Fluke Versiv Series Technical Reference Handbook page 453

To use the launch compensation function
On the home screen, tap SET COMP.
1
Select a launch method, make the connections shown on the
2
screen, then tap SET.
When you use launch and tail cords that have APC connectors, it
is possible that the tester will not find the connectors when you
try to set up the launch compensation function. If this occurs,
enter the lengths of the launch and tail cords manually.
For details on the launch compensation function, see "How To
Compensate for Launch and Tail Cords" on page 321.
Chapter 12: The OptiFiber Pro HDR OTDR Module
About Launch and Tail Cords for OSP Links
417