NFK1-SC FLUKE NETWORKS, NFK1-SC Datasheet - Page 131

• Manufacturer Part Number: NFK1-SC
• Description: LAN Tester
• Manufacturer: FLUKE NETWORKS

Specifications of NFK1-SC

• Lead Free Status / RoHS Status: na

Top: Ghost after the cabling end.
These are not listed in the event table and generally do not indicate a fault in the cabling.
Bottom: Ghosts in the middle of the cabling.
Ghosts occurring in the middle of the cabling are listed in the event table, along with the
source of the ghosts. These can be caused by a dirty connector, a highly-reflective connector or
a connector that is not seated properly. A poorly-seated connector usually shows significant
loss, as shown in the example. A connector with the wrong type of polish can also cause strong
reflections that result in ghosts.
Ghosts caused by hidden events may not be identified as ghosts in the event table.
Tip: On traces with multiple ghosts, only the first ghost may be identified in the event table. You
can usually determine that other reflections are ghosts because they occur at multiples of
distances to connectors and they show almost no loss. Multiple ghosts from the same source
are spaced equally apart.
Table 3-7. Diagnosing Faults on OTDR Traces (cont.)
Diagnosing OTDR Test Failures
Using the OTDR
3-55
3