Common Devices Under Test

HDMI testing is commonly applied to the following devices:

• Televisions and Monitors
• Blu-ray Players, Set-Top Boxes, Home Theater Equipment
• Gaming Consoles (e.g., PS5, Xbox)
• Computers and Laptops
• Graphics Cards and Embedded Systems
• HDMI Cables and Connectors
• Mobile Devices (via HDMI adapter output)

HDMI Test Specifications

Key test specifications include:

• Electrical Characteristics: Such as voltage swing, steady-state levels, signal impedance matching, etc.
• Timing Parameters: Including data setup time, hold time, clock skew, etc.
• Signal Integrity: Such as eye diagram quality, jitter, crosstalk, etc.
• Environmental Requirements: Such as the impact of temperature, humidity, and power supply noise on testing.

Common HDMI Signal Integrity Physical Layer Test Items

Common test items in physical layer testing include:

• Eye Diagram Test
• Clock Jitter Analysis
• Differential Impedance Test
• Insertion Loss & Return Loss Measurements
• TDR (Time Domain Reflectometry) Test
• EMI (Electromagnetic Interference) Test
• Pre-emphasis & Equalization Testing

Commonly Used Test Instruments

The following instruments are typically used for HDMI physical layer testing:

• High-Speed Oscilloscopes (with bandwidth ≥20 GHz): Used for eye diagram, jitter, TDR, and other measurements.
• Bit Error Rate Testers (BERT): Used for link-level reliability testing.
• Vector Network Analyzers (VNA): Used for S-parameter, insertion loss, and return loss analysis.
• TDR Analyzers: Specifically used for time-domain impedance testing.
• Signal Generators / Protocol Analyzers: Used for simulating Source and Sink devices and for protocol analysis.

Test Report