Anritsu Network Master MT9090A Series, Руководство по эксплуатации, Страница: 121 / 200

MT9090A/MU909011A Network Master User’s Guide 4-23
Loss (dB)
The Loss calculated for the event is displayed in decibels (dB).
Reflectance
A reflectance value is displayed for all reflective events, while
“N/A” is displayed in the Reflectance field [Refl.(dB)] for
non-reflective events.
In addition to the reflectance value, two other indicators may
be present: S or >.
•
An “S” following the numeric value indicates that
the reflective event being measured is very close to
the top limit of the OTDR’s data set, and that it is
considered “saturated” (hitting the high limit of the
measurement ability). An “S” (saturated indicator)
will be present any time that the peak of the event
being measured is within 1 dB of the top of the
OTDR Trace graph.
•
A “>” preceding the numeric value indicates that the
reflectance measurement being made may actually
be more reflective than the current measurement is
reporting.
Out of

Dynamic Range
The point where the OTDR ran out of
dynamic range is reported if the end of
the fiber is not found and the noise floor
is encountered.
Out of

Distance Range
The point where the OTDR ran out of
distance range is reported if the end of
the fiber is not found and the end of the
trace data is encountered.