Rigol MHO2034 handleiding
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to set the start frequency of the frequency-domain waveform with the pop-up
numeric keypad. You can also set the value by using the specified knob. Its range
is from 0 Hz to (stop frequency -10 Hz). Stop frequency refers to the frequency
at the right side of the window. Click or tap the input field of End Freq to set the
stop frequency of the frequency-domain waveform with the pop-up numeric
keypad. You can also set the values by using the specified knob. Its range is from
(start frequency + 10 Hz) to 1 GHz. Its default value is 10 MHz.
Unit of Vertical Scale/Offset
Selects "dBm/dBV" or "Vrms" as the unit for
Scale and Offset.
Window Function
Spectral leakage can be considerably decreased when a window function is used. The
oscilloscope provides 6 FFT window functions which have different characteristics and
are applicable to measure different waveforms. You need to select the window
function according to the characteristics of the waveform to be measured. Click or tap
the drop-down button of Window to select the desired window function.
Table 9.1 Window Function
Window
Function
Characteristics
Waveforms Applicable to the
Window Function
Rectangular
Best frequency resolution
Poorest amplitude resolution
Similar to the situation when no
window is applied.
Transient or short pulse, the signal
levels before and after the
multiplication are basically the same
Sine waveforms with the same
amplitudes and rather similar
frequencies
Wide band random noise with
relatively slow change of waveform
spectrum
Blackman-
Harris
Best amplitude resolution
Poorest frequency resolution
Single frequency signal, searching
for higher order harmonics
Hanning
Better frequency resolution and
poorer amplitude resolution
compared with Rectangular
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
Math Operation
MHO2000 User Guide
136
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Productinformatie
| Merk | Rigol |
| Model | MHO2034 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 47982 MB |
