Waveform analysis
R&S
®
RTM3000
113User Manual 1335.9090.02 ─ 09
Figure 7-7: Unipolar PDM waveform with pulse width track M1 in green and period track M2 in blue
Figure 7-8: Bipolar PDM signal with pulse width track M1 in green and period track M2 in blue. For
PDM waveforms, pulse width and period are synchronous.
7.2.6.1 Settings for tracks
The determination of track values requires one threshold for unipolar PWM signals,
and two thresholds for bipolar PWM signals. When the pulse crosses the threshold, the
pulse width is measured and displayed as track value. To detect the real transitions of
the pulse signal, the hysteresis is used. The unit is set automatically.
Mathematics
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