TNP #20 - Stanford Research Systems SR830 DSP Lock-in Amplifier Teardown, Repair & Experiments

Описание к видео TNP #20 - Stanford Research Systems SR830 DSP Lock-in Amplifier Teardown, Repair & Experiments

In this episode Shahriar takes a look at a SRS SR830 DSP Lock-in amplifier. The repair of the instrument is fairly simple and provides a quick look at the internal construction of the unit.
The instrument is then used for characterizing nonlinearities of a pair of matched diodes in large-signal operation. A Tektronix 4-Series is also used alongside the SR830 in DDC mode to show the harmonic behavior of the DUT in frequency domain. The SR830 is able to discern extremely small variation in temperature between the diodes and the resultant 2nd order harmonic changes in both amplitude & phase.

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