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approach for microamp measurements

Question asked by ken.edwards on Sep 3, 2020

Looking for the best approach to measure the sleep current of an IoT device using the N6705B/N6781 power analyzer.  A co-worker uses the scope and records the average current reading, and his values are quite a bit higher than mine.  I have used the data logger, and have seen two results using the auto ranging settings.  If I use a sample time of (approximately) 1 ms, the average current is approximate half compared to using a sample time of 100ms.  With the data logger, I take the sleep period and average the csv file output values.

We need advice so that we can be confident in the values so that we can accurately calculate battery life.