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High-Performance BERTs
High-speed receiver characterization for error-free data transmission
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Modular Digitizers
Save rack space with high-speed signal acquisition in PXI and AXI form factors
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Modular DAQs
Explore our switch measure mainframes and modules for design verification and automated testing
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Modular BERTs
Explore modular BERTs with customizable components for tailored high-speed digital interface testing
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High-Performance BERTs
Keysight BERTs are now offered in one capability class, the XE8-class, and include the M8000 Series BERTs. These BERTs are designed for high-speed digital interface testing, enabling you to accurately characterize, validate, and stress test digital receivers. BERTs are modular instruments consisting of a pattern generator, an error detector or analyzer, and a clock data recovery module. Used across a wide range of applications — including data center interconnects, optical transceivers, high-speed memory interfaces, and next-generation serial buses — Keysight BERTs support critical standards including PCIe®, DDR, USB, and Ethernet (100G / 400G / 800G / 1.6T). Choose from one of our most popular BERT configurations based on supported data rates and line coding or configure one specific to your application needs
Modular Digitizers
Keysight modular digitizers are high-performance signal acquisition instruments designed for fast, precise waveform capture in automated test and measurement systems. Built on PXIe and AXIe, they offer fast sampling rates and wide bandwidths in a compact form factor making them ideal for complex test environments in aerospace and defense, communications, and semiconductor testing.
Modular DAQs
Keysight data acquisition (DAQ) systems are designed to accurately capture and digitize electrical and physical signals such as voltage, current, temperature, and pressure from real-world environments. Used across industries like aerospace, automotive, energy, and electronics manufacturing, these systems support a wide range of applications, including sensor validation, environmental monitoring, and functional testing. Their modular design and channel scalability make them adaptable to everything from small benchtop setups to large-scale automated test systems. With high accuracy, reliability, and easy integration, Keysight DAQs ensure performance, quality, and efficiency in both R&D and production testing.
With over 30 plug-in modules—including low-frequency, RF, and microwave switching up to 26.5 GHz, digital I/O, and D/A converters—and a choice of 3- or 8-slot chassis, you can configure the modular DAQ that best fits your application.
Modular BERTs
Keysight modular bit error ratio testers (BERTs) consist of the individual, interchangeable components which make up the high-performance BERT solutions for testing high-speed digital interfaces. These instruments include individual pattern generators, error detectors, analyzers, and clock data recovery modules to support evolving test needs. You can build your own BERT configuration based on data rate, modulation format, and functional needs, customizing a setup to meet your specific application requirements.
Find the BERT for your application in minutes
Explore compatible software and accessories
Choose from a wide variety of BERT, digitizer, and DAQ software and accessories designed to streamline configuration, automate measurements, and ensure compliance to industry standards. Pair your software with the cables, kits, and extender boards needed to make the right measurement for your application.
Explore use cases
BERTs, digitizers, and DAQs support a wide range of measurements, discover them all
Wired Communication
How to Analyze PAM4 Receiver Signals
Characterize PAM4 with BER and SER measurements.
Wired Communication
Use a bit error ratio tester to perform 100 Gb/s per lane receiver calibration and conformance testing.
Wired Communication
Calibrate and test PCIe 6.0 DUTs for receiver compliance with high-bandwidth oscilloscopes, BERTs, and automation software.
Wired Communication
Validate DDR5 receiver conformance to JEDEC standards using test automation.
Wired Communication
Make multichannel current measurements during the product design stage using a DAQ system.
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Frequently asked questions
- Bit Error Ratio Tester (BERT): A BERT is used to measure the bit error rate (BER) in high-speed data transmission systems. It compares transmitted and received data to detect errors and ensure signal integrity in communication systems, such as optical, electrical, and wireless networks. BERTs are crucial for validating the performance of communication systems.
- Digitizer: A digitizer converts analog signals into digital data for precise analysis. It is commonly used in signal analysis tools like oscilloscopes to capture and digitize waveforms, enabling accurate measurements of signal characteristics such as amplitude, frequency, and timing. Digitizers are essential for analyzing waveforms in both electronic testing and research.
- Data Acquisition System (DAQ): A DAQ system collects and converts data from physical sources like temperature, pressure, or voltage signals into a digital format for analysis. DAQs are used in industries for monitoring, scientific experiments, and process control, enabling the measurement and recording of a wide range of physical phenomena.
A digitizer is a device that converts analog signals into digital data for accurate measurement and analysis. It captures the input analog signal by sampling it at high rates and quantizing it into a digital format. This allows for precise waveform analysis, measurement of signal characteristics, and the ability to store and process the data for further analysis. Digitizers are commonly used in applications requiring high-precision waveform capture, such as in scientific research, engineering, and industrial testing.
While both digitizers and oscilloscopes capture and analyze signals, their primary functions and applications differ:
- A digitizer is designed to convert analog signals into digital data, allowing for detailed analysis and storage of waveforms. It does not display real-time signals but instead focuses on precise data capture for post-analysis.
- An oscilloscope, on the other hand, is designed for real-time visualization of waveforms. It allows you to observe signals on a screen as they change over time, making it ideal for troubleshooting and monitoring dynamic signal behavior.
In short, a digitizer is ideal for high-precision waveform capture and offline analysis, while an oscilloscope is optimized for real-time monitoring and troubleshooting of electrical signals.
Data acquisition (DAQ) is the systematic measurement and recording of electrical characteristics or physical metrics with one of these end goals:
- design verification
- electrical or thermal characterization
- monitoring of an electronic, manufacturing, or physical process
- control over the testing of a product
A dynamic DAQ can sample a single or multiple sensors’ dynamic signals at a high sampling rate using its built-in hardware signal digitizer. Hence, it can capture transient signals of voltage, current, vibration, or structural stress changes. A modern DAQ has a built-in fast Fourier transform (FFT) mathematic algorithm to transform a time-domain signal display into a frequency-domain signal display. An engineer can then analyze the dynamic signal in both the time and frequency domains.