Calibration issue

[flel]

So the range on the fluctuations were in the 0.01V range, which seemed too high. However, I suspected that the continuous measurements of the oscilloscope wasn't sufficiently accurate for static measurements, so I bit the bullet and bought a proper 4.5 digit multimeter. Indeed, after doing this I was able to successfully calibrate the NerdSeq CV outputs. The uTune "estimates" were within range (and more useful than the oscilloscope) but a well-calibrated multimeter was needed for reliable measurements.