Characteristic information about generated signal
Obtain the Characteristic Information of the NCO Object
The characteristic information of the NCO object is defined by the following fields:
NumPointsLUT— Number of data points in the lookup table.
SineLUTSize— Quarter-wave sine lookup table size in bytes.
TheoreticalSFDR— Theoretical spurious free dynamic range (SFDR) in dBc.
FrequencyResolution— Frequency resolultion of the
To obtain the above characteristics for a specific
NCO object, call the
info function on the object.
nco = dsp.NCO
nco = dsp.NCO with properties: PhaseIncrementSource: 'Input port' PhaseOffsetSource: 'Property' PhaseOffset: 0 Dither: true NumDitherBits: 4 PhaseQuantization: true NumQuantizerAccumulatorBits: 12 PhaseQuantizationErrorOutputPort: false Waveform: 'Sine' SamplesPerFrame: 1 OutputDataType: 'Custom' Show all properties
ans = struct with fields: NumPointsLUT: 1025 SineLUTSize: 2050 TheoreticalSFDR: 84 FrequencyResolution: 1.5259e-05
The fields and their corresponding values change depending on the settings of the object. For instance, if the
PhaseQuantization property is set to
TheoreticalSFDR field does not appear.
nco.PhaseQuantization = false; info(nco)
ans = struct with fields: NumPointsLUT: 16385 SineLUTSize: 32770 FrequencyResolution: 1.5259e-05
S — Characteristic information about signal
Characteristic information about the
System object, returned as a structure,
S. The number of fields of
S and their values vary depending on the property value settings
nco. The possible fields and their values are:
|Number of data points for lookup table. The lookup table is implemented as a quarter-wave sine table.|
|Quarter-wave sine lookup table size in bytes.|
|Theoretical spurious free dynamic range (SFDR) in dBc. This field applies
when you set the |
|Frequency resolution of the |