The interior o a cathode-ray tube for uise in an oscilloscope. 1. Deflection voltage electrode; 2. Electron gun; 3. Electron beam; 4. Focusin coil; 5. Phosphor-coatit inner side o the screen
An oscilloscope, previously cried an oscillograph, an informally kent as a scope, CRO (for cathode-ray oscilloscope), or DSO (for the mair modren digital storage oscilloscope), is a teep o electronic test instrument that allaes observation o constantly varyin signal voltages, uisually as a twa-dimensional plot o ane or mair signals as a function o time.