PDA Noise

kirchs2
kirchs2
in Instrumentation and Mass Spectrometry
Our PDA's a getting older and we are noticing a increase in baseline noise on some of our smaller analyte tests.  Any ide

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  • kirchs2
    kirchs2
    My original question was cut off.  I was looking for any ideas on what may be causing increased baseline noise as the instrument ages.  Thanks.
  • Dan_Ramlose
    Dan_Ramlose
    Lamps get noisy as they age. Could be time for a new lamp. Could also be time to replace other components. Usually, you go from the lamp and work your way toward the photomultiplier (window, mirrors, grating) - just follow the light path and replace things one at a time until you have a good signal and low noise.

    Amp boards also get noisy but this usually looks different from old lamp and crazed optics noise.

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