Spectrum

1.Parameters Set
Before doing spectrum analyze, you must set analyze parameters.

Window:   This parameter decide window type when signal cutting.
Weighting: This parameter decide weighting net type.
 Average : This parameter decide whether do spectrum average.
Display   :  This parameter decide display type of spectrum.
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2.Power Spectrum
This function display the power spectrum of CH1 or CH2.

3 Amplitude-Phase Spectrum
This function display the Amplitude-Phase Spectrum of CH1 or CH2.

4 Real-Imaginary Spectrum
This function display the Real-Imaginary Spectrum of CH1 or CH2.

4 Corrected Amplitude-Phase Spectrum
This function use improved FFT technique to estimate the spectrum peaks and to reduce error of leakage and fence effect in FFT algorithm.

6 Transer Function
This function display the transer function of CH1 or CH2. That CH1 is input signal and CH2 is output signal.

7 Coherent Function
This function display the coherent function of CH1 or CH2. That CH1 is input signal and CH2 is output signal.
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8 Power Cepstrum
This function display the power cepstrum signal of CH1 or CH2.
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Example.
a.Amplitude-Phase Spectrum of a square wave signal.
 
B.Transfer function of a low pass digital filter designed by this program.
It is obtained by produce a same white noise signal in CH1 and CH2, then filter signal of CH2, and last do Transfer Function analyze.



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