Math
92
• Press the
Markers on Peaks
softkey to set the markers on peaks, and press the
Markers on harmonics
softkey
to set the markers on harmonics.
• Press the
Show Table
softkey to show the amplitude of the markers; press the
Show Frequency
softkey to
show the frequency value of the markers, and press the
Show Delta
softkey to show the delta amplitude between
markers.
Figure
shows the FFT waveform displayed on the split screen and the peak tool is turned on:
Figure 9.11
FFT Waveform
Note:
• Signals with DC components or deviation would cause error or deviation of the FFT waveform components. To re-
duce the DC components, set the Channel
Coupling
to AC.
• To reduce the random noise and aliasing frequency components of repetitive or single pulse, set the
Acquisition
of
the oscilloscope to Average.
Measure FFT Waveform
To make cursor measurements, press the
Cursors
key, and then press the
Mode
softkey to select
On
to turn the cursors,
Use the X1 and X2 cursors to measure frequency values and the difference between two frequency values (ΔX). Use the
Y1 and Y2 cursors to measure amplitude in dB and difference in amplitude (ΔY). You can find the frequency value at
the first occurrence of the waveform maximum by using the X at Max Y measurement.
Note:
Refer to the
section for a description on using cursors.
Summary of Contents for 2194
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Page 82: ...Serial Trigger and Decode 82 Figure 7 29 LIN Trigger ...
