Operation Manual

Chapter 7: Use the OTDR
About Launch and Tail Cords
157
How to set up the launch compensation function
1 Select launch and tail cords that have the same type of fiber
as the fiber you will test.
2 On the home screen, tap the test setup panel. On the
CHANGE TEST screen, select an OTDR test to change, then tap
EDIT. Or to set up a new OTDR test, tap NEW TEST then tap
Auto OTDR, Manual OTDR, or DataCenter OTDR.
3 On the TEST SETUP screen, tap the Launch Compensation
control to set it to On.
4 On the TEST SETUP screen, make sure the Fiber Type is correct.
Change it if necessary.
5 On the TEST SETUP screen, tap SAVE.
6 On the home screen, tap the TOOLS icon, then tap Set Launch
Compensation.
7 On the SET LAUNCH METHOD screen tap the type of
compensation you want to do.
8 Clean and inspect the OTDR port and the launch/tail cord
connectors.
9 Make the connections for the type of compensation you
selected, as shown on the SET LAUNCH METHOD screen.
10 Tap SET.
11 When the SET LAUNCH COMP screen shows, select the event
or events that are the end of the launch cord and the start of
the tail cord (if you used a tail cord).
12 Tap SAVE.
Figure 68 shows an example of an OTDR trace with launch and
tail markers enabled.
Note
If you change the launch or tail cord, do the
compensation procedure again.