Hints On The Positioning Of Markers; Deleting Events; Manual Measurements; Measurements Of Slope - Viavi T-BERD/MTS 2000 User Manual

Chapter 5 Launching a reflectometry test and displaying results
Advanced functions in Expert OTDR mode

Hints on the positioning of markers

• Do not add markers (with the
the results will be recalculated automatically by the instrument.
• If two markers are too close together, they will appear on the trace and the table
but no measurement will be carried out on the second marker: to obtain results
for this marker, a manual measurement is necessary.
• If you press the
latter will be deleted.

Deleting events

To delete an event, move the cursor onto the event and press the
event selected will be deleted and a complete measurement, without this event, is
carried out.
Deletion of events can cause incorrect measurement results.

Manual measurements

As soon as you have made an acquisition, with or without automatic measurement, you
can make manual measurements on any event on the trace by means of the cursors A
and B, in association with the functions of slope, detection of splice and calculation of
ORL.
1 The manual measurements are accessible in the Results page, after pressing
the keys: Advanced, Modify meas, then

Measurements of slope

To make a manual measurement of slope, press the R
and then:
1 Place the cursor A at the beginning of the section of the trace where the slope is
to be measured.
2 Place the cursor B at the end of this section.
3 Press the
4 Press the Modify Meas. key
5 Press the
82
Set Event key when the cursor is very close to a marker, the
Advanced key
Manual key, then select Slope.
User Manual
Set Event key) after a manual measurement, as all
Manual
ESULTS
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Set Event
Measurement.
button to call up the trace
key. The