Structure Diagram for NPF: NCD Pulse Fourier Transform
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         An Introduction to the Structure Diagrams is available.
        NB  These links will be broken until the HTML Version of the Code is installed.
 
 
Introduction
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This SU performs Fourier transform on NCD pulses and provide the background information that the frequency-domain analysis cuts require.  In the initialization stage, the average power spectrum for each of the forty strings (2 scope channels each) are read in as titles (TNPF). 

The Fourier and the power spectra are stored in the NPFA bank, which is created and hung off the EV bank by this SU.  
 
 
Titles Banks Used
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 TNPF  NCD pulse frequency analysis inputs

 
 
Initialisation Routines
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NPF_FFT_INI
 
 
Execution Routines
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NPF_FFT
NPF_GET_NCD_POWER_SPECT
NPF_FFT_DEL
NPF_FFTW_WRAPPER (C code)

 
Termination Routines
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NPF_FFT_TRM