PCIe 2.0 3.0验证、调试和一致性测试解决方案(18)

PCIe 2.0 3.0验证、调试和一致性测试解决方案

CEM Specification Add-In Card Transmitter TestingTX measurements based on one preset value (assumption is the best preset will be used for compliance) Measurements taken after RX Equalization using the Compliance Base Board Voltage Measurements on Both Transition and Non-Transition Bits at a BER of 10-6 Eye Width Measurements taken with a sample of at least 106 UI and Eye opening is computed at 10-6Preset Number P4 P1 P0 P9 P8 P7 P5 P6 P3 P2 P10 preshoot (dB) 0.0 0.0 0.0 3.5 ±1 dB 3.5 ±1 dB 3.5 ±1 dB 1.9 ±1 dB 2.5 ±1 dB 0.0 0.0 0.0 de-emph (dB) 0.0 -3.5 ±1 dB -6.0 ±1.5 dB 0.0 -3.5 ±1 dB -6.0 ±1.5 dB 0.0 0.0 -2.5 ±1 dB -4.4 ±1.5 dB -9.5 ± 1.5 dB c-1 0.000 0.000 0.000 -0.166 -0.125 -0.100 -0.100 -0.125 0.000 0.000 0.000 c +1 0.000 -0.167 -0.250 0.000 -0.125 -0.200 0.000 0.000 -0.125 -0.200 -0.333 Va 1.000 1.000 1.000 0.668 0.750 0.800 0.800 0.750 1.000 1.000 1.000 Vb 1.000 0.668 0.500 0.668 0.500 0.400 0.800 0.750 0.750 0.600 0.333 Vc 1.000 0.668 0.500 1.000 0.750 0.600 1.000 1.000 0.750 0.600 0.333172010-4-26Tektronix Innovation Forum 2010

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