EXFO FTB-800 Series for FTB-1 - Manual (Page 126)

Test Setup - Test Configurator, Timer, and System
116 FTB-700G/800 Series
EtherBERT and Unframed BERT
Service Disruption

No Traffic Time (ms) represents the time between two Ethernet
Frames that is acceptable without raising an alarm including a Service
Disruption event: 0.005 ms to 1000 ms in step of 0.005 ms (default is
50 ms).

Disruption Monitoring check box when selected (disabled by
default) enables the disruption time measurements. However, the
measurement will only start if the test is already started, or when the
test will be started.
Note: Clearing the Disruption Monitoring check box will stop the measurement
without clearing the results. The disruption monitoring is automatically
stopped without clearing results when the test is stopped. However, starting
the test again while the Disruption Monitoring check box is selected will
reset the results before restarting.

Pass/Fail Verdict allows to enable and configure the SDT Threshold.

SDT Threshold allows to configure the amount of time with no traffic
that is accepted before failing the test: 0.005 to 299999.995 ms in step
of 0.005 ms (default is 50 ms). The threshold value cannot be less than
the No Traffic Time value.
Shaping

TX Rate allows the selection of the transmission rate in percentage of
utilization (100% by default), Mbit/s, Gbit/s, Frame/s, or IFG. The
maximum percentage is 105% depending on the frame size selected.

Enable TX check box is automatically selected when starting the test
allowing stream generation. The Enable TX check box is automatically
cleared when the test stops. The Enable TX check box may also be
selected or cleared while the test is running.