6-23
IM AQ1210-01EN
Analyzing Waveforms
6
Adjusting the Reference Level
7.
Tap the More soft key and then the Reference Level Adjust soft key. Marker
appears.
B
Reference point
Shows marker
The level at the reference point
(marker )
Section analysis values
between the reference point
and end point
B
End point
Shows marker E
Explanation
Section Analysis
In section 6.1, each item was measured with the distance reference as the reference point, but in
section analysis, each item is measured with the location that is specified as the start point within the
specified section as the reference point.
The distance, return loss, total loss, and loss per division (dB/km) between the S and E markers are
displayed on the screen.
Marker Auto Setting (set from markers)
You can automatically set marker
or marker n as the start point and marker
or marker E as the
end point.
You can use this feature to automatically set markers on waveform data in which marker
and
or n
and E are already set.
Adjusting the Reference Level
If you set marker
, which represents the reference point, the return loss is measured with this
location as the reference. The instrument uses the backscattering light level of the reference point to
calculate the return loss. If you do not set the reference point, the start point is used as the reference
point.
6.4 Analyzing Sections