Chapter 5
Launching a reflectometry test and displaying results
Advanced functions in OTDR Expert mode
60
User Manual
770000102/08
Five points method
To carry out a splice measurement by the "five points" method:
1
Measure the slope preceding the fault to be measured, then the
slope following it.
2
Place the cursor on the fault (between the two sections).
3
Press the
Advanced
key, then
Manual Measurement
, then select
5
Pt Loss
.
4
Press validation key (
or
E
NTER
).
The splice event marker is placed on the cursor and the result is
displayed on the trace and in the table of results.
Memorization of
the position of
events
To memorize the position of events with a view to repeating the measure-
ments at the same place during a future acquisition or on another trace,
press the
Advanced
key, then select
Lock Evts
. The event memoriza-
tion icon
will appear in the title bar.
The positions memorized will then be used in the subsequent measure-
ments, 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:
NOTE
If you try to measure a splice on a slope, the measurement is not car-
ried out and the following error message is displayed: "
Slope found
between two cursors
".
NOTE
If no result is displayed, it is possible that the display threshold of the
attenuation 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 car-
ried out and the following error message is displayed:
Slope found
between two cursors
.
NOTE
This function memorizes the markers placed on the current trace.
MTS2100 4100 Module US rev08.book Page 60 Jeudi, 1. août 2013 1:43 13