VIAVI TestCenter : How do I adjust Tx port output frequency Parts Per Million (PPM) on 1 Gigabit cards or ports?
Knowledge Base - FAQ
VIAVI TestCenter : How do I adjust Tx port output frequency Parts Per Million (PPM) on 1 Gigabit cards or ports?
• PPM adjustment is not supported on 1 Gigabit cards
• IEEE 802.3 takes into consideration and allows up to +/- 100ppm tolerance levels.
• If we observe packet drops at the line rate due to less clock tolerance levels on DUTs, only way is to reduce the traffic rate