Edited by WisdomAugust at 2017-10-27 09:11
Scope Systems and Controls
An oscilloscope has three main controls, labelled Vertical, Horizontal, and Trigger. You need to adjust these three basic settings to accommodate an incoming signal: a) The attenuation (reduction) or amplification (increasing) of the signal - use the volts/div (volts per on-screen division) control to adjust the height of the signal to the desired measurement range. b) The time base - use the sec/div (seconds per on-screen division) control to set the amount of time per division represented horizontally across the screen. c)The triggering of the oscilloscope - use the trigger level to stabilize a repeating signal, or to trigger on a single event. These adjustments sound more complex than they actually are: what you want to see is a steady waveform that fits on the screen. The first point (a) simply fits the waveform on the screen vertically, (b) sets the bottom axis so that the waveform repeats sufficiently that you can recognise it, and (c) makes sure that the waveform is clearly depicted.
And as we said, some digital scopes have an 'auto' button that do all of these things for you!
|