Frequency Response Analysis 19
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 247
• The Frequency Mode. Normally, you Sweep through a range of frequencies,
making measurements. However, when debugging, you can select Single to
make measurements at a single frequency.
• The start and stop frequencies in the sweep, as well as the number of points
per decade.
• The channels probing the input and output.
• The waveform generator amplitude and expected output load impedance.
To specify different amplitudes for different decades, select Amplitude Profile.
The output impedance of the Gen Out signal is fixed at 50 ohms. However,
the output load selection lets the waveform generator display the correct
amplitude and offset levels for the expected output load. If the actual load
impedance is different than the selected value, the displayed amplitude and
offset levels will be incorrect.
5 To run the frequency response analysis, click the Run Analysis.
Gain and Phase measurements are plotted and added to a results table as the
frequency sweeps from the start frequency to the stop frequency.
To view and save the analysis results
When the frequency response analysis completes, Gain and Phase measurement
results versus frequency are plotted in a Bode plot, log-scaled frequency grid and
listed in a Results area table.
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