How to Extract Parasitic Probe Capacitance of Smart Tweezers?

// November 12th, 2012 // Smart Tweezers Questions and Answers

The parasitic probe capacitance depends on the distance between the tips, that is it will be different for different measured component sizes.  To obtain the value of capacitance of the Smart Tweezers probes, you have to do the following:

  1. Select mode for capacitance measurements by setting MEASURE->MODE->CAP. Letter ‘C’ will indicate that you selected capacitance measurement mode.
  2. Select measurement frequency 10 KHZ by setting MEASURE->FREQ->10KHZ
  3. When you squeeze the probes until the size of the gap is equal to the size of component which you are going to measure, the parasitic capacitance value will be displayed on the screen. This is the value that you have to subtract from any measured capacitance of the same size. Typical parasitic probe capacitance is about 1.5 pF.

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