First Packet Time (FPT) and FPT Margin
The second two graphs show First Packet Time
and FPT Margin.
The First Packet Time
graph shows the time difference between the packet's timestamp at arrival and the
Alignment Point. While the FPT Margin graph shows the time difference between the
packet's timestamp at arrival and start of packet read.
26 VB440 Studio Probe User’s Manual v6.0 © Bridge Technologies Co AS