Keysight MXR-Series Mixed Signal Oscilloscope from Keysight Technologies - lab workhorse for complex embedded designs

By Julian Reed, ad hoc news Bestsellers & Flagships Desk. Reviewed July 06, 2026, 12:38 AM ET. Details in the imprint.

Keysight MXR-Series Mixed Signal Oscilloscope sits on a cold gray lab bench, its 15.6-inch touchscreen casting a soft blue glow over a tangle of probe wires and a humming DC power supply. A flick of the rotary knob and a noisy switching waveform settles into a crisp, readable trace. This is the kind of instrument embedded engineers reach for when a prototype board refuses to behave and the deadline is not moving.

What the MXR-Series actually is

The MXR-Series is Keysight’s mid- to high-range mixed signal oscilloscope family, combining up to 8 analog channels with 16 digital channels in a single chassis for debugging embedded systems, power electronics, and RF subsystems. It runs Keysight’s Infiniium EXR/MXR software platform with segmented memory, serial protocol decode, and advanced triggering options. On the manufacturer product page, Keysight specifies bandwidth options from 500 MHz up to 6 GHz, with sample rates up to 16 GSa/s depending on configuration.

Unlike classic bench scopes that only show time-domain traces, the MXR-Series integrates real-time spectrum analysis so engineers can flip between time and frequency views without changing instruments. That matters when debugging EMI peaks from switching regulators or checking clock harmonics on a digital design. The unit offers a 15.6-inch Full HD capacitive touchscreen, front-panel keys, and a built-in SSD for waveform data and application setups. In one Keysight demo video, an application engineer drags windowed FFT overlays directly on a live waveform to see problematic spurs that would otherwise hide in noise.

Key specs US engineers care about

On Keysight’s detailed datasheet, the MXR-Series offers up to 8 analog channels, each with up to 6 GHz bandwidth, targeting high-speed digital interfaces like PCIe, USB, and advanced memory buses. Mixed signal support adds 16 digital channels for logic-level capture, giving engineers correlated views of analog transients and bus activity. The instruments can be configured with memory depth up to 1 Gpts per channel, which allows capturing long sequences, protocol transactions, or intermittent glitches without sacrificing sample rate.

Triggering options cover edge, pulse width, pattern, and more exotic events such as runt pulses and setup/hold violations. For embedded engineers, protocol decode matters more than raw bandwidth: the MXR-Series supports buses like I2C, SPI, CAN, CAN FD, LIN, and others via software licenses. On Keysight’s application notes, product manager Nitesh Bansal explains how segmented memory and protocol-aware triggering help capture rare CAN errors in automotive ECUs without manually stepping through countless cycles. He points out that engineers use the instrument as a workflow hub, saving setups per project and recalling them months later when a design spins.

How it fits into a US lab

In a typical US electronics lab, an MXR-Series scope might sit between a low-cost entry-level scope and a high-end EXR or UXA analyzer, acting as the everyday workhorse. Its footprint is surprisingly compact for an 8-channel instrument, closer to a small office desktop than a rackmount monster. The fan hum is audible but not overpowering; a lab tech described the noise level as "background air-conditioner" rather than "vacuum cleaner." That matters when several instruments run all day in a closed room.

Keysight sells the MXR-Series through its direct sales channel and authorized distributors in the US, with typical delivery times in weeks rather than months for standard configurations. Pricing is highly dependent on bandwidth and options, but US distributors list configurations in the mid five-figure dollar range for 4-channel 500 MHz models and noticeably higher for fully loaded 8-channel 6 GHz units. For US buyers, that positions the MXR-Series squarely as a capital equipment decision, often purchased as part of a broader lab upgrade rather than impulse buying.

Software, licenses, and workflow

Inside the MXR-Series, Keysight uses its Infiniium software platform with a modern UI, responsive capacitive touch gestures, and dedicated apps for serial decode, jitter analysis, and power integrity measurements. On a test bench, swiping through menus feels closer to an industrial tablet than the stiff button-driven interfaces of older scopes. Engineers can install optional applications via license keys, turning on features like embedded protocol decode or compliance testing for USB or HDMI.

Keysight’s documentation highlights segmented memory, which lets the scope break long acquisitions into blocks and skip idle periods. That way, when analyzing sporadic events such as power rail droops or rare logic glitches, the instrument captures only interesting segments and saves time during post-analysis. In an application note, Keysight engineer Johnnie Hancock walks through a workflow where an MXR scope captures sporadic power integrity issues on a processor rail, then uses advanced measurement tools to correlate droops with specific bus transactions. A common lab pattern is to export these captures via LAN or USB and feed them into Keysight’s PathWave software stack for further statistical analysis.

Competing options and B2B positioning

From a US market perspective, the MXR-Series competes with mixed signal scopes from Tektronix and Rohde & Schwarz in similar bandwidth ranges. Tektronix, for example, offers mid-range MSO families with comparable channel counts and protocol decode, while Rohde & Schwarz positions its RTO/RTE series for similar embedded and power debugging use cases. Keysight leans on its broader ecosystem, integrating the MXR scopes with power analyzers, function generators, and RF equipment through shared software and remote control APIs.

That ecosystem matters in B2B settings where a single OEM, automotive tier-1, or defense contractor might equip entire labs with one vendor’s gear. In these environments, MXR scopes become standard fixtures alongside Keysight power supplies and analyzers, simplifying training and support. On Keysight’s investor materials, CEO Satish Dhanasekaran notes that general electronics test, including oscilloscopes and signal analyzers, remains a core revenue driver for the company’s Communications Solutions Group. Large multi-year framework agreements with major US customers often bundle scopes like the MXR-Series with software and service contracts.

Why embedded and power engineers like it

Talk to embedded engineers and they will describe mixed signal scopes like the MXR-Series as "visibility tools" rather than mere measurement devices. When a microcontroller sporadically crashes, an engineer can set up triggers on power rail dips, clock glitches, or protocol errors, then see everything in a single synchronized view. Keysight’s inclusion of both analog channels and digital logic channels, combined with protocol decode, shrinks the need to move probes between separate instruments.

For power electronics designers working on DC-DC converters or motor drives, the MXR’s higher bandwidth and real-time spectrum analysis allow a quick view of switching waveforms and EMI behavior. A common scenario in US labs is checking whether a new converter layout meets internal noise limits before sending boards to external compliance testing. Keysight’s demos show engineers viewing time-domain switching behavior and frequency-domain EMI content side by side, adjusting gate resistors or snubber components and immediately seeing changes in spurs and harmonics. That kind of direct feedback helps shorten design cycles and reduce re-spin risk.

US procurement, calibration, and lifecycle

For US organizations, buying an MXR-Series scope typically goes through procurement channels with structured quotes. Keysight offers US-based support, calibration, and extended warranty options, often bundled as service plans over multiple years. That is relevant for regulated industries like aerospace and medical devices, where calibration certificates and traceability are non-negotiable. Many US labs schedule annual calibrations, either on-site or via shipment to Keysight service centers, integrating scope maintenance into broader quality management systems.

Lifecycle-wise, a mid-range mixed signal scope like the MXR-Series is expected to stay in service for many years. Firmware updates from Keysight can extend functionality, add support for new protocols, or fix bugs. Keysight’s software release notes mention ongoing improvements to UI responsiveness, protocol decode libraries, and remote connectivity. Engineers who have used earlier Keysight scopes report that the UI evolution has been noticeable, with modern MXR models feeling faster and more visually clear, especially when many measurements and overlays are active.

Company context and stock

Keysight Technologies grew out of Agilent’s electronic measurement business and today positions itself as a leading test and measurement provider across communications, industrial, and aerospace markets. Oscilloscopes such as the MXR-Series sit inside its broader bench and modular test portfolio, supporting design, validation, and manufacturing for US and global customers. For investors tracking Keysight Technologies stock (NYSE: KEYS), the oscilloscope and general electronics test segment contributes to recurring equipment and service revenues, but the MXR-Series is just one part of a wide-ranging product mix.

This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.