Receiver Sensitivity Measurements Using U8903B
应用文章
Introduction
Sensitivity is a key specification for any radio receiver and is characterized by the minimum RF input level required to give a particular SINAD on the audio output. Traditionally this test involves the user manually reducing the RF level in fine steps whilst monitoring SINAD on an audio analyzer. This is a tedious, risk prone task since SINAD is an inherently noisy measurement. The task can of course be automated by some sort of test system under computer control. This however requires detailed knowledge of the measurement, extra equipment, controller and dedicated software.
This note shows how the test sequencer together with the GPIB master functionality in the U8903B can be used to easily make automated Receiver Sensitivity measurements that are reliable and repeatable.
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