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Oscilloscope
Make better measurements with award-winning Keysight oscilloscopes
Join Us at the HD3 Virtual Event on Sept. 18
Learn how to debug designs with 4x the resolution and 1/2 the noise floor in consumer electronics, power supply testing, and automotive.
Buy an Oscilloscope, Get 100 Mpts Memory Free
Capture longer time spans at full sample rate when you purchase an HD3 oscilloscope.
Buy an Oscilloscope, Get Free Memory & Software
For a limited time, receive a free memory upgrade and software package when you purchase an Infiniium EXR-Series Oscilloscope.
Oscilloscope Test Measurements You Can Count On
Whether you design, debug, or perform compliance tests, you need proven measurement technology to be successful. Our oscilloscope hardware, with signal integrity, high effective number of bits (ENOB), and the fastest waveform update rates, captures the true performance of your device under test. Couple this with superior protocol decoding, analysis, and compliance software, and you’re guaranteed to get measurements you can trust.
Find the Oscilloscope That's Right For You
Whether you need high signal integrity, a portable form factor, or an affordable oscilloscope, we've got you covered. With our broad range of oscilloscopes, you are sure to find the right scope no matter where you are in the development cycle.
Select the Oscilloscope Software That's Right For You
Keysight offers the industry's largest selection of compliance, debugging, and application-specific oscilloscope test software. Explore and select the oscilloscope software that completes your testing solution.
Industry's largest selection of oscilloscope test software
The software works seamlessly with your Keysight oscilloscope and provides the insight you need to quickly and easily innovate your best designs. Explore how you can create, test, and validate your designs faster with automated software testing and stay up to date on the latest standards with over 50 compliance test software packages.
PathWave BenchVue Oscilloscope Software
PathWave BenchVue oscilloscope test software for PCs makes it easy to connect, control, capture, and view measurement data from your oscilloscopes with no additional programming. The software enables you to do the following:
- Connect and control your oscilloscopes in the cloud
- Log data, screenshots, and system status
- Export measurement data in the desired format
- Make prototypes and create automated custom test sequences
- Save and replicate instrument configurations to repeat results
- Visualize multiple types of instrument measurements simultaneously
Over 50 Compliance Test Software Packages
High-speed digital transceivers require validation to ensure compliance with the latest standards. Pair your Keysight oscilloscope with over 50 compliance test software packages to speed up debugging and validation.
- High-speed digital: USB, DDR, MIPI, PCIe, and HDMI
- Automotive: CAN, LIN, FlexRay, and Ethernet
- Aerospace and defense: MIL-STD and ARINC 429
- General-purpose: I2C, SPI, NFC, SATA, SAS, XAUI, and more
New to Oscilloscopes?
Learn the basics and advanced applications to help you develop a deeper understanding of oscilloscopes. Understand the functions of an oscilloscope, signal characteristics, types of waveforms, how an oscilloscope works, types of oscilloscopes, and key specifications to look out for when selecting an oscilloscope.
Which Oscilloscope Test Probe Do You Need?
Keysight offers a broad range of voltage, current, and optical probing solutions for InfiniiVision and Infiniium Series oscilloscopes. Check out this guide to see which probe is right for your testing needs.
Understanding common probing mistakes is crucial to making accurate measurements. Probes can introduce loading, noise, and jitter into your system. The electrical behavior of your probes greatly affects your measurement results and potentially even the operation of your device. Learn how to avoid common oscilloscope probing pitfalls in this eBook.
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Extend Your Capabilities With The Right Tools
Get more functionality out of your oscilloscope today by pairing it with the right accessories to improve productivity and the right Keysight PathWave design and test automation software to accelerate your product development.
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Frequently Asked Questions - Oscilloscopes
An oscilloscope, sometimes shortened to “scope” or “o-scope”, is a test instrument that captures and displays the behavior of electrical signal over time. For example, it can plot a graph of voltage (y-axis) versus time (x-axis) on its display.
Oscilloscopes are powerful tools that engineers use for designing and testing electronic devices. They are vital in determining which components of a system are behaving correctly and which are malfunctioning. They can also help you determine whether or not a newly designed component behaves the way you intended. This can be done by analyzing signal properties such as amplitude, period, frequency, rise time, pulse width, and more. Modern digital oscilloscopes can also perform mathematical functions on waveforms, such as a Fourier transform, making analysis quicker.
Test engineers and developers use oscilloscopes to display, graph, and analyze electrical signals during research and development, validation, quality assurance, and troubleshooting or debugging of electronic systems, circuit boards, and integrated circuits. Oscilloscopes play a key role across all industries for a variety of applications and technologies, including high-speed digital electronics, optical communication, RF, power electronics, automotive, and aerospace and defense.
An oscilloscope is a critical test instrument for observing, analyzing, or recording the behavior of an electrical signal. Some specific use cases for oscilloscopes in an electronics laboratory include measuring voltage waveforms, analyzing electronic signals, detecting unwanted noise and crosstalk, and evaluating harmful transients in power systems.
With so many brands and types of oscilloscopes available, they might look different from one another, but most have the same basic steps to get started. Here’s a step-by-step guide on how to use an oscilloscope:
- Connect the Probe: Attach the probe to the oscilloscope's input channel. Make sure it’s securely connected. If you have an attenuated probe, you may need to compensate your probe until you have a perfect square waveform.
- Probe the DUT: Connect the probe to your device under test (DUT) by attaching the probe tip to the point of interest on the circuit and connecting the ground clip to a common ground point on the DUT.
- Adjust Vertical and Horizontal Scales: Use the oscilloscope controls to adjust the vertical (voltage) and horizontal (time) scales. This ensures that the waveform is displayed correctly on the screen.
- Set the Trigger: Use the trigger setting to stabilize the waveform. The trigger helps ensure that the signal is consistently displayed. Adjust the trigger level and type as needed.
- Interpret the Waveform: Look at the waveform on the screen. The x-axis represents time, and the y-axis represents voltage. Observe the shape, frequency, and amplitude of the signal.
- Analyze the Waveform: Identify any issues or anomalies. Is the signal behaving as expected? Are there noise spikes or irregularities? Troubleshoot any detected problems to ensure accurate signal performance. You may use the oscilloscope's features, like cursors and automated measurements, to assist in your analysis.
More information:
Keysight offers a wide range of free technical resources for engineers to learn about essential oscilloscope functions and how to get started.
- Learn oscilloscope fundamentals with the How to Use an Oscilloscope.
- Get started with Keysight oscilloscopes with free Oscilloscope Technical Resources such as lab guides and tutorials, advanced training guides, and application notes.
Want help or have questions?