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Variation in voltages measured during cold start of DAC. Expected?


Major Contributor
Forum Donor
Feb 27, 2019
Yeah, I suspect that when measure at different time, the number might be different by 0.001V, due to error range of multi meter. But, I expect the number to stay stable when doing measurements.
The error of a multimeter usually is much higher than +/- the lowest digit. So changes between measurements could stem from the multimeter and not from the DUT.

However, as you wrote ...
It was interesting to note that a E30 could not stay stable for a while when cold boot. X16 was very stable (powered on for a full day before measurements).
... that the X16 is more stable than the E30 hints that it's not the multimeter which is wrong.
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