MTP-200 Series User’s Manual
Shineway Technologies, Inc. - 76 -
17 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 MTP-200 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 dead zone.
VFL is only available with the OTDR module built-in VFL.
Fault locating with VFL:
Clean connector properly.
Connect tested fiber to VFL port.
Click { Source} in OTDR main interface.
Check “CW” option to emitter laser continuously or check “Flash” to emitter modulated
laser at 1Hz.
Press [VFL On] button to start VFL and the { Source} icon will turn orange.
When VFL is working, press [VFL Off] to turn off VFL and the { Source} icon
will turn back to grey.
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