EXFO FTB-800 Series for FTB-1 - Manual (Page 113)

Test Setup - Test Configurator, Timer, and System
NetBlazer 103
BERT
For Multi-Pattern, see Multi-Pattern Configuration on page 106.
When User Pattern is selected, enter the payload pattern hexadecimal
value.

Invert check box, when selected (cleared by default), inverts the test
pattern meaning that every 0 will be changed for 1 and every 1 for 0.
For example, the pattern 1100 will be sent as 0011. Not available when
pattern is Multi-Pattern.
Bit Error

Pass/Fail Verdict allows to enable bit-error-rate pass/fail verdict by
selecting either Bit Error Count or Bit Error Rate. The default value is
Disabled.

BER Threshold allows to enter the threshold Count or Rate value that
will be used to declare the pass/fail verdict. The BER Threshold
applies to individual pattern for Multi-Pattern.
For Count, enter the maximum bit error count allowed before
declaring a fail verdict: 0 (default) to 999999.
For Rate, enter the maximum bit error rate allowed before declaring a
fail verdict: 1.0E-14 to 1.9E-01. The default value is 1.0E-12.
Service Disruption
Note: Service Disruption is not available for Multi-Pattern.
The Service Disruption Time (SDT) corresponds to the duration associated
to a defect that occurred in the network. For example a disruption that
occurs during a network switching from the active channels to the backup
channels or vice versa.
Note: The service disruption measurements are cleared when changing the
criteria.