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•
ZOOM: indicates that the measurement range is within the zoomed time base
region.
When you select "Zoom", you need to enable
System
.
Label
Label is used to set the label for the math operation results. For setting methods,
refer to descriptions in
Grid
For setting methods, refer to the descriptions in
Parameter Setting
•
When the operator is "Intg", click or tap the input field for the Offset menu item
and use the pop-up numeric keypad to set the DC offset calibration factor of the
input signal.
•
When the operator is "Diff", click or tap the input field for the Smooth menu
item and use the pop-up numeric keypad to set the number of smooth times for
the differential operation.
9.3
FFT Operation
FFT (Fast Fourier Transform) is used to transform time-domain signals to frequency-
domain components (frequency spectrum). This oscilloscope provides FFT operation
function which enables you to observe the time-domain waveform and spectrum of
the signal at the same time. FFT operation can facilitate the following works:
•
Measure harmonic components and distortion in the system;
•
Display the characteristics of the noise in DC power;
•
Analyze vibration.
In the Math menu, click or tap the drop-down button of Operator to select FFT to go
to the menu shown in
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Delayed Sweep
Channel Label
.
Figure 9.7
. Then configure the parameters of FFT.
Math Operation
To Set the Horizontal
in
To Set the Screen Grid
.
DS70000 User Guide
147
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