How To See The Launch Compensation Settings; About Virtual Launch And Tail Events - Fluke Versiv Series Technical Reference Handbook

Versiv Series Cabling Certification Product Family
Technical Reference Handbook

How To See the Launch Compensation Settings

On the home screen, tap the TOOLS icon, then tap Set Launch
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Compensation.
The SET LAUNCH METHOD screen shows the launch
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compensation settings.

About Virtual Launch and Tail Events

If launch compensation is on, and the tester does not find a
launch event when you do an OTDR test, the tester adds one at
the location specified in the launch compensation settings. These
are called virtual events. This function lets you use launch cords
that have low-reflectance connectors, such as APC connectors, at
the end you connect to the link. Because these connectors make
very small reflections or show as loss events, the tester possibly
will not find the launch event when you use such cords.
If the tester cannot find the launch and tail event when you set
up the launch compensation function, enter the lengths of the
cords manually.
If you enter the launch and tail cord lengths manually, and the
tester does not find a tail event at the location you specified, it
adds a tail event at that location. This function lets you use tail
cords that have low-reflectance connectors, such as APC
connectors, at the end of the link.
If launch compensation is on, and the tester does not find a
launch event when you do an OTDR test (within about 4 meters
of the expected location; within 0.5 meters if using manual entry),
the tester adds one at the location specified in the launch
compensation settings.
Added launch and tail events show on the EventMap and in the
event table and have 0 dB reflectance. The OTDR trace shows the
launch and tail event markers (orange, dashed lines) at the
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