EXFO FIP-400B Fiber Inspection Probe and ConnectorMax2 - Manual (Page 23)

Setting up Your Fiber Inspection Probe and ConnectorMax2
Fiber Inspection Probe 17
Setting up Autonaming
4c. Enter the start, stop and increment values as desired.
Note: The identifiers are processed in order, from the one with the largest
indentation to the one with the smallest. For a given identifier, when the
increment value reaches the stop value, the incrementation automatically
switches to the next identifier. The order of the identifiers in the increment
window (and thereby the order of increment) follows the order of the
identification window.
Note: An identifier set to None will not appear in the increment window.
Note: To decrement values, the start number must be higher than the stop
number.
4d. Tap OK to return to the Identification window.