Horizontal Scale - Rigol MSO1000Z series User Manual

Chapter 6 MATH and Measurement
waveform corresponding to the horizontal center of the screen.

4. Horizontal Scale

Press Hz/Div and use
domain waveform.
5. Vertical Position
Press Offset and use
6. Vertical Scale
Press Scale and use
7. Select Window Function
Spectral leakage can be considerably decreased when a window function is used.
MSO1000Z/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 the waveform to be measured
and its characteristics. Press Window to select the desired window function and
the default is "Rectangle".
Table 6-1 Window Function
Window
Rectangle
Blackman
Hanning
Hamming
Flattop
MSO1000Z/DS1000Z User's Guide
to adjust the horizontal scale of the frequency
to adjust the vertical position of the operation results.
to adjust the vertical scale of the operation results.
Characteristics
The best frequency
resolution;
the poorest amplitude
resolution;
similar to the situation
when no window is
multiplied.
The best amplitude
resolution;
the poorest frequency
resolution
Better frequency
resolution and poorer
amplitude resolution
compared to Rectangle
window.
A little bit better
frequency resolution
than Hanning
Accurate measurement
Waveforms Suitable for
Measurement
Transient or short pulse, the signal
levels before and after the
multiplication are basically the same;
Sine waveforms with the same
amplitude and rather similar
frequencies;
Wide band random noise with
waveform spectrum changing
relatively slower.
Single frequency signal, search for
higher order harmonics.
Sine, periodic and narrow band
random noise.
Transient or short pulse, the signal
levels before and after the
multiplication are rather different.
Signal without accurate reference and
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