EXFO FTB-1, User Manual

Page: 401 / 675

Test Results
NetBlazer
389
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 μ s 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 272).