What's the difference between a logical analyzer and a virtual oscilloscope?
The principles are similar, and they all belong to digital instruments. The difference is that the logic analyzer can only measure digital signals, while the virtual oscilloscope can measure both digital and analog signals. Amateur electronics should buy virtual oscilloscopes!!
One is the tool of the logical domain, the other is the tool of time domain, not the advantage, but the two entirely different things!Logic analyzer channel is much, can see the logic signal of 1000 lines at the same time, oscillograph is 4 channel commonly.Logic analyzer can only distinguish two states 0 and 1, oscilloscope is generally 8 bit AD, 1/256 resolution can be used to analyze the signal.The logic analyzer is concerned with timing resolution and timing depth, and the oscilloscope is concerned with sampling rates, bandwidths, and storage lengths.Logic analyzer can be 16 layers of nested trigger (software debugging necessary), the oscilloscope can only have a trigger (or two layer trigger).Logic analyzer studies logic relation, establishment time and so on. Oscillograph studies jitter, overshoot, distortion, burr and noise.
20M desktop analog oscilloscope bandwidth slightly low, the general application is enough, but the application of high frequency will have defects, but not memory retention, not easy to analyze the signal, so if there is a meter, a virtual oscilloscope is not redundant!
