Chapter 3
Launching a reflectometry test and displaying results
Advanced functions in Expert OTDR mode
User Manual
700MAN201 Rev. 002
67
Memorization of the position of events
Press the icon
to lock markers so all the events measured will be measured on all
future traces that are taken.
The positions memorized will then be used in the subsequent measurements, either at
the end of the manual acquisition, or when a stored trace is recalled.
The following procedure is recommended to start a measurement with markers:
1
Carry out an automatic measurement.
2
Memorize the position of the events selecting
the key
.
3
Add the manual measurements required (key
Analysis
).
CAUTION
If an event is added (with the key
) after manual measurements have been per-
formed, then all the events on the trace will be converted into AUTO markers and an
automatic measurement will be performed using these events. The previous manual
measurements will be lost.
Provided the event lock, the automatic measurement following the acquisition is carried
out using the events which were present before the acquisition.
NOTE
If no result is displayed, it is possible that the display threshold of the attenu-
ation measurement result is higher than the attenuation that you are trying to
measure.
NOTE
If you try to measure a splice on a slope, the measurement is not carried out
and the following error message is displayed:
Slope found between two
cursors
.
NOTE
This function memorizes the markers placed on the current trace.
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