5-20
U
SER
M
ANUAL
750000992/16
Using an OTDR module
MTS
e
•
press the <Notes table> key and select the Notes option
•
enter the note in the Edit menu.
•
press the <Exit > key.
The user can display indicators in the result table to evaluate the uncertainty
about the result. This function must be validated from the
Test Setup
menu, in
the
Result
window with the R
emarks in table
option.
Indication of the level of confidence in result table
The following remarks are possible:
Automatic detection and measurement
The automatic measurement performed at the end of the acquisition allows you
to quickly detect all the events on the trace. All the detected events are then
measured and displayed with automatic event markers. Then only the
measurement results, or a table of results, are displayed for any of the events that
are above the thresholds set in the
OTDR TEST SET UP
menu. The results are
also displayed on the trace if the
Results on trace
option of the
OTDR TEST SET
UP
menu is selected.
Indication of the level of confidence in result table
Concerning loss measurements
2c manual
Result of a manual measurement between the reference and the
cursor, “two cursor” method.
5c manual
Result of a manual measurement according to the “five cursor”
method.
Global
The loss displayed is the global result for Fresnels that are not
sufficiently separated.
Close evts
Several events being too close, only the attenuation of the last
is displayed.
Concerning slope measurements
Few points
Slope measurement using the linear regression method not
using many acquisition points.
2 points
Slope measurement using the “two point” method.
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