1-16
IM AQ1200-01EN
1.8 Fault Locator
This feature enables you to search for breaks (faults) in an optical fiber or line. If there are no faults
in the middle of a fiber, the fiber end face is detected as a fault. You can specify the wavelength and
the loss level that is used to determine if a fault is a fiber end face or not when the AQ1200x/AQ1205x
searches for faults. You can also zoom the display scale of the measured waveform and move the
display position.
Loss level that is used to determine
whether this is the fiber end face or not
Break (fault)
You can make measurements on the selected route.
The following five routes are available.
• Normal
Searches for faults in the fiber that connects the OLT
1
and ONU
2
• OLT -> Splitter
Searches the route from the OLT to the splitter
• OLT -> Splitter -> ONU
Searches the routes from the OLT through the splitter to each ONU
• ONU -> Splitter
Searches the route from an ONU to the splitter
• ONU -> Splitter -> OLT
Searches the route from an ONU through the splitter to the OLT
1 OLT (optical line termination): the telephone exchange’s optical terminal
2 ONU (optical network unit): the user’s optical terminal
