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Frequency Sweep Mode
12.View the calibrated Smith chart.
13.Calculation of the series resistance at the series resonance frequency:
To calculate the series resistance of the quartz filter you need to subtract
50 Ω from the real part measured with cursor 1. The reason for this is that the
reflection measurement circuit "sees" the quartz filter in series with the 50 Ω
termination of the channel 2 input.
The Trace 2 columns of the table display the real and imaginary parts of the
measurement results at the frequencies marked by the cursors.
Result: = 70.01 Ω – 50 Ω = 20.01 Ω
Your result may slightly differ because every quartz filter and measurement
setup is different.
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