EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 150)

Test Setup - Test Configurator, Timer, and System
140 FTB/IQS-85100G
Signal - Signal Configuration (OTN)

Modify Tributary Slots/Port
The payload type 20 or 21 is indicated for each mapped OPU level.

Fixed Structure check box when selected (default) for OPU3, the
selection of a tributary slot will automatically select four tributary
slots from the same column, which constitute the foreground
traffic. When the Fixed Structure check box is cleared, select the
four tributary slots individually.
For... Mapped into... Tributary slot selection
ODU3 OPU4 31 OPU4
ODU2e
ODU1e OPU4 8 OPU4
ODU2 OPU4
OPU3 8 OPU4
4 OPU3
ODU1 OPU4
OPU3
OPU2 2 OPU4
a single OPU3
a single OPU2
ODU0 OPU4
OPU3
OPU2
OPU1 a single OPU4
a single OPU3
a single OPU2
a single OPU1
ODUflex OPU4
OPU3 up to 80 OPU4
up to 32 OPU3
ODUflex/GFP-F OPU4
OPU3 up to 8 OPU4
up to 8 OPU3