EXFO OTDR 2 - Manual (Page 59)

Testing Fibers
OTDR 51
Setting the Automatic Acquisition Parameters
Setting the Automatic Acquisition Parameters
When the auto-settings parameters are activated, the application
calculates the distance and pulse for the first wavelength, then for the
second wavelength, and so on. You can also enable a feature that will let
you select the optimized range and pulse for the distance as determined by
the application when the auto-settings parameters are used at least once.
To set the automatic acquisition parameters:
1. From the main window, go to the OTDR tab.
2. Go to the Time (s) dial and select the appropriate time for your test.
The default value is 15 seconds.
3. Tap AUTO.