Welcome to this installment of EE Classroom on Oscilloscopes
As a young child of an electronics engineering father, I became first acquainted with an oscilloscope while stumbling to the bathroom at night. The green glow emanating from an instrument about the size of an end table kept the otherwise dark hallway bright enough. The true purpose of this irreplaceable device no longer escapes me, of course, but the memory still, well, glows. Whether in a home workshop or massive engineering lab, the oscilloscope is truly beyond measure.
In this classroom, we’ll start with some Cathode Ray Oscilloscope (CRO) basics, then move into modulation tutorials from analog to digital to 5G. Walk through a checklist of what to consider when trying to achieve that ideal and accurate measurement. Wondering what it takes to measure harmonics, trace transistor I-V curves, demodulating and playing back AM signals, or decoding logic values into tangible sensor location data? Then access the related content for detailed, step-by-step projects complete with inventory, descriptions, and hardware, software and script instructions.
Hopefully, these resources shine a little light on the pathway towards your continued education.
Senior Editor, EE World Online
Modulation • Measurements
The basics of 5G's modulation, ODFM
How to achieve accurate oscilloscope measurements
Analog and digital modulation and modulation measurements
Basics of ampitude distortion
Orthogonal frequency-division multiplexing has become the standard modulation format for 5G New Radio. Learn how OFDM works and how it’s used.
It is important to take some simple precautions to ensure that oscilloscope measurements taken are useful and accurate.
Sources of amplitude distortion include noise and interference, but the main source of non-linear amplification and distortion can include noise sources superimposed on the waveform of interest
Because noise is characterized by large amplitude variations, it impacts AM transmission to a greater degree than FM transmission, giving FM a higher signal-to-noise ratio.