getSpectralMaskStatus

Get test results of current spectral mask

Syntax

results = getSpectralMaskStatus(scope)

Description

results = getSpectralMaskStatus(scope) returns the current status of the spectral mask on the spectrum analyzer, scope, in a structure, results.

Examples

Get Spectral Mask Status

This example shows how to add a spectral mask to an existing dsp.SpectrumAnalyzer System object scope and get the status with getSpectralMaskStatus.

sine = dsp.SineWave('Frequency',[98 100],'SampleRate',1000);
sine.SamplesPerFrame = 1024;
scope = dsp.SpectrumAnalyzer('SampleRate',sine.SampleRate, ...
       'PlotAsTwoSidedSpectrum',false,'ShowLegend',true);
hide(scope);

scope.SpectralMask.EnabledMasks = 'Upper and lower';
upperMask = [0 -10; 90 -10; 90 30; 110 30; 110 -10; 500 -10];
set(scope.SpectralMask,'UpperMask',upperMask,'LowerMask',-55);

for i=1:100
    scope(sine() + 0.05*randn(1024,2));
end

res = getSpectralMaskStatus(scope)

res = 

  struct with fields:

    IsCurrentlyPassing: 0
        NumPassedTests: 1
         NumTotalTests: 33
           SuccessRate: 3.0303
          FailingMasks: 'Lower'
       FailingChannels: [1 2]
        SimulationTime: 101.3760

In the Spectrum Analyzer, you can see the same information in the Spectral Mask panel.

show(scope);
release(scope);

Input Arguments

scope — Spectrum Analyzer

spectrum analyzer name

Spectrum Analyzer with spectral masks whose status you want to check. Specified by the name of the dsp.SpectrumAnalyzer object.

Output Arguments

results — Current status of the spectral mask

structure

The results return the current status of the spectral mask with these properties:

Field	Description
IsCurrentlyPassing	Indicator of whether one or more masks are currently passing 1 — All masks are passing 0 — One or more masks are failing
NumPassedTests	Number of mask tests that have passed
NumTotalTests	Total number of mask tests
SuccessRate	Percentage of tests that have passed
FailingChannels	Array of channel numbers that are currently failing the mask test
FailingMasks	Character array of which masks are currently failing: 'None', 'Upper', 'Lower', or 'Upper and lower'
SimulationTime	Simulation time