Exfo FTB-7000 OTDR Series for FTB-500 Instrukcja Użytkownika Strona 182

  • Pobierz
  • Dodaj do moich podręczników
  • Drukuj
Przeglądanie stron 181
Analyzing Traces and Events
168 OTDR
Setting the Analysis Detection Thresholds
The following examples show how different splice-loss threshold levels
can affect the number of displayed events, especially small non-reflective
events such as those caused by two splices. Three traces are shown,
corresponding to three threshold level settings.
³ Threshold at 0.05 dB
With the threshold set to 0.05 dB, two events are displayed at distances
corresponding to the location of the first and second splices.
³ Threshold at 0.1 dB
Only the first splice is displayed, as the threshold is set to 0.1 dB and
the second splice loss is lower than 0.1 dB.
³ Threshold at 0.15 dB
The first two splices are not displayed, as the threshold is set to 0.15 dB
and the first and second splice losses are lower than 0.15 dB.
Event location
Threshold
at 0.05 dB
Threshold
at 0.1 dB
Threshold
at 0.15 dB
Second spliceFirst splice
Not displayed
Not
displayed
Przeglądanie stron 181
1 2 ... 177 178 179 180 181 182 183 184 185 186 187 ... 481 482

Komentarze do niniejszej Instrukcji

Brak uwag