EXFO FTB-860, User Manual

Page: 242 / 409

FC BERT Test Setup and Results
230
FTB-860/880
Summary Results
Round Trip Latency

Round Trip Latency(ms): The round trip latency is measured for each
local and remote port. The current, average, maximum, minimum, and
sample values are reported. The pass
or fail verdict is also
displayed for the maximum round trip latency.

Current: Indicates the current round trip latency from the local to
the remote port in the last one second.

Average: Indicates the average round trip latency from the local to
the remote port.

Minimum: Indicates the minimum round trip latency from the
local to the remote port.

Maximum: Indicates the maximum round trip latency from the
local to the remote port.

Samples: Indicates the number of samples used for the round trip
latency.

Estimated BB_Credit: Indicates the estimated number of packets that
can be transmitted on the optical line at the same time.

Round-Trip Latency Threshold (ms): Select the round trip latency.
The accepted range is
0.015
to
8000 ms
. The default value is
15
.
The round trip latency is enabled if you select Bit Error Coun t &
Latency
or
Bit Error Rate
&
Latency
in the
Pass/Fail Verdict.
When you change this value, it is also updated in the Global settings.