10. 10Appendix - 10.4. FFT Analysis
130
1WMPD4004444
10.4. FFT Analysis
10.4.1. Analysis Function
Time Scale Waveform (One Signal Analysis)
The time domain waveform of the input signal.
Linear Spectrum (One Signal Analysis)
Each frequency component G of the linear spectrum is defined as G = R + jI (with R being the real
number part and I being the imaginary number part).
The frequency domain waveform of the input signal enables the amplitude and phase of each frequency
component to be understood.
R and I are the result of multiplying the window function peak compensation coefficient k.
∑
−
=
=
1
0
)
(
k
N
i
i
W
N
Ｎ
: Sampling points;
W
(
i
)
: Window function
Real number part
Lin-Rel
R
Imaginary number part
Lin-Img
I
Amplitude
Lin-Amp
�
(R
2
+ I
2
)
Logarithmic amplitude
Log-Amp
20 × log
�
(R
2
+ I
2
)
Phase
Phase
tan
−1
(I/R)
RMS Spectrum (One Signal Analysis)
The frequency domain waveform of the input signal enables the amplitude (effective value) and phase
to be understood.
R and I are the result of multiplying the window function peak compensation coefficient k.
∑
−
=
=
1
0
)
(
k
N
i
i
W
N
Ｎ
: Sampling points;
W
(
i
)
: Window function
Real number part
Lin-Rel
R/
√
2
Imaginary number part
Lin-Img
I/
√
2
Amplitude
Lin-Amp
�
(R
2
+ I
2
)/
√
2
Logarithmic amplitude
Log-Amp
20 × log(
�
(R
2
+ I
2
)/
√
2)
Phase
Phase
tan
−1
(I/R)
Power Spectrum (One Signal Analysis)
Indicates the power (squared value) of the input signal to understand the amplitude information only.
R and I are the result of multiplying the window function peak compensation coefficient k.
Содержание RA3100 Omniace
Страница 1: ...RA3100 Omniace Instruction Manual 1WMPD4004444...
Страница 162: ...13 Optional Parts 13 1 List of Cables 162 1WMPD4004444 12 4 Exterior 12 4 1 Main Unit Exterior 394 199 410 334...
Страница 163: ...12 Specifications 12 4 Exterior 1WMPD4004444 163 12 4 2 Two Channel Voltage Module RA30 101 Exterior...
Страница 164: ...13 Optional Parts 13 1 List of Cables 164 1WMPD4004444 12 4 3 Four Channel Voltage Module RA30 102 Exterior...
Страница 165: ...12 Specifications 12 4 Exterior 1WMPD4004444 165 12 4 4 Two Channel Voltage Module RA30 103 Exterior...
Страница 166: ...13 Optional Parts 13 1 List of Cables 166 1WMPD4004444 12 4 5 16 Channel Logic Module RA30 105 Exterior...
Страница 167: ...12 Specifications 12 4 Exterior 1WMPD4004444 167 12 4 6 Two Channel Temperature Module RA30 106 Exterior...
Страница 168: ...13 Optional Parts 13 1 List of Cables 168 1WMPD4004444 12 4 7 Remote Control Module RA30 112 Exterior...
Страница 173: ...13 Optional Parts 13 2 List of Probes Clamp Meters 1WMPD4004444 173 MEMO...
Страница 174: ...13 Optional Parts 13 4 List of Spare Parts 174 1WMPD4004444 MEMO...
Страница 175: ...Omniace RA3100 Instruction Manual 1WMPD4004444 1st Edition...
