EXFO PSO-200 Optical Modulation Analyzer - Manual (Page 90)

Bit Pattern Analysis and the Gearbox
82 PSO-200
Basic Gearbox Setup Details
6. Enter the offsets for the bit patterns and indicate whether they are
inverted or not. In the case of user-defined patterns, enter the bit
stream as well.
To set the bit orders and delays:
1. From the main window, select the Settings menu, then Gearbox
Stream Alignment.
2. In the window, modify the alignments and delays as needed. You can
only modify them if you have selected a global or dual X-Y stream.