Channel2.data for(var i = 0; i < d1.length; i++){ sum1 += d1*d1 sum2 += d2*d2 sum12 += d1*d2 } sum1 /= d1.length sum2 /= d1.length sum12 /= d1.length acos(sum12/sqrt(sum1*sum2))*180/PI