The model N4903A is a high performance serial bit error ratio tester with advanced jitter generation capabilities for jitter-tolerance testing (J-BERT) of serial gigabit devices up to 12.5 Gb/s. This model provides a complete jitter-tolerance test solution for fast, high quality characterization of next generation serial devices. The next generation of high speed serial bus standards with data rates of 5 Gb/s and beyond is expected by 2006. The increasing speed will cause significant signal inte