2-18
IM AQ1210-01EN
Displaying Approximation Lines
In the 4 Point (marker mode set to Marker) or 5 Point (marker mode set to Line) marker modes, you
can display the approximation lines that are used to calculate splice loss or return loss.
OFF: Approximation lines are not displayed.
ON: Approximation lines are displayed.
Example of 4 Point Markers: Marker
1 2
3
Y2
Approximation line Y2–
3
2
1
3
Example of 5 Point Markers: Line
n
N
f
F
E
Approximation
line F–f
Approximation
line n–N
2.3 Display (OTDR) Conditions