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nige2000

spectrum noise analog discovery 2

Question

hi 

im running a spectrum on an audio amplifier, i cant seem to get lower noise than circa -70-75db 

im i doing something wrong or is this the lowest i can expect?

 

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Hi @nige2000

In the Spectrum Analyzer with AD, set the Top to 0dBV or configure the range for scope inputs under Channel options to 5V. This way you will get 14bits of ADC on 5V pk2pk range. This 0.3V resolution will provide lower noise floor than 50V pk2pk range with 3mV resolution.

You might find useful information in the following post:

 

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