EXFO FTB-7000 OTDR for FTB-200 v2 - Manual (Page 44)

Preparing Your OTDR for a Test
30 FTB-7000 Series
Setting Macrobend Parameters
To set macrobend parameters:
1. From the Main Menu, press OTDR Setup then select the General tab.
2. To enable the macrobend detection, select the Show macrobend
check box.
OR
To disable it, clear the check box.
3. If necessary, set the delta value as follows:
3a. From the Wavelengths list, select the pair of wavelengths for
which you want to define the delta value.
Only the combinations of wavelengths your module can support
will be available.
For more significant results, EXFO recommends to always select
the combination of wavelengths including the smallest possible
wavelength and the greatest wavelength (for example, if your
module supports 1310 nm, 1550 nm, and 1625 nm, you would
select the 1310 nm/1625 nm combination).
3b. In the Delta (loss) box, enter the desired value.
3c. Repeat steps 3a and 3b for all combinations of wavelengths.
To revert to default settings:
1. Press Default.
2. When the application prompts you, answer Yes if you want to apply the
settings to all combinations of wavelengths.