AD1000 User’s Manual
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15 VFL Application
The built-in VFL of OTDR module can shoot red laser into the tested fiber, the red
laser will glow at the marco bend, breaking points and bare fiber end. The maximum
detection range for AD1000 VFL is over 5Km, it is a practical tool for fiber
identification, detecting and highlighting breaks, tight bends, splices or defective
connectors in optical fibers.
VFL is a perfect complementary tool to OTDR for its visualized detecting method in
close range like OTDR deadzone.
VFL is only available with the OTDR module equipped with VFL.
Fault locating with VFL:
1.
Clean connector properly.
2.
Connect tested fiber to VFL port.
3.
Click {
Source} in OTDR main interface.
4.
Check “CW” option to emitter laser continuously or check “Flash” to emitter
modulated laser at 1Hz.
5.
Press [VFL On] button to start VFL and the
icon will turn orange.
6.
When VFL is working, press [VFL Off] to turn off VFL and the
icon
will turn back to grey.
Fig 15.1 VFL operation
