Technical Note September 6, 2016 Keywords: Category 2 HDMI® High Speed Premium Certified EMI / RFI Shielding Author: Leonard Visser Volume 2, Number 6 Premium Certified HDMI® What is the difference between a High Speed (Category 2) HDMI cable and a Premium Certified HDMI cable? This technical note will point out some of the differences so you can choose the right HDMI cable for your application. Description The HDMI forum is developing future versions of the HDMI specification. HDMI 2.0b, which is backwards compatible with earlier versions of the HDMI specification, is the most recent update of the HDMI specification. Key features enabled by HDMI 2.0b are: Enables transmission of High Dynamic Range (HDR) video Bandwidth up to 18Gbps 4K @ 50/60 (2160p), which is 4 times the clarity of 1080p/60 video resolution Up to 32 audio channels for a multi-dimensional immersive audio experience Up to 1536 kHz audio sample frequency for the highest audio fidelity Simultaneous delivery of dual video streams to multiple users on the same screen Simultaneous delivery of multi-stream audio to multiple users (Up to 4) Support for the wide angle theatrical 21:9 video aspect ratio Dynamic synchronization of video and audio streams CEC extensions provide more expanded command and control of consumer electronics devices through a single control point HDMI 2.0b does not define new cables or new connectors. Current High Speed cables (Category 2 cables) are capable of carrying the increased bandwidth under most conditions. However some unanticipated technical characteristics affect reliability of these Category 2 HDMI cable assemblies, though these were found to perform reliably at speeds of 10.2 Gbps. Premium HDMI specifies a more stable and efficient signaling method than regular High Speed and Standard HDMI cables. Minimum EMI / RFI shielding is also specified. Parameter Standard HDMI (1.4b) High Speed (2.0b) ≤ 10.2 reliably ≤ 18 unreliably Premium High Speed (2.0b) Signal Speed (Gbps) ≤ 10.2 ≤ 18 EMI / RFI Shielding n/a n/a CISPR 22 @ IEC 2008 standard Class B for 30 to 230 MHz, 230 to 6000 MHz TMDS (&Enhanced) Eye Diagram Clock 165 MHz, 340 MHz 165 MHz, 340 MHz 165 MHz, 340 MHz, 600 MHz Choose the Right HDMI Cable for the Job Selecting the right HDMI cable depends on the level of video resolution and features you intend to support, and whether or not you want Ethernet connectivity. Genuine HDMI cables are clearly labeled to make this process easy: Built for most home applications, the Standard HDMI Cable can reliably transmit 1080i or 720p video. Here are the five (5) HDMI cable types used in homes and businesses, and how to tell them apart: Standard HDMI Cable: Built for most home applications, the Standard HDMI Cable can reliably transmit 1080i or 720p video. Standard HDMI Cable with Ethernet: Standard HDMI Cable performance, plus a dedicated Ethernet channel for Internet connection sharing and device networking. High Speed HDMI Cable: Designed to support video resolutions of 1080p and beyond, including advanced display technologies like 3D and 4K. Premium High Speed HDMI Cable and Premium High Speed HDMI Cable with Ethernet: Designed for ultra-reliable performance for 4K and advanced features such as higher frame rates, HDR, expanded color spaces including BT.2020 colorimetry, 4:4:4 chroma sampling, and are identified with the Premium Certified Cable Label. High Speed HDMI Cable with Ethernet: High Speed HDMI cable performance, plus a dedicated Ethernet channel. PCT Lab Testing Capability As a manufacturer of HDMI cables, and one of the first certified premium HDMI cable participants, PCT has completed an extensive upgrade of our testing capabilities. Due to the higher clock speeds of HDMI 2.0b, to verify Premium HDMI performance PCT purchased upgrades to its Agilent Vector Network Analyzer and calibration standards. We also purchased new EMI test equipment to verify shielding performance. PCT International’s lab is fully capable of premium performance verification. Item Description Value (USD) N4433A Ecal 300kHz - 20GHz 14,269 E5071CU Analyzer upgrade 19,110 F-2000-32mm-2 EMC Probe for SE 5,950 RFC-20 Ferrite Core for SE 25 39,354 PCT manufactures both High Speed (with Ethernet) and Premium High Speed (with Ethernet) HDMI cables of the highest quality. Look for the Premium Certified label whenever you need reliable performance with signal speeds of 18 Gbps. HDMI, the HDMI logo and High Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. PCT TechNote Vol 2 No 6 Page 2 of 2 © 2016.09 PCT International, Inc.