Extended function of frequency setting

Frequency / period combo box when setting the frequency (when the unit is Hz Clicking the right mouse button displays a pop-up menu for the extended frequency setting function.

Optimized for FFT

  • By selecting this, sister software WaveSpectra For convenience when used with spectrum display software such as FFT It is possible to convert accurately to the value closest to the original setting value at the frequency where no error for data extraction is generated (only the spectrum becomes one) at the time of

    That is, the minimum frequency resolution of the FFT "sampling frequency / Data length " and is converted to the closest one.
    Example: Original setting: 1000 Hz, 44100 Hz sampling, 4096 point FFT
    44100/4096 = 93 times of 10.76660 Hz ----> > 1001.294 Hz
    .

    Note: In order to obtain a spectrum with no cropping error as shown above with waveforms other than sine wave, this is not enough, Is required.
    For more information,


Please refer to
in order to eliminate cutting error in FFT with waveform other than sine wave.

FFT sample number

  • Set the sample data length of the FFT to be used for observation, for optimization above.
    (2048 to 131072)

    * Only one spectrum is observed when observing with FFT above this value.
    (In this case, the window function of FFT is " none " In other words, it becomes so if it is a rectangular window)

Multiples of Wave 1 or Multiples of Wave 5

  • This menu is added for Wave 2, Wave 3, Wave 4 and Wave 6, Wave 7, Wave 8.
    This allows the frequencies of Wave 2, 3, 4 to be set to an exact multiple (harmonic, harmonic) of the frequency of Wave 1, or the frequencies of Wave 6, 7, 8 to Wave 5 It can be set to an exact multiple (harmonic, overtone) of the frequency of.
    (X 2, x 3, x 4, x 5, x 6, x 8, x 10)


* All setting functions can be changed in real time even during signal generation.
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