Must correlate correlable :) What you are fundamentally doing here is comparing maximum potential output power (watts) to current output. Which is directly tied to phase between voltage and current. TRMS(A) = sqrt(integral(A^2)/T) TRMS(B) = sqrt(integral(B^2)/T) √P(A*B) = sqrt(integral(A*B)/T)* ABS(...

Little lifehack to make auto-measurements work on TRMS trace: sqrt(integral(A*A)/T) + freq(A) - freq(A) This will gate function to area where freq is known. This has following benefits: - whole trace measurements more accurate since "wild ride" in beginning is excluded - gated measurements start to ...

BTW there is important topic about TRMS, there are some tricks to getting it work correctly should you experiment with graphing:
topic29531.html

Maybe this helps a little: https://www.eevblog.com/forum/testgear/what-you-do-with-math-channels-on-oscilloscope/msg1106436/#msg1106436 It's correlation formula. Will only show phase if the shape is exactly the same (except phase shift). For in-phase signals, it'll measure the similarity between wav...

If you also remember that integral is calculating the area under a curve, and by doing A*A you are rectifying the signal you should be able to understand the rest. ...and there also lies trap for young players. With this method not only duty cycles but also areas under curve must be exactly identic...

FYI there is newer method around: "New accurate and fast phase shift calculation formula" https://www.picotech.com/support/topic31641.html Example, phase measured on 100MHz sines: at 50GS/s: 6.387° PS6000__phase_test__50GSas__short.jpg at ~1MS/s: 6.372° (250x below "practical" Nyquist) PS6000__phase...

Hi, testing PL application 6.1.6 with 2408B on subject of 1kHz logging capability run into some issues: - sample number and time cannot be had in same table - time formats do not offer milliseconds (eg HH:mm:ss.mmm) - table goes down only to 100ms/line - CSV export mimics table eg gives min 100ms/li...

Hello, I did look into theory a bit and have no issues with Min, Max, Peak, Average functions as such. For example during actual capture Min/Max resume positions +-0.5 sample apart from Average, and have logical temporal sync between them. However, global timing of the traces is really broken and I ...

Hi, thanks for effort. I did sent additional info to support e-mail since attachments too big to fit here.

Hi, here is picture of physical setup and two PSDATA files with 32 frames buffered for both cases. Only difference between jitter / no jitter scenarios is switching ON/OFF not connected Ch C (or B).

Any feedback? Is it known bug? Needs further investigation? Checked for same issue on PS 6000 scope - luckily not present.

ETS trace develops jitter if more than 2 channels enabled, with exception: Signal on A,B stays ok when enabling more channels, however signal timing on A,C or A,D breaks when enabling more channels. Possibly there are more ok/notok combinations. Jitter is huge for 20GS/s operation and makes measurem...

Actually if you just need numerical phase in -90°...90° range then there is trick: ((((atan(1/tan(pi*(A/10000)))/pi)+(A/10000))*-((atan(1/tan(pi*(B/10000)))/pi)+(B/10000)))+0.25)/0.002777777 * (((atan(1/tan(pi*T))/pi)+T)*2) What you do is create discrete helper function that will have value -1 for T...

The formula works perfectly well. It gives the absolute value of the phase shift, but it doesn't give information about the direction of the phase shift.Thanks! Hi, good to hear formula works. However do not think it is possible to get direction using present function set on math channels. You migh...

How to work around issue with alarms - on each capture/save it will force focus on PS6 window, even if working in some other Windows program? With some hit and miss clicking can minimize PS6 - but Windows (7 in my case) GUI in general will still be very twitchy, especially Explorer. I can imagine th...