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Step-up compliance tests for HDMI 1.3

Posted: 16 Jan 2008     Print Version  Bookmark and Share

Keywords:high-definition video  HDMI  Transition Minimized Differential Signalling 

High-Definition Multimedia Interface or HDMI ver 1.3 boasts of Deep Colour, higher speed and easier integration into personal computers by using only one cable to deliver crystal-clear, all-digital audio and high-definition video to give customers the best home theatre experience. It enables standard, enhanced or high-definition video, plus multi-channel digital audio and is independent of various DTV standards such as ATSC, DVB

(-T,-S,-C). Video data is encoded with a Transition Minimized Differential Signalling (TMDS) scheme for digital transmission over HDMI.

When running on gigabit speeds, PHY parameters like jitter became more important. The jitter budget of the data transmitter output and jitter tolerance of the receiver input have to be tested and measured. Jitter tolerance stimulates the receiver input with adjustable jitter and checks for compliance or performance margins. HDMI Compliance Test Specification tests can now be run reliably and conveniently with high-speed electrical sink and source tests. Such tests require a TMDS signal generator for electrical cable and sink tests, as well as high-bandwidth real-time oscilloscope and test automation software.

View the PDF document for more information.





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