Today, most histograms and spectrograms involved in electrical engineering are constructed on oscilloscope displays. To see a typical histogram in theTektronix MDO3000 Oscilloscope, first display a waveform (for example, the sine wave) from the internal arbitrary function generator (AFG). Then press ...
European audio engineers had another nickname for VU meters, 'virtually useless'. Citing the ballistics limitations and an overall lack of agreement with the underpinnings of the 'volume unit' standard, they developed the Program Peak Meter (PPM) instead. This type of meter displays a waveform's...
In nonlinear crystals, the pump, signal and idler lights are overlapped, and the interaction between them leads to the corresponding gain obtained by the signal and idler light. The physical processes of DFG and OPA are basically the same and both require two beams of light (pump and signal ...