EXFO IQS-8500 Series for IQS-600 - Manual (Page 254)

Stream Analyzer Tabs
240 FTB-8500 Series and FTB-8120NGE/8130NGE
Overview

Latency Cur. (ms) indicates for each stream the current measured
round trip latency (delay) for all valid frames (valid Latency tag,
expected originator identifier value, and no FCS error) received in the
last second.

Out-Of-Sequence (OOS) indicates for each stream the total count of
valid packets having its sequence number smaller than the previously
received packet. Seconds, count, rate and percentage values are
reported.

Total Throughput indicates the total measured throughput in Mbps of
all valid frames (valid Throughput tag with no FCS error).