Improving Time Domain Network Measurements
Removing Measurement Errors
10-12
In both cases, the measured waveforms are stored and subtracted directly from
the measured DUT response before the response is filtered. Ideally, these
normalization waveforms are flat lines. Any non-flatness or ringing is
superimposed on the measured DUT response and represents a potential
measurement error source. These errors are not related to the magnitude of
the response of the DUT. Therefore, it is valid to subtract them directly. Notice
in Figure 10-9 that the errors present in the TDR normalization waveform
(bottom) are also visible in the measured DUT waveform (top), particularly at
the left side of the figure.
Figure 10-9
Errors present in the TDR normalization waveform (bottom) are visible in the measured waveform
(top)
To Next Page
Loading...
