… using a special J-test stimulus signal and analyzing the analog output spectrum. Displays graphs showing the FFT spectrum, the jitter spectral density, and the integrated jitter, in...
… using a special J-test stimulus signal and analyzing the analog output spectrum. Displays graphs showing the FFT spectrum, the jitter spectral density, and the integrated jitter, in...
… APx585/586, the simplest way to add the external resistor is by inserting a BNC-Tee and adapters as shown in Figure 1. For improved noise shielding, a metal shell tied to the connector shield should enclose…
… and de-emphasis on playback, established by the Recording Industry Association of America. Figure 1 shows the RIAA equalization curve for playback of vinyl records. To test a phonograph preamplifier, you would…
… that can be invoked by the command line, the process can easily be automated.
In the example shown in Figure 2, we are using a third party program called Goldwave to play a .wav file containing an audio…
… Visual Basic.NET
In VB.NET, the references are accessed by selecting Project > Properties, as shown in Figure 1 (Note: The images shown below are from Microsoft Visual Basic 2008 Express Edition. The…
… and adjacent bins, to determine its precise frequency. When finished, an FFT response graph will be shown, and the prompt will reappear with the frequency error displayed. Since the nominal sample rate of the…
… .config file are not used, in some cases the LabVIEW driver VIs may not work.
The Examples project shown in the figure above contains a configuration file named APx500 Examples Project.lvproj.config. You can…
… recordings, the generator was set to generate a 1 kHz sine wave at -20.0 dBV (100 mVrms). Figure 1 shows the RMS Level results from analyzing these five .wav files with the Input Connector set to File (Analog…
… which is discussed in Technote 106: Measuring Power Supply Rejection Ratio (PSRR).
The graph below shows PSRR versus frequency for a class D amplifier used in mobile devices, with appended traces for…
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