920XC Passive Optical
Network Training
920XC Interpretation of Passive
Optical Networks
VER 1.0
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
Graticule Information
Standard Windows interface
Bulkhead
Cursor
Measured event
End of fiber
Baseline (no fiber)
Event annotation
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
The Event table field lists each
feature found with its loss and
position data
.
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
The Parameters field
shows all of the
measurement settings
for that particular
measurement.
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
The Markers field
shows position and
loss measurements
for the two cursors.
PON Measurements using the
920XC OTDR
VER 1.0
Trace Viewer Interpretation of a 100km fiber:
The Total Fiber
Information field
summarizes the
entire fiber link.
PON Measurements using the
920XC OTDR
Typical PON Installation:
VER 1.0
PON Measurements using the
920XC OTDR
VER 1.0
Looking from the Central Office:
Bulkhead
ONT #1 @ 569m
ONT #2 @ 1.09km
ONT #3 @ 2.09km
0.37dB Loss @ 4.18km
ONT #4 @ 4.93km
PON Measurements using the
920XC OTDR
VER 1.0
Looking through two 1 x 8 splitters:
4km
4km
Bulkhead
End of first 1 x 8
splitter
End of second 1 x 8
splitter
ONT
PON Measurements using the
920XC OTDR
VER 1.0
Theoretical and typical splitter losses:
1 x 2 3 – 4dB
1 x 4 6 – 7dB
1 x 8 9 – 11dB
1 x 16 12 – 15dB
1 x 32 15 - 18dB
Theoretical
PON Measurements using the
920XC OTDR
VER 1.0
Typical splice loss < 0.1dB
Typical connector loss < 0.3dB
Loss of SMF-28e+ fiber = 0.3dB/km
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