Power analysis (option R&S RTE-K31)
R&S
®
RTE
984User Manual 1326.1032.02 ─ 20
"Autoscale the signals"
Automatically selects the most appropriate scale for the display of the
results.
"Keep present settings"
The present display settings are not changed.
Remote command:
POWer:MODulation:AUTO on page 1958
Report comment
In this field you can write a comment that is displayed in the measurement report, for
example, a measurement description.
Execute
Starts the "Modulation Analysis" measurement.
Remote command:
POWer:MODulation:EXECute on page 1958
16.4.2 Dynamic on resistance
The "Dynamic ON Resistance" analysis measures the resistance of a switching device,
during operation. Because voltage and current may vary in time, the resistance is not
constant, thus it is called dynamic ON resistance. It is defined as the ratio dV/dI.
The resistance-related voltage should be measured during a stable part of the switch
node waveform, when the undershoot and ringing have decayed, after the high-to-low
voltage transition.
Required probes:
●
Differential voltage probe
●
Current probe
16.4.2.1 Dynamic on resistance results
The results of "Dynamic on Resistance" measurements are provided in two ways:
●
The diagram shows the graphical presentation of:
– the voltage waveform
– the current waveform
●
The result box displays the dynamic on resistance value.
To measure and display the dynamic on resistance, the instrument uses the following
measurements and waveforms:
●
"Meas 5" to measure the amplitude of the voltage
●
"Meas 6" to measure the amplitude of the voltage
Control loop
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