Measuring process
50 Power Analyzer NORMA 4000, NORMA 5000
EO1111G REV G
drücken Sie nochmals die Funktionstaste rms/h01.
8.4 Fast Fourier analysis
Fast Fourier transformation (FFT) allows for the analysis of the
individual frequency components of a signal. The harmonics may
be viewed in graphical or tabluar format as percentages of
fundamental H01.
Press measuring keys 1...n to call up the desired values, e.g.
values measured at channels 1.
Press measuring key Fast Fourier analysis.
The frequency analysis is shown.
The following function keys are available:
Function key Description
lin/log
Switch between linear and logarithmic Y axis
mode
View harmonics
zoom
Shift X axis
tab/gra
Switch between table and graphic display
Detail
Switch between U, I and P of one phase; switch
between displays of 1 or 3 values
Freq
Select frequency range
8.4.1 FFT mode
You have the option choose between a linear or logarithmic Y-axis.
By using the cursor keys, you can adjust the positions of the axes.
Press function key lin/log.
The scale of the graph changes from linear to logarithmic or
vice versa (here: change to logarithmic).
Adjust scale
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