EXFO AXS-100 Series OTDR - Manual (Page 35)

OTDR 27
Setting the Acquisition Parameters
To set the IOR, backscatter, and helix factor parameters:
1. Press Menu, select Setup > OTDR, and then
press Enter.
2. Display the Acquisition pane (F1/F2 key).
3. Use the up/down arrows to select the
wavelength box, and then press Enter to
open it.
4. Select the wavelength for which you want to modify parameters. Press
Enter to confirm your choice.
5. Use the arrows to select any of the settings, and then press Enter to
display the on-screen keyboard (for details about using keyboards, see
Using Menus and Keypad on page 13).
6. Enter the new value and press OK (F1/F2 key).
As you enter the value, the application indicates the minimum or
maximum value allowed.
I
MPORTANT
Do not change the default backscatter parameter unless you have
values provided by the fiber manufacturer. If you set this parameter
incorrectly, your reflectance measurements will be inaccurate.