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HDMI with Ethernet HEAC Pair Specification:
當(dāng)HDMI cable具備HEAC功能時(shí),必須針對(duì)HEAC這一對(duì)訊號(hào),以底下的高頻規(guī)格來進(jìn)行驗(yàn)證:
Intra Pair Skew: 111 ps;
Insertion Loss:
所使用的公式為: ATT Max= max( A * Sqrt(f/fo), B)
其中A=5, B=0.5, fo=100MHz.
à300KHz~10MHz <1.6dB;
à10MHz~100MHz<5dB;
à100MHz~200MHz<7.1dB。
Impedance:
Cable Area: 100 +/- 10 Ohms (1ns~2.5ns)
Transition Area: 100 +/- 15 Ohms (up to 1ns)
(此一規(guī)格允許duration 250ps,在此duration範(fàn)圍內(nèi),規(guī)格由原來的100+/-15放寬為100+/-25)
Common Mode impedance:30 +/- 6 Ohms (1ns~2.5ns)
