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SDS6000L User Manual
2 4 8 i n t . s i g l e n t . c o m
27 Bode Plot
27.1 Overview
The SDS6000L supports an automatic Bode plot function. This function provides a frequency response
curve of the device-under-test as well as the interface for output sweep parameter control and data
display settings. At this time, either the built-in waveform generator or one of the SIGLENT SDG series
arbitrary function generators are supported. During the sweep, the oscilloscope configures the
generator output frequency and amplitude and then compares the input signal to the output of the DUT.
Gain (G) and phase (P) are measured at each frequency and plotted on the frequency response Bode
plot. When the loop response analysis is complete, you can move the markers on the chart to see the
gain and phase values measured at each frequency point. You can also adjust the scale and offset
settings for the amplitude and phase plots.
Click Analysis > Bode Plot to recall the Bode plot dialog box:
A. Turn on/off the Bode plot
B. Configure the Bode plot (DUT, AWG connection,
sweep parameters)
C. Turn on/off the operation
D. Set display parameters, including coordinate axis,
trace visibility, and cursors
E. Data list. Open the data list of the Bode plot to
view the curve data, save the data results to a
U-disk or recall it from a U-disk
F. Set the measurement parameters. Parameter
measurement of the scanning curve includes
upper cut-off frequency (UF), lower cut-off
frequency (LF), bandwidth (BW), gain margin
(GM), and phase margin (PM)
G. Quickly print the specified Bode Plot waveform
area to the storage.
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