User`s guide

RIGOL Chapter 6 To Make Measurements
DS1000Z User’s Guide
6-48
1. Operation
Press Display to enable or disable the FFT operation function. When it is
enabled, the time domain waveform and frequency domain waveform are
displayed in separate areas on the screen by default, as shown in
Figure 6-1. In
the figure, the FFT sample rate equals the product of 100 divided by the current
horizontal time base.
2. Select Source
Press Source to select the desired channel (CH1, CH2, CH3 or CH4).
3. Vertical Offset
Press Offset and use to adjust the vertical offset of the operation result.
4. Vertical Scale
Press Scale and use to adjust the vertical scale of the operation results.
5. Center Frequency
Press Center to adjust the frequency of frequency domain waveform relative to
the horizontal center of screen.
6. Horizontal Scale
Press Scale and use to adjust the horizontal scale of frequency domain
waveform.
7. Select Window Function
Spectral leakage can be considerably decreased when a window function is used.
DS1000Z provides six kinds of FFT window functions which have different
characteristics and are applicable to measure different waveforms. You need to
select the window function according to different waveforms and their
characteristics. Press Window to select the desired window function and the
default is “Rectangle”.