Author: Faculty of Electrical, Energy and Applied Informatics Engineering - Iasi
Year of publication: 2016
About the oscilloscope
The oscilloscope allows the measurement of signals by visualizing the amplitude in time. The two axes of an oscilloscope screen are:
- X - time axis or an external signal;
- Y - amplitude axis.
Because the output device is a special one, called a cathode ray tube, oscilloscopes are classified according to it: the standard oscilloscope, without memory, and oscilloscopes with memory.
With the development of digital techniques appeared new categories of oscilloscopes:
- Analog and hybrid oscilloscopes
- no memory;
- with memory on the cathode ray tube;
- with digital memory.
2. Digital oscilloscopes.
The oscilloscope equipped with a cathode ray tube with memory is called cathodic oscilloscope with analog memory. Lately, they are strongly competing with the digital cathode ray oscilloscope, which can store information in memory circuits and no longer requires a cathode ray tube with memory.
Hybrid oscilloscopes assume the existence of some analog-to-digital converters followed by character generators that allow the measurement of signal parameters (voltage, frequency) as well as other electrical or non-electrical quantities by using sensors and transducers in the form of probes, their output signal being applied to the cathode ray oscilloscope input.
Oscilloscopes with digital memory
Oscilloscopes with digital memory have appeared for measurements on logic signals which stores information in the form of a series of bits of value 0 (L) or 1 (H) logic.
Associated with a multiplication method, multi-channel oscilloscopes can be obtained, typically 8, which allows the visualization of a set of logical signals in a certain correlation.
- General information about oscilloscope
- Standard oscilloscope with a Y channel without memory
- Two-channel Y cathode ray oscilloscope
- Hybrid oscilloscope
- Digital memory oscilloscope
- Microprocessor oscilloscope
- Oscilloscope probes
- Using the oscilloscope in measurements
- Laboratory work
To better understand operation of analog and digital oscilloscopes, I've attached some videos below: