个并行信道。通过转发器评估板上的一对外部复用器/解复用器，并行数据由一个并行数据时钟以电的形式循环返回发射路径复用器。
用于重新定时串行发送数据的发射器参考时钟，是为接收器路径恢复时钟的延迟拷贝。一个数据FIFO能使发射器并行时钟与串行时钟不相同。然后您可以手动调整串行发送数据至串行接收数据的相位关系，以便测量串扰。BERT直接由接收器路径中的一个外部16:1复用器驱动，从而当接收器遭受发射器的串扰时，您就能独立于发射器路径来测量接收器的BER。
当串行发送数据延迟相对于串行接收数据从0至100皮秒变化时，所得BER也随之发生变化（图8）。在25°C及更高的70°C下进行测量，可得到相似的结果。在BER为10-4（或10kb 中有一个错误）的情况下，BER变化幅度为5左右。这种BER变化在光域中近似于0.3dB的灵敏度恶化。
参考文献
1. Rayas-Sanchez, JE, "A Frequency-Domain Approach to Interconnect Crosstalk Simulation and Minimization,"
Department of Electronics, Systems, and Informatics, ITESO University, Tlaquepaque, Jalisco, Mexico.
2. Vittal, A, LH Chen, M Marek-Sadowska, K Wang, and S Yang, "Crosstalk in VLSI Interconnections," IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, Volume 18, No. 12, pg 1817, December 1999.
3. Chou, H, and S Chiu, "Crosstalk Reduction and Tolerance in Deep Sub-Micron Interconnects," Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI.
4. Bockelman, DE and WR Eisenstadt, "Direct Measurement of Crosstalk Between Integrated Differential Circuits," IEEE Transactions on Microwave Theory and Techniques, Volume 48, No. 8, August 2000, pg 1410.
5. Johnson, H and M Graham, High-Speed Digital Design: A Handbook of Black Magic, Prentice Hall PTR: Upper Saddle River, NJ, 1993, pg 189.