Write/Read

About SA Application

Description

Sets and returns the DFT record size type. The DFT RecordSize is based on the ForceADCRecordSize and the DFT record size type. The DFT record size is always equal or larger than the ADC record size.

 VB Syntax

sa.dft.Type = value

Variable

(Type) - Description

sa.dft

A SpectrumAnalyzerDFT (object)

value

(enum NASADFTSizeMode) - Choose from:

0  naSADFT2ToN: (Power of 2) Sets the DFT record size to the next power of 2 greater than or equal to the current ADC record size.

1  naSADFTOptimizeRadix: (Optimized Radix) Sets the DFT record to the next integer number that can be decomposed with 2,3,5,7,11,13 radixes.

2  naSADFTArbitrary: (Arbitrary) Sets DFT record size equal to the ADC record size. If the current ADC record size is a large prime number, then the DFT can be very slow.

3  naSADFTOptimizeSpeed: (Fastest) Sets the DFT record size as close as possible to the ADC record size (larger or equal) while optimizing processing speed.

Return Type

Enum as NASADFTSizeMode

Default

naSADFTOptimizeSpeed

Note: In previous releases the default was naSADFT2ToN (Power of 2).

Examples

sa.dft.Type = naSADFTOptimizeRadix 'Write

DFTType = sa.dft.Type 'Read

C++ Syntax

HRESULT get_Type(tagNASADFTSizeMode* pVal)
HRESULT put_Type(tagNASADFTSizeMode newVal)

Interface

ISpectrumAnalyzerDFT