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2. Clipping (signal processing) - Wikipedia

   en.wikipedia.org/wiki/Clipping_(signal_processing)

   Clipping can be detected by viewing the signal (on an oscilloscope, for example), and observing that the tops and bottoms of waves aren't smooth anymore. When working with images, some tools can highlight all pixels that are pure white, allowing the user to identify larger groups of white pixels and decide if too much clipping has occurred.

3. Spectrum analyzer - Wikipedia

   en.wikipedia.org/wiki/Spectrum_analyzer

   An alternative technique, total harmonic distortion measurement, cancels out the fundamental with a notch filter and measures the total remaining signal, which is total harmonic distortion plus noise; it does not give the harmonic-by-harmonic detail of an analyser. Spectrum analyzers are also used by audio engineers to assess their work.

4. Optical autocorrelation - Wikipedia

   en.wikipedia.org/wiki/Optical_autocorrelation

   Classification of the different kinds of optical autocorrelation. In optics, various autocorrelation functions can be experimentally realized. The field autocorrelation may be used to calculate the spectrum of a source of light, while the intensity autocorrelation and the interferometric autocorrelation are commonly used to estimate the duration of ultrashort pulses produced by modelocked lasers.

5. Electronic test equipment - Wikipedia

   en.wikipedia.org/wiki/Electronic_test_equipment

   The following items are used for basic measurement of voltages, currents, and components in the circuit under test. Voltmeter (Measures voltage) Ohmmeter (Measures resistance) Ammeter, e.g. Galvanometer or Milliammeter (Measures current) Multimeter e.g., VOM (Volt-Ohm-Milliammeter) or DMM (Digital Multimeter) (Measures all of the above)

6. Total harmonic distortion analyzer - Wikipedia

   en.wikipedia.org/wiki/Total_harmonic_distortion...

   Harmonic-by-harmonic measurement, without wideband noise, can be measured by a more complex wave analyser. Another application is measurement of the effectiveness of an electronic filter with extremely narrow passband , such as a notch filter in a parametric equalizer .

7. Two-tone testing - Wikipedia

   en.wikipedia.org/wiki/Two-tone_testing

   An electronic device can be tested by applying a single frequency to its input and measuring the response at its output. If there is any non-linearity in the device, this will cause harmonic distortion at the output. This kind of distortion consists of whole-number multiples of the applied signal frequency, as well as the original frequency ...

8. Oscilloscope types - Wikipedia

   en.wikipedia.org/wiki/Oscilloscope_types

   A mixed-signal oscilloscope (MSO) combines all the measurement capabilities and the use model of a Digital Storage Oscilloscope with some of the measurement capabilities of a logic analyzer. Analog and digital signals are acquired with a single time base, they are viewed on a single display, and any combination of these signals can be used to ...

9. Signal generator - Wikipedia

   en.wikipedia.org/wiki/Signal_generator

   Equipment distortion can be measured using a very-low-distortion audio generator as the signal source, with appropriate equipment to measure output distortion harmonic-by-harmonic with a wave analyser, or simply total harmonic distortion. A distortion of 0.0001% can be achieved by an audio signal generator with a relatively simple circuit. [4]