Measurement of Transient Responses in AGC Circuits using the Audio Analyzers UPL and UPD

In many applications, circuitries with automatic gain control are used, for example in the fields of tape recording or hearing aids. This application note describes the typical characteristic of these control circuitries and the difficulties in measurements using oscilloscops. With the audio analyzers UPL and UPD these measurements can be done much easier, the analysis can be done manually or automatically by using a special software tool.
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