HDMI Q & A
Q. What is the difference between a “Standard” HDMI cable and a “High-Speed”
1. Recently, HDMI Licensing, LLC announced that cables would be tested as Standard
or High-Speed cables.
2. ˙Standard (or “category 1”) HDMI cables have been tested to perform at speeds of
75Mhz or up to 2.25Gbps, which is the equivalent of a 720p/1080i signal.
3. ˙High Speed (or “category 2”) HDMI cables have been tested to perform at speeds of
340Mhz or up to 10.2Gbps, which is the highest bandwidth currently available over an
HDMI cable and can successfully handle 1080p signals including those at increased
color depths and/or increased refresh rates from the Source. High-Speed cables are
also able to accommodate higher resolution displays, such as WQXGA cinema monitors
(resolution of 2560 x 1600).
Q. How do I run HDMI cables longer than 10 meters?
4. There are many HDMI Adopters working on HDMI solutions that extend a cable’s
effective distance from the typical 10 meter range to much longer lengths. These
companies manufacture a variety of solutions that include active cables (active electronics
built into cables that boost and extend the cable’s signal), repeaters, amplifiers as well as
CAT5/6 and fiber solutions.
Q. How can I tell if a cable is an HDMI certified cable?
5. All HDMI products are required to be certified by the manufacturer as part of the HDMI
Compliance Test Specification. However, there may be instances where cables bearing
the HDMI logo are available but have not been properly tested. HDMI Licensing, LLC
actively investigates these instances to ensure that the HDMI trademark is properly used
in the market. We recommend that consumers buy their cables from a reputable source
and a company that is trusted.
For more detail information check http://www.hdmi.org/learningcenter/faq.aspx#49