Techniques for Simplifying Pulsed Measurements: Part 1

摘要

Performing a DC measurement starts with applying the test signal (typically a DC voltage), then waiting long enough for all the transients in the DUT and the test system to settle out. The measurements themselves are typically performed using a sigma-delta or integrating-type analog-to-digital converter (ADC). The conversion takes place over one or more power line cycles to eliminate noise in the measurements due to ambient power line noise in the test environment. Multiple measurements are often averaged to increase accuracy. It can take 100ms or longer to acquire a single reading using DC measurement techniques.