EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 147)

Test Setup - Test Configurator, Timer, and System
Power Blazer 135
FTFL/PT
FTFL/PT
From the Test menu, tap Setup, Test Configurator, tap on the signal block,
and on the FTFL/PT tab.
ODUx Buttons
Tap on an ODUx button to select the multiplexed level.
FTFL
Allows the configuration of the Forward and Backward ODU Fault Type
Fault Location (FTFL) to be generated.

Overwrite check box when selected generates the defined FTFL. Only
available with Through Intrusive topology and applies only to the
ODU top layer.

Fault Indication and Fault Indication Code allow the selection of the
FTFL fault indicator message/code (byte 0 for forward, byte 128 for
backward) to be generated.
Note: The Fault Indication Code field is automatically updated when the Fault
Indication is changed and vice versa.

Operator Identifier allows editing the Operator Identifier to be
generated (bytes 1 to 9 for forward, bytes 129 to 137 for backward;
9 characters allowed). By default no Operator Identifier is defined.
Fault Indication Fault Indication Code (Hex)
No fault 00 (default)
Signal fail 01
Signal Degrade 02
Reserved 03 a
a. Selecting Reserved will use the hexadecimal code 03 but, all codes from 03 to FF
are reserved for future international standardization.