EXFO FTB-700 for FTB-1 - Manual (Page 232)

Analyzing Traces with the Bidirectional Analysis Application (Optional)
224 FTB-700 Series
Using Markers to Edit Events
3. Once the appropriate markers are selected, use one of the following
methods to move them along the trace:

Drag markers to the desired location directly on the graph using
the stylus or your finger.

Use the left/right arrows from the keypad.

Use the single-arrow buttons.

Enter a distance value in the Position box, and press .
Note: Keep in mind that when you work with the B->A trace, the trace is
presented in the opposite direction of the A->B trace, and so are the
markers. For example, instead of having the distance between span start
and A as the first element, you would have the distance between span start
and B. As another example, instead of having the distance between A and
B, you would have the distance between B and A.
Distance between
span start and B
Distance between A
and B
Distance between
span start and A
Power at A
Power difference
between A and B
Power at B