Oscilloscopes primarily measure voltage over time, but they can also be used to assess current, resistance, capacitance, frequency, sound, and more.

Engineers rely on oscilloscopes to design, test, and troubleshoot electronic devices, ensuring that systems operate as expected.

An oscilloscope works using three main systems—vertical, horizontal, and trigger—which work together to collect and display signal data on the screen.

Oscilloscopes detect voltage by capturing data from sensors that respond to electrical or physical signals like power, temperature, or vibration, then converting that data into a waveform display.

Many oscilloscopes calculate frequency automatically, but you can also measure it manually using the time scale on the screen and the formula: frequency = 1 ÷ period.

To measure current with an oscilloscope, you can either use a current probe or calculate it based on the voltage drop across a known resistor.

Oscilloscopes come in two main forms: analog and digital. Digital models are most common today and include types such as digital storage, digital phosphor, mixed signal, mixed domain, and digital sampling oscilloscopes.

A mixed signal oscilloscope captures and compares both digital and analog signals on one screen, making it ideal for testing embedded systems.

A mixed domain oscilloscope adds spectrum analysis to the standard mixed signal features, allowing users to evaluate both signal types along with RF measurements.

Start by learning how to set up the device and use its basic functions—our Oscilloscope How-To Guide walks through these steps clearly.

Selecting the right oscilloscope depends on your application. Factors like bandwidth, sampling rate, and number of channels all play a role—our guide can help you decide.

Prices vary based on the oscilloscope’s features and complexity. Entry-level models start around $500, while high-end lab instruments can cost tens of thousands.