Fft - Keysight M31 A Series User Manual

LabVIEW
DAQbuffer functions are not accessible
M3601A
Available: No

2. 4. 5. 33 FFT

Calculates the FFT of data captured by DAQread for the selected channel.
Parameters
Name
Inputs
moduleID
channel
data
size
resultSize
dB
windowType Windowing option (section 2.1.5)
errorIn
Outputs
moduleID
result
resultPhase Phase of the FFT
errorOut
C
int SD_AIN_FFT(int moduleID, int channel, short *data, int size, double *result, int resultSize,
double *resultPhase, bool dB, int windowType);
Keysight M31XXA/M33XXA Digitizer User's Guide
Description
(Non-object oriented languages only) Module identifier, returned by function
Input channel number
data previously acquired by DAQread
Input data size
Size of the output buffers (module and phase)
Scale (dB or linear)
(LabVIEW only) If it contains an error, the function will not be executed and errorIn will be
passed to errorOut
(Non-object-oriented languages only) Module identifier, or a negative number for errors (see
Error Codes (page 70)
Module (magnitude) of the FFT
Error Codes
2 Software Tools: M31/M33XXA Digitizers
open (page 27)
79