HDMI standards have evolved rapidly, especially after the HDMI Forum released the HDMI 2.2 specification in June 2025. Certification test criteria, items, and product requirements have been fundamentally updated.

I. Overview of HDMI 2.2 Core Standards

1. Official Test Basis

The only authoritative test specification for HDMI 2.2 certification is the General Compliance Test Specification (GCTS) published in September 2025.

2. Key Technical Improvements

·Bandwidth doubled from 48Gbps to 96Gbps

·New Cat 4 Type A Connector to reduce signal attenuation

·Latency Indication Protocol (LIP) for audio-video synchronization

·Ultra96 HDMI cables required for full HDMI 2.2 support

  II. Four Core Test Categories for HDMI 2.2

1. Basic Qualification Tests

·Valid HDMI Adopter membership

·Quarterly royalty reporting

·Pre-certification proof for Cat 4 connectors and Ultra96 cables

2. Electrical Performance Tests (Most Updated)

·Impedance controlled at 95Ω ±10%

·30 FRL connection verifications with ≥99% success rate

·Cat 4 connector rise time ≤ 37.5ps

·24Gbps electrical eye diagram: eye opening ≥0.350, amplitude ≥67mV, jitter ≤0.15UI

No remedial testing allowed for failed electrical items.

3. Protocol Compatibility Tests

·HDCP 2.3: 100% encryption success

·LIP: A/V sync delay ≤10ms

·EDID, CEC, eARC: full cross-brand compatibility

4. EMC Tests

·Ultra96 cables: EMI ≤30dBμV/m

·Terminal products: radiation ≤40dBμV/m, immunity per IEC 61000-4-3

  III. HDMI 2.2 Certified Product Categories

·Display devices (TVs, monitors, projectors): 6–8 weeks

·Source devices (players, consoles): 4–6 weeks

·Adapters, splitters, repeaters

·Cat 4 Connectors: mandatory pre-certification

·Ultra96 HDMI Cables: independent mandatory certification

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