EXFO iOLM - Manual (Page 41)

Setting User Preferences
intelligent Optical Link Mapper 35
Naming iOLM Files Automatically
Select two, three, or four "#" if you want all values to be expressed with the
same number of digits. The application fills the empty spaces with zeros
before the increment or decrement to ensure the appropriate format is
displayed. For example, if you select two "#" and the value is to be
incremented from 1 to 10, it becomes 01, 02, 03, ... 09, 10.
Note: The identifiers defined in the Identifiers tab are displayed in the
Identification tab of the User Preferences window.
You can find the above window at User Preferences > Identification tab.
In the figure above, you can specify the values of the identifiers, such as
OLT as A, OLT measurement range as 2, ONT as B, and so on.
Note: By default, the start values specified in the Identifiers tab are displayed in
the measurement range in the table under User Preferences in the
Identification tab. See Defining Measurement Identification on page 26 for
more details.