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How to display impedance in ohms on a time-domain measurement.

The normal display of S11 is reflection coefficient, not impedance. If you wish to have your time-domain data displayed as impedance, and you are using an Agilent 8510, 8753, or 8720 series VNA, then the "Conversions" function can do the job. Follow these steps:

  • Measure S11
  • Set frequencies and calibrate
  • Turn transform on
  • Format = Real
  • Measure > Conversion > Z:refl
  • Scale = 1
You now have a time-domain display of impedance at 1 ohm/div.
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