EXFO FTB-800 Series for FTB-1 - Manual (Page 361)

Test Results
NetBlazer 351
Summary (FC BERT)
BER
Note: See BER on page 249 for a description of each error. For BER Threshold
refer to Pass/Fail Verdict on page 130.

Bit Error Amount sets the number of bit error to be generated:
1 (default) to 50.

Inject generates, if the test is running, the amount of bit error
configured.
Round-Trip Latency

Round Trip Latency (ms) is measured for each local and remote port.
Current, Average, Minimum, and Maximum indicates respectively the
current, average, minimum, and the maximum round trip latency from
the local to the remote port in the last one second. The pass verdict is
also displayed for the maximum round trip latency.
Samples indicates the number of samples used for the round trip
latency.

Round-Trip Latency Threshold (ms) sets the round trip latency
threshold: 0.015 to 8000 ms (default is 15). This setting is only
available when Bit Error Count & Latency or Bit Error Rate &
Latency is selected as the pass/fail verdict (refer to Pass/Fail Verdict on
page 130).

Estimated BB_Credit indicates the estimated number of packets that
can be transmitted on the optical line at the same time.