The three main functions of an oscilloscope are:
1. **Signal Visualization**: It displays electrical signals as waveforms on a screen. This allows you to see the voltage variations of a signal over time, helping you understand its shape, frequency, and amplitude.
2. **Measurement of Signal Parameters**: The oscilloscope helps in measuring important parameters of the signal, such as peak-to-peak voltage, frequency, period, and rise time. Some oscilloscopes can automatically calculate these values.
3. **Signal Analysis**: Oscilloscopes allow for the detailed analysis of signals, such as identifying noise, distortion, or irregularities. Advanced features like triggering help isolate specific events within a signal for closer examination.
These functions make oscilloscopes essential for troubleshooting and designing electrical circuits.