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FFT analyzer -Basic FAQ-

Common

What measuring instrument is the FFT Analyzer?(2009.11.16)
What is FFT?(2009.11.16)

Input unit

Relationship between time constant and cutoff frequency of low-pass filter(2010.12.20)
What is sampling / sampling interval?(2009.11.16)
What is aliasing (wrapping)?(2009.11.16)
What is an anti-aliasing filter?(2009.11.16)
What is the difference between AC and DC of an input coupling and how can they be used differently?(2009.11.16)
What is the frequency characteristic of AC coupling?(2009.11.16)
What is CCLD? (2009.11.16)
What is TEDS?(2009.11.16)
How are acoustic filters (A-weighting, C-weighting) used?(2009.11.16)

Analysis condition

What is the relationship between frequency range and sampling frequency?(2010.12.20)
What is a FFT time window?(2009.11.16)
The relationship between time window length and number of sampling points.(2009.11.16)
How is frequency resolution determined?(2009.11.16)
What is "leakage error"?(2009.11.16)
What types of time window functions are available and how can they be used according to the purpose?(2009.11.16)
What is a trigger and what is the use? (2009.11.16)

Spectrum related

When displacement is obtained from the acceleration data by using the integration function and tracking analysis is performed, why the MAX0rd value is displayed larger than the O.A. (overall) value?(2014.06.20)
EU setup for expressing with the unit "ｄBm"(2014.04.14)
What is spectrum?(2009.11.16)
What is a Fourier spectrum?(2009.11.16)
What is a phase?(2009.11.16)
What is effective (RMS) value?(2009.11.16)
What is signal power?(2009.11.16)
What is power spectrum?(2009.11.16)
What does the dB value of the power spectrum vertical axis stands for?(2009.11.16)
Reading line spectrum values for a given frequency at peak value (or as P-P values)(2009.11.16)
What is an overall value and how can it be calculated?(2009.11.16)
How is the average of spectra calculated?(2009.11.16)
What is real time analysis?(2009.11.16)
What is overlap processing?(2009.11.16)
What are PSD and ESD? What is the difference from the power spectrum?(2009.11.16)
What is EU calibration?(2009.11.16)
Direct reading of the acceleration signal with the acceleration value.(2009.11.16)
Direct read of the voltage signal from the sound level meter or microphone into dB (sound pressure level Lp)(2009.11.16)
How is an acceleration value from an acceleration sensor converted to velocity and displacement?(2009.11.16)

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