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Advice needed for evaluating impedance of HDMI connector

Question asked by cmwong on Feb 9, 2011
Latest reply on Feb 10, 2011 by algoss

With reference to the HDMI spec. ver 1.4a, there is a requirement for HDMI connector to meet impedance specification at 200ps [10%~90%] rise time. I would like to know if this is the rise time entering the connector? If so, it will be know as the incident rise time. As such, I would kindly need help on how to establish an incident risetime of 200ps entering the connector because most of the time what we observe on the sampling scope is the reflected rise time. Please correct me if I am wrong.

Your kind advice is very much appreciated. Thank you very much.

Best regards,