EXFO ETS-1000 - Manual (Page 111)

Configuring and Starting a Test
Ethernet Tester Analyzer 103
Packet Jitter
Packet Jitter
Another important task for Ethernet-network testing is the packet jitter
measurements. According to the RFC 4689 methodology, the packet jitter is
the absolute value of the difference between the forwarding delay of two
consecutive received packets belonging to the same stream. This
parameter is used to estimate transmission capability of latency-sensitive
traffic such as video and voice data.
Packet jitter measurement is an optional feature.

ET: Indicates the time elapsed since the test started.

RT: Indicates the time remained to the test finish.

PKTs: Indicates the summary number of received packets.

OOOPs: Indicates the number of received out-of-order packets.

%OOOPs: Indicates the quantity of received out-of-order packets
(percentage of PKTs).

INOPs: Indicates the number of packets received in the same order
they were transmitted.

%INOPs: Indicates the quantity of packets received in the same order
they were transmitted (percentage of PKTs).

< ms%PKTs: Indicates the number of packets (percentage of PKTs)
with jitter value which is less than specified threshold.