We explain in plain language the required documents, validity rules, and special requirements for UHS cables in 2026. Requirements may vary slightly per HDMI Forum and ATC policies.

I. Full Set of Required Documents for HDMI Certification

1. Membership & Financial Documents

·Signed and stamped HDMI Adopter Agreement

·Business license with official seal

·Vendor ID and payment proof of initiation fee

·Annual membership fee payment record

·Quarterly royalty payment commitment

2. Core Product Declaration Forms

·CDF: Must match actual product functions

·HDCP forms (mandatory; at least HDCP 2.3 in 2026)

·Model family list to avoid duplicate testing

3. Technical & Design Documents

·Product specification with clear bandwidth and interface details

·BOM listing certified HDMI chips

·Schematic, PCB layout emphasizing impedance and EMI design

·Firmware, EDID, and HDCP implementation documents

·User manual, packaging design, and product photos showing HDMI logo placement

4. Testing Documents & Sample Requirements

·Full test report from ATC

·Certified application form and trademark usage commitment

·2 new, unmodified, production-ready samples matching CDF and technical files

  II. Real Rules of HDMI Certification Validity

HDMI certification has no fixed expiration date if maintained properly:

1.Keep membership and financial obligations current.

2.Do not modify core HDMI chips, circuits, or critical firmware.

3.Comply with the technical standard at the time of certification.

4、Cooperate with annual verification.

HDMI 2.2 does not invalidate existing HDMI 2.1b certifications.

  III. Special Requirements for HDMI Cable Certification (UHS)

-Cables can be certified independently.

-Each length requires separate testing.

-UHS cables in 2026:

·Mandatory 48Gbps bandwidth

·Must pass low-EMI testing

·Typical testing cycle: ~2 weeks

  IV. Certification Maintenance & Reminders

·Annual membership fees and quarterly royalties must be paid on time.

·Major design changes require re-certification.

·Customs inspect DCP listings; invalid certification may lead to seizure.

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