Sometimes though, the rise time of a logic transition is important. The application that prompted this article was the measurement of oscilloscope bandwidth by looking at how quickly the ‘scope ...

Making an oscilloscope is relatively easy ... triggered by very low-rise-time short pulses. Clever tricks abound, such as using the diode pair to cancel out pulse leakage finding its way back ...

The 9404-05Sampler-Extended Real-Time Oscilloscope (SXRTO), with acquisitions running at up to 2 million triggered captures per second, enables very fast signals to build up in the display quickly.