EXFO FTB-800 Series for FTB-1 - Manual (Page 343)

Test Results
NetBlazer 333
Streams - Latency
Streams - Latency
From the Test menu, tap Results, Streams, and the Latency tab.

Stream: Indicates the stream identification number.

Latency (ms) is measured for each stream on all valid frames (valid
Latency tag, expected originator identifier value, and no FCS error)
received. Current, Average, Minimum, and Maximum round-trip
latency (delay) are reported.
Note: Latency statistics are only available in loopback test topology.
Note: Delay measurements smaller than 15 μs will be discarded, not used for the
sampling process, and “< 0.015” will be displayed. For the Current value,
Not measurable is displayed when no delay has been measured in the last
second.

Thresholds button allows to set the pass/fail thresholds (refer to QoS
Metrics on page 227).