WAVECOM Decoder W-PCI/e, W-CODE, W

FFT (HF, SUB, DIR and SAT)

FFT Type Start Frequency

FFT HF

Offset Frequency

FFT SUB

FFT DIR

FFT SAT

Offset Frequency

Offset Frequency – Bandwidth/2

Offset Frequency – Bandwidth/2

End Freqeuncy

Bandwidth

Bandwidth

Offset Frequency + Bandwidth/2

Offset Frequency + Bandwidth/2

Tuning FFT or Sonagram

In some modes a Tuning FFT or Sonagram is available. The FFT or Sonagram can be used to set the center frequency, shift, and passband filter.

Tuning FSK Signals

Mark and Space are selected with the right and left cursor. The precision of the center frequency is very

important and directly influences the performance of the decoder.

After every change, the center frequency and shift are automatically updated.

Automatic tuning is also available. It works perfectly as long as there is only one input signal present in

the spectrum. To apply a filter, see “ Passband Filter Support ” on page 69.

Options can be set using the right mouse button or the context menu (see “ FFT/Sonagram Context Menu ”

on page 63). It is possible to remove the tuning FFT or Sonagram in the View Menu.

Tuning MFSK Signals

The highest and lowest tone of the signal is selected with the right and left cursor. The precision of the

center frequency is very important and directly influences the performance of the decoder.

After every change, the center frequency and shift are automatically updated.

Options can be set using the right mouse button or the context menu (see “ FFT/Sonagram Context Menu ”

on page 63). It is possible to remove the tuning FFT or Sonagram in the View Menu.

Tuning PSK Signals

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Analysis Tools WAVECOM Decoder W-PCI/e, W-CODE, W-CLOUD Manual V8.3.00