InfiniiVision XR3 Series Oscilloscopes

The Keysight XR3 Series brings high signal integrity into a low-profile, 1U rack-mountable oscilloscope for synchronized, automated, high channel count testing. Designed for engineers who need more channels in less rack space, XR3 helps aerospace and defense, manufacturing, and high-energy physics teams move from bench-level confidence to rack-based scale. 

Welcome to the InfiniiVision XR3 Low Profile Oscilloscope. Built on Keysight’s MegaZoom 5 custom ASIC and a 14-bit ADC, it delivers a 50 µVrms noise floor and an update rate of 1.3 million waveforms per second in a 1U rack-mount form factor. It provides the signal integrity of a full-size bench oscilloscope while saving rack space and simplifying setup. 

The XR3 has a custom 14-bit ADC combined with a low-noise front end to deliver high signal integrity and low noise performance. With a noise floor of under 50 µVrms at full bandwidth, the XR3 can help visualize and debug the smallest signals. In the frequency domain, this translates to a noise density of under -161 dBm/Hz. 

Unlike a traditional analog trigger that uses separate trigger circuitry, a digital trigger triggers on acquired data. This means that triggers are jitter-free and sensitive enough to trigger on a single LSB of the 14-bit ADC. 

Real-time zone trigger is the world’s fastest trigger, with more than 1.3 million triggers per second. It is implemented in hardware directly on the acquisition path and qualifies signals at 6.4 billion tests per second. That is orders of magnitude faster than qualifying an edge trigger in software or an FPGA. 

Real-time zoom runs on the ASIC data path, so you get the full benefit of 14-bit acquisition without changing acquisition settings. Measurements are automatically gated to the zoomed region, so the results match exactly what’s shown on screen. Floating magnify opens a flexible, floating zoom window that you can place anywhere on the display. 

Color grading for waveforms and math traces makes subtle signal differences easier to see. You can invert the color scale to highlight the least frequent events. Waveform color grading is processed in the ASIC (real-time color grading), and math traces are color-graded in software. 

Segmented memory acquisition mode on XR3 Series oscilloscopes optimizes the use of acquisition memory for signals that occur in bursts separated by periods of inactivity. Rather than recording one long, continuous waveform, the oscilloscope captures only the segments of interest, each triggered independently and time-stamped for precise correlation. Segmented memory captures up to 256,000 segments by using the full 100 Mpts of acquisition memory. 

Fault Hunter is an innovative expert system for inspecting digital systems. It automatically evaluates your signal’s characteristics against user-definable criteria, quickly finding and saving errors for your review. It’s flexible, and you can define the test duration from a few minutes up to two days. 

The XR3 puts a full bench of test equipment in a single box. 

That means less equipment to buy, configure, and fit on the bench, and one place to work from stimulus through to analysis. 

Scale from a single oscilloscope to a multi-instrument system of more than 100 time-correlated channels. With the autosensing 10 MHz reference in/out, all the instruments share a common clock and trigger so that all channels use the same timebase. Auto-discover: Each scope reports its own IP address, so the system finds and configures connected instruments without manual network setup. 

Each XR3 instrument runs the native InfiniiVision interface, built to get the most from Keysight’s MegaZoom 5 ASIC for a fast, responsive scope experience. Built-in protocol decodes, power-supply testing, and jitter analysis handle everyday debug on the instrument itself, with no PC or extra software. Embedded VNC and web servers let engineers see and control the instrument remotely from any browser or VNC client. 

Infiniium 2026 software, native to the XR8 oscilloscope, can be downloaded free of charge to a Windows PC. Running on an external controller (PC), it shows signals from multiple XR3 instruments in one UI and adds deep real-time and offline analysis. Engineers can run it locally or through Remote Desktop alongside other Windows apps, and scale channel count for multi-rail, multi-lane, and system-level tests without switching between screens. 

Pair XR3 with Keysight’s next-generation XR8 oscilloscope to build one system from two scopes. XR8 handles high-speed signal integrity measurements, and XR3 takes on low-speed debug and power analysis alongside it, adding low-noise, cost-effective high-impedance inputs without converting a high-speed channel with an adapter. XR3 supports AutoProbe 1, passive, and current probes, so engineers can probe power rails, clocks, and control lines while every XR8 channel stays free for high-speed signals. 

All models come standard with 200 MHz bandwidth, 100 Mpts of memory, and the 16 digital channel MSO interface enabled. 

Analog channel (1–4), digital channel (D0–D15), line, external. Also works simultaneously with the serial trigger and mask limit test. 

Maximize your instrument uptime and confidently make accurate measurements by securing technical support, repair, and calibration services with committed response and turnaround times. High-performance instruments include 1 year of KeysightCare Assured. Obtain multi-year KeysightCare up front to eliminate the need for lengthy and tedious paperwork and yearly requests for a maintenance budget.