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Keysight U4421A


Protocol Analyzer and Exerciser for MIPI & D-PHY Interface

Keysight U4421A Protocol Analyzer and Exerciser for MIPI & D-PHY Interface

From USD*$47,149.30 Save 45% List Price 85,726.00 USD*

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Keysight U4421A Protocol Analyzer and Exerciser for MIPI & D-PHY Interface
Keysight Used
Keysight U4421A
Protocol Analyzer and Exerciser for MIPI & D-PHY Interface
Configuration: 001, 003, 404, 603, 703, M16
Customization available
Shipping: Limited countries only
Warranty: 90 days
Accessories: Not included
Select condition
This will be taken into account for the value estimation of your unit.

KeysightCare Assured: Support. Elevated.
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• 4-business-hour technical response
• Committed repair coverage
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Cannot ship to:

European Union

Unit only ships within China.

Unit ships worldwide.

Standard Keysight Used For professional and industrial use only
Condition Checked, working Calibrated units perform according to specification. Not calibrated units are operational tested/power up test.
DownloadsKeysight U4421A Data sheetKeysight U4421A User Manual
Support 90 days warrantyFor calibration & service plans contact us.5 years Keysight Care assured on eligible models The product may be End-of-Support
CalibrationTested or calibratedIf there is no certificate in the gallery above, the unit is tested but not calibrated.
AccessoriesNot includedFor help, please contact a Keysight expert
Shipping Limited countries only Check availability
Deal IDE185019133986

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This InstrumentThis Instrument
Keysight Premium UsedKeysight Used
Save up to 70%Save up to 90%
Like New ConditionWorking Condition²
Firmware UpdatedFirmware as Listed
Fully CalibratedCalibration as Listed
New AccessoriesAccessories as Listed
Like-New Warranty
1–5 Years¹
90 days warranty
Customization PossibleLimited Customization

Contact us to check availability of any service, calibration plans, or the possibility to software. New accessories may be able to be added for the United States only. 


The U4421A MIPI D-PHY Analyzer/Exerciser for CSI-2 and DSI provides deep insight into mobile computing designs. The U4421A MIPI D-PHY Exerciser option for CSI-2 and DSI provides the record length necessary to stimulate designs with high-definition images and video that best simulates traffic from a wide variety of device busses of varying signal performance.

MIPI D-PHY Analyzer

  • Packet-level trigger, filtering, decode and analysis of CSI-2 or DSI traffic
  • Up to 1.5Gb data rate, up to 16GB Trace Depth
  • 1/2/4 Data Channels + CLK
  • “Raw” view of state traffic for additional troubleshooting insight

MIPI D-PHY Exerciser

  • Generate user-defined D-PHY traffic
  • Up to 1.5Gb data rate, up to 16GB Trace Depth
  • Change speed, slew rate, voltage levels and lane skew
  • Flexible pattern creation (through GUI, packet inserter, and image inserter)

Flexible probing options

  • E5381A Flying leads with headers and solder-in connections (Analyzer)
  • E5405A SoftTouch Pro high-density header (Analyzer)
  • SMA to SoftTouch Pro breakout adapter (available from UNH-IOL) (Analyzer)
  • U4422A SMA cable, flying lead connection (Exerciser)

End to end image analysis

  • Option 001 -- Image Inserter
  • Option 003 -- Image Extractor

The MIPI D-PHY-based mobile computing designs create significant challenges -- fast, multi-lane bursts of high-definition images, multi-bus integration, HS/LP signal switching, and accelerating development cycles all add pressure to development teams.

The U4421A MIPI D-PHY Exerciser/Analyzer addresses these challenges by combining a true protocol analyzer -- protocol-aware triggering, filtering, storage qualification and analysis, the first “raw” view of data (an oversampling of states that lets you see they “why” of your protocol, instead of the “what”), and a full-featured protocol exerciser -- all in one instrument.

The U4421A Exerciser/Analyzer is an AXIe-based module that can reside in a 2-slot or 5-slot mainframe. Multiple mainframes and modules can be combined to give you views into multi-bus MIPI systems (combining DSI and CSI-2), or with other AXIe modules, including PCIe, DDR, and HDMI bus analysis. The system can be controlled by an external PC or with an M9536A AXIe embedded controller.

The system’s flexibility is not limited to mainframe configuration. There are many probing options to accommodate a wide variety of cables , vias, traces, sockets, and high-density headers. Expanded lanes and memory, protocol support, and image analysis are all optional and can be upgraded at any time.

See downloads for more details
Installed Options
See downloads for more details
90 days warranty
Contact us or request a custom quote to check availability of service plans.
Tested or calibrated
Get up to 10% discount on calibration plans ordered with your used Keysight instrument.
Contact us or request a custom quote to check availability.
No accessories included
To order additional accessories, please contact us or request a custom quote
Get up to 10% discount on software ordered with your used Keysight instrument.
Contact us or request a custom quote to check availability.


What are the differences between Keysight Used & Keysight Premium Used?

You will find more information about the differences of Keysight's used equipment standards here.

Can I configure a unit to meet my personal needs?

Customization is generally possible with our Keysight Premium Used equipment. The majority of our Keysight Premium Used equipment can be configured just the way you need it. Options can be added at additional cost.
Customizing Keysight Premium Used equipment might change the delivery and lead time of the item.

Some Keysight Used products cannot be customized. Use the contact option on the product page to check with the our eStore team.

What accessories are included?

Keysight Premium Used equipment typically comes with the same accessories and warranty as new products.

For Keysight Used products, the accessories included are mentioned in each listing on the Keysight Store on eBay or the Keysight Alibaba store.

Can you include other accessories?

We currently only offer those accessories which are part of the listing. Other accessories can be purchased separately at extra cost with your purchase of a Keysight Used or Keysight Premium Used unit.

Please mention in the comment field which additional accessories or support you are interested in.

For seperate or post-purchase ordering, please contact your local Keysight office or Keysight Partner.

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