Chapter 5
Launching a reflectometry test and displaying results
Advanced functions in OTDR Expert mode
User Manual
770000102/08
55
Automatic
measurement
and detection
If the instrument does not detect all the expected events, additional
manual measurements can be carried out.
To delete all the markers, press the
Advanced
key, then select
Delete
.
The following procedure is recommended:
1
By default, the instrument locates the events and proceeds to the
measurements.
2
Addition of events (see
“Addition of events” on page 55
)
in the cases
of splices showing low attenuation and of close events. The T-
BERD/MTS then automatically measures the slope before and after
the markers selected and measures the attenuation of the splice.
3
Addition of manual measurements
if necessary (for deeper anal-
ysis). The T-BERD/MTS performs the measurements requested by
the user.
To start an automatic measurement while a measurement is already in
progress:
1
Press the
Advanced
key.
2
Select
Delete
and press validation key (
or
E
NTER
).
3
Select
Auto Meas.
and press validation key (
or
E
NTER
).
Addition of
events
You can also manually place markers in addition to those positioned
automatically during automatic measurement.
Representation of the events
The events are represented by the symbol
: if they are set during a
measurement.
The events are represented by the symbol if they are set manually in
Advanced
mode.
To add markers of events:
1
Select a cursor (A or B).
2
Use the direction keys or touchscreen to move the cursor to the
place where you want to position a marker.
3
Press the keys:
Advanced
>
Set
Event
.
4
An event marker is displayed at the position of the cursor and a
measurement is carried out on the event.
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