Assessments - 3, GPA: 5
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Contents Conventions ............................................................................................ 2 Using the Spectral Measurements Toolkit..............................................3 Integrating the Spectral Measurements Toolkit...............................4 Locating the Spectral Measurements Toolkit .................................. 4 SMT Programming Flow Diagram ......................................................... 5 Advanced-Level VIs ........................................................................ 6 Using LabVIEW Spectral Measurements Examples .............................. 7 SMT Simulation Examples..............................................................7 SMT Spectrum Analyzer (simulated).......................................7 SMT ACP (simulated) .............................................................. 8 Using LabWindows/CVI Spectral Measurements Examples ................. 9 Continuous Zoom FFT..................................................................... 9 Frequency Response Measurement ................................................. 9 CrossPower Spectrum Measurement..............................................10 Using Spectral Measurements Toolkit Techniques ................................ 10 Zoom FFT ........................................................................................ 10 Continuous Zoom FFT..................................................................... 12 Block Zoom FFT ............................................................................. 14 Determining When to Use Continuous or Block Zoom FFT........... 14 Zoom Spectrogram .......................................................................... 15 Configuring Zoom FFT VIs....................................................................18 Center Frequency and Span ............................................................. 18 Resolution Bandwidth, Spectral Lines, and Window ...................... 20 Choosing Useful Configuration Parameters .................................... 22 Spectral Domain Averaging.................................................................... 24 Averaging Conventions ................................................................... 25 Averaging Options...........................................................................26 Averaged FFT Spectrum.................................................................. 27 Averaged Power Spectrum .............................................................. 28 Averaged Cross Spectrum ................................................................28 Averaged Frequency Response ........................................................29 Spectral Domain Measurements..............................................................29 Unit Conversion................................................................................29 Peak Search and Amplitude/Frequency Estimation .........................31 Power in Band ..................................................................................32 Adjacent Channel Power (ACP).......................................................32 Occupied Bandwidth (OBW) ...........................................................33 Where to Go for Support .........................................................................34 Conventions The following conventions are used in this manual: » The » symbol leads you through nested menu items and dialog box options to a final action. The sequence File»Page Setup»Options directs you to pull down the File menu, select the Page Setup item, and select Options from the last dialog box. <> Italic text enclosed in angle brackets represents directory names and parts of paths that may vary on different computers, such as