Text preview for : 5992-0198EN Measuring High Impedance Sources Using the U8903B Audio Analyzer - Application Note c201 part of
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Measuring High Impedance Sources
Using the U8903B Audio Analyzer
Application Note
Introduction
This note details the input impedance of the U8903B Audio Analyzer, and shows
that this needs to be understood and carefully considered when measuring high
impedance sources.
A method of using an impedance matching attenuator to overcome high
impedance measurement problems is described and a simple accessory is
demonstrated which uses the U8903-109 BNC accessory kit.
Methods for aligning such a matching attenuator and compensating for its loss
are shown alongside the ease with which frequency response measurements can
be made on the U8903B.
03 | Keysight | Measuring High Impedance Sources using the U8903B Audio Analyzer