Oscilloscopes: How To Use Them, How They Work -

: Adjusts how many volts each grid square (division) represents. Zooming in (smaller volts/div) helps see tiny variations; zooming out (larger volts/div) captures large signals.

: DC coupling shows the entire signal (AC + DC offset); AC coupling blocks the DC part, useful for seeing small ripples on a large power supply voltage. Step-by-Step Guide to Use Oscilloscopes: how to use them, how they work

: Use the Volts/Div and Sec/Div knobs until the signal is visible and fills most of the screen. Avoid the "Auto-Set" button if you want to understand what you're seeing, as it can sometimes produce misleading results. : Adjusts how many volts each grid square