PicoScope 7 Automotive
I have not been able to find this basic piece of information anywhere online so I would really appreciate the help, thanks in advance!!!!
To invert your waveform in PS6 you can use the math channel function
Click on Tools>Math Channels and Invert A or B from the Built in math channel menu
To create your own "invert" math channel you can click on Create and type the formula -A to invert channel A or use any other letter to represent the channel you wish to invert
Could you also try PicoScope 7 Automotive here https://oem.picoauto.com/p7beta/download
To invert a waveform in PS7, click on the desired channel option button and select Invert
I hope this helps, take care.....Steve
I followed your guide to invert waveform by creating the math channel. My problem is that while doing it, it also inverts range. E.g. I measure secondary COP voltage with coil/plug adapter and HT probe. I set range from -5000 V to 20 000 V to have detailed picture. Because the wave is inverted, the spike is pointing downwards instead of upwards and thus overreaching the -5000V range. When I use math channel to invert the signal, the spike is cut at 5000 V, because the range is now from 5000 V to -20 000 V. What would be your solution?
If you're using PS7 then you can select the ignition probe to change the waveform depending on whether the ignition system is positive or negative fired.
To change click Channel Options > Probes > Secondary ignition
If using PS6 select the channel options then in the probe drop down menu select with inverted or pos to change the waveform.
I hope this helps.
Glad that helps.
If you have the BNC+ probes then the option to select either positive or negative firing should be in the vertical, range selection, on the channel options.
I'll see if I have one to hand and send you screenshot.