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SDS1000X-E User Manual
123
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Note:
Signals with DC components or deviation would cause error or deviation of the FFT
waveform components. To reduce 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.
Note: please refer to the cursors chapter to obtain the method of using cursors.
To measure FFT waveform:
To make cursor measurements, press the
Cursors
button, 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.
Math Function Operation
The oscilloscope supports math function operation including differential (d/dt), integral (∫dt)
and square root (
).
Differentiate
d/dt
(differentiate) calculates the discrete time derivative of the selected source.
Where:
d = differential waveform
y = channel 1, 2, 3, or 4 data points
i = data point index
Δ t = point- to- point time difference
The
dx
option under d/dt math function operation menu shows the point- to- point time
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