User`s guide

Chapter 6 To Make Measurements RIGOL
DS1000Z User’s Guide
6-49
Table 6-1 Window Functions
Window Characteristics
Waveforms Suitable for
Measurement
Rectangle
The best frequency
resolution;
the poorest amplitude
resolution;
similar to the situation
when no window is
multiplied.
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
relatively slowly changing
waveform spectrum.
Hanning Better frequency resolution;
poorer amplitude
resolution.
Sine, periodic and narrow band
random noise.
Hamming A little bit better frequency
resolution than Hanning
Transient or short pulse, the
signal levels before and after the
multiplication are rather different.
Blackman The best amplitude
resolution;
the poorest frequency
resolution
Single frequency signal, search
for higher order harmonics.
Flattop Measure signal preciselly. The signal that no accurate
reference but require accurate
measurements
Triangle Better frequency resolution. Narrowband signal with strong
interference noise.
8. Set the view Mode
Press View to select “Half” (default) or “Full” display mode.
Harf: the source channel and the FFT operation results are displayed separately.
The time domain and frequency domain signals are displayed clearly.
Full Screen: the source channel and the FFT operation results are displayed in
the same window to view the frequency spectrum more clearly and to perform
more precise measurement.
Note: In FFT mode and when MATH is the active channel, you can also press
HORIZONTAL
SCALE to switch between “Half” and “Full”.