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When two or more signals are modulated, they produce a form of distortion called intermodulation products. These intermodulation products are distortion that results from nonlinearities in a system.
In this YouTube video, Michel Hanbury of Algonquin College talks us through the process of using a PicoScope to measure filter response. In this demonstration, Michel uses the scope to make measurements of the low-pass filter circuit.
To minimize capacitive loading on the device under test, most probes use a x10 (also called 10:1) attenuator. This can often be adjusted, or compensated, to improve the frequency response.
This video shows how to measure distortion in a stereo amplifier using the PicoScope 4262 USB Oscilloscope. Distortion harmonics can be detected even when the time-domain waveform looks clean.
This video hows how to measure the frequency response of an audio amplifier using the PicoScope 4262. Includes spot frequency tests and a frequency sweep test, both of which can be done using the instrument's built-in signal generator.
Learning the basics of periodic waveforms like the sine wave can provide extremely powerful tools that can be used to explain and understand more complicated waveforms.
