Yup, this technique also allows oscilloscope capture signal with frequency higher than their Nyquyst bandwidth.
The downside is it only works with repeative signal.
The downside is it only works with repeative signal.
https://www.tek.com/en/products/oscilloscopes https://www.keysight.com/us/en/catalog/key-34771/infiniivisi...
"Sampling" oscilloscopes are a much less common product -- they are useful for analyzing signals that are too fast to digitize in the ordinary way. They typically sample at a very slow repetition rate -- some hundreds of kilohertz, but each sampling aperture can be exceptionally short, allowing to record signals to 100 GHz frequency.