I have been running some tests on my new Stanford Research PRS-10C Rubidium oscillator and have come across something interesting while viewing the 1PPS output. The output consists of a square wave pulsed for 10μs at a 1
The output looks as if the pulse contains a massive overshoot when the full pulse width is viewed. However, upon lowering the horizontal (time) setting the waveform appears to take better shape. I am curious if this is just due to the fact that the nature of the pulse is very narrow and has a fast (~2.5ns) rising edge with it. It certainly looks quite different than say the square wave used for the probe calibration process.
I would appreciate hearing any input about this.