Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
U4998U
Keysight/Agilent U4998U, Passive HDMI Monitoring, MHL Compliance Testing, Non-invasive Tapping, HDMI and MHL Protocol/Audio/Video Analyzer and Generator Upgrades
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keysight/Agilent U4998U HDMI and MHL Protocol/Audio/Video Analyzer and Generator Upgrades
The Keysight U4998U upgrade package adds passive monitoring capability (PSV) as well as MHL compliance tests to the U4998A HDMI/MHL protocol analyzer and generator. For engineers developing and testing multimedia interfaces, this package provides a set of license-activated options to enable passive monitoring and MHL compliance testing using the base instrument.
Through its PSV option, the U4998U will allow for simultaneous viewing of a source's output and/or monitoring the HDMI signals while either snooping on or recording those signals. Using this non-invasive tapping technique will preserve the original electrical connection between devices, which can be important when trying to troubleshoot handshake issues, EDID exchanges, HDCP authentication, and streaming of audio and/or video from a source to a sink. Additionally, it may prove useful in troubleshooting interoperability issues within complex HDMI distribution networks used in industrial human-machine interfaces, digital signage, and conference rooms.
For MHL interfaces, the U4998U allows automatic validation of compliance with the MHL specification by providing two additional options (801 and 601). Option 801 will activate the source test suite, ensuring the source device complies with all MHL timing, packet construction, and content protection requirements. Option 601 will activate the Sink Test Suite, ensuring that any sink device (display/receiver) properly negotiates the link and accepts valid video formats and auxiliary data from an MHL source device. Together, Options 801 & 601 transform the U4998A Analyzer/Generator into an MHL Compliance Validator for MHL-enabled smartphones, tablets, automotive displays, home theater components, etc.
Together, these passive HDMI monitoring capabilities, combined with systematic MHL source and sink verification, provide a comprehensive analysis and emulation solution for pre-certification and production line testing. Engineers responsible for embedded vision systems, operator panels, and media interfaces depend on such tools to guarantee that their products deliver optimal audio/video performance at every phase of their product lifecycle. Since no hardware modifications are required to install these upgrades in the field, they offer a cost-effective way to expand your test capabilities.
| Model | U4998U |
|---|---|
| Part Type | HDMI/MHL Analyzer Upgrade |
| Base Compatibility | U4998A module |
| PSV Option | Passive HDMI monitoring |
| 801 Option | MHL source compliance |
| 601 Option | MHL sink compliance |
| Monitoring Mode | Real?time HDMI snooping |
| Protocol Support | HDMI and MHL |
| Signal Access | Source output with capture |
Associated part numbers for U4998U:
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Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
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