4-8
IM AQ7280-01EN
Measuring Distance
By placing the cursor on the acquired waveform, you can measure the distance to events such as
reflections and splice losses.
Using the Cursor to Measure the Distance
Follow the procedure below to measure the distance between the distance reference and the cursor.
1.
From the top menu, select
OTDR
.
2.
Turn the rotary knob to display the cursor.
3.
Move the cursor to a position where an event is displayed.
Distance reference
(measurement start position)
Cursor
Distance from the distance reference
to the cursor
Note
The location where the AQ7280 and the optical fiber cable are connected is the distance reference. To
perform more accurate measurements, zoom in on the waveform.
Using Markers to Measure the Distance
Follow the procedure below to measure the distance between two markers.
1.
From the top menu, select
OTDR
.
2.
Press the
Marker
soft key and then the
2 Point Markers
soft key to display the following
screen.
3.
Set marker
1
and marker
2
at positions where events are displayed.
1
Marker
2
Marker
1
and marker
2
Distance between marker
4.1 Analyzing Waveforms