Vivitek D751ST ユーザーズマニュアル

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DLP Projector—User’s Manual 
— 55 
HDMI Q & A 
Q. What is the difference between a “Standard” HDMI cable and a “High-Speed” 
HDMI cable? 
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.