EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 236)

Test Results
226 FTB/IQS-85100G
Service Performance
Note: Delay variation measurements smaller than 15 μs will be discarded, not
used for the sampling process, and “< 0.015” is displayed as the minimum
value. For the Current value, Not measurable is displayed when no delay
has been measured in the last second
Errors

For Dual Test Set, errors are reported for both local to remote (L -> R)
and remote to local (R -> L). Frame Loss indicates that a sequence
number is missing in the received frames. The pass/fail verdict when
enabled reports only the verdict when it is fail. Seconds, Count, and
Rate values are reported.

Out-of-Sequence indicates that the received frame sequence number
is either smaller than the expected frame sequence number or is a
duplicate number. The Out-Of-Sequence will not be considered in the
global verdict. Seconds, Count, and Rate values are reported.
RX Frame Count
The RX Frame Count indicates the number of frames received matching
the selected service ID. For Dual Test Set, the count is reported for both
local to remote (L -> R) and remote to local (R -> L).