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USER MANUAL 750000992/16
Using an OTDR module MTS
e
Selecting measurement result display parameters
You can choose the following measurement result display parameters from the
Result menu of the OTDR TEST SETUP window:
Splice threshold: Selection between: ALL, NONE or any value in dB between
0 and 6.00 in 0.01 dB steps.
Factory default value: ALL
Reflec. threshold: Selection between: ALL, NONE or any value in dB between
-11 and -99 in 1 dB steps.
Factory default value: ALL
Slope threshold: Selection between: ALL, NONE or any value in dB/km
between 0 and 2.00 in 0.01 dB/km steps.
Factory default value: >0.10 dB/km
Note If after a measurement, no results are displayed on the trace, make
sure that the ALL parameter has been selected in the display options.
Fiber end threshold It is advised to choose the AUTO option (factory default
option) for which the end of fiber is automatically detected.
The MANUAL option allows to select a specific threshold
for the fiber end detection, from 3 to 15 dB using the «<«
and «>» arrows keys.
Display Ghosts Choose whether (yes or no) to display ghost informations.
If ghosts are displayed: the reflection icon is shown dotted
in the result table, the reflection value is shown between
parentheses on the trace; e.g. “(R:-50dB)”.
Factory default value: yes.
Note Ghosts are only detected during an automatic measurement.
Slope Method Choose between measurement methods: linear regression
(LSA) or two point.
Factory default value: LSA
Launch Cable Choose to display in the event table, the results referenced
to the launch cable.
- No: all the results are displayed and the reference is the
origin of the fiber.
- Marker 1, 2 or 3: results are referenced from the marker (1,
2 or 3 selected using the «
<« end and «>» keys). This
marker is considered as the «end of launch cable" and is the
reference for loss and distance measurements.
Factory default value: No.
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