Pdev time domain mode


    Time domain dumping of data was added to the pdev spectrometer in aug07. To test this, data was taken with the if/lo noise source going through the temporary mixers. The setup was:
    The plots show spectra from the time domain data. (.pdf):
    There are two separate mixer chassis (that are not identical) being  used: one for the lower band and one for the upper band. Both mixer chassis are being power by an external dc power supply. The upper band (lots of dc)  mixer has an extra negative voltage being provided to it (without the corresponding common).

processing: x101/070828/pdev.pro

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