Picoscope vs USB Autoscope Battery Test and ElPower Test

Let's perform the Battery Test from Picoscope and the ElPower test from USB Autoscope.
We will use APPA36T current transducers.
We can compare the signals recorded with two devices. The analysis results are almost the same - the battery must be replaced.
After replacing the battery, we can perform the Compression Test.
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[@pablodanielcaballero5723]

The lowest voltage is 1 volt apart, between an oscilloscope and another. And the ripple is 325 mv apart, then the other results are almost the same. The question is which of the teams measured badly?

[@Daaremikkel]

The measurement algorithm of these devices is different.
Pico measured the maximum amplitude or peak to peak of the total ripple, whereas the USB Autoscope measured the actual rectifier ripple from the diodes in the alternator. A major cause of extra measured ripple is the alternator field being turned on and off rapidly, since the field is PWM controlled on most charging circuits. Ignition coils and injectors turning on and off will generate some ripple as well

[@lopezautotechtips568]

How much it’s the usb labscope?

[@Daaremikkel]

You can contact me directly or check this website.
autoscope.eu/products/