As an option, a Visual Fault Locator (VFL) can be installed into the Fiber OWL 4 optical power meter in place of the optical length
testing port. The VFL is an invaluable troubleshooting tool with two important uses:
Visual Fault Location.
Faults, such as breaks or microbends, can be located in the near end of the fiber link under test (within a few
feet). When the bright red laser encounters a fault, the light is deflected into the fiber jacket, producing a glow at the point of the fault.
Visual Fiber Identification.
Optical fibers can be visually identified by connecting the VFL port to the fiber under test, then inspecting
the far end for red light exiting the fiber connector.
Operation of the Optional Visual Fault Locator (VFL) Port
Connect the VFL port to the optical fiber to test.
Press
to enter the SOURCE SETTINGS menu.
Power on the VFL port by pressing
. WAVELENGTH will change to the VFL
wavelength.
OPTIONAL: press
to toggle the VFL between “flashing” and continuous mode.
When finished using the VFL port, press
to set the VFL status to OFF. It is
recommended to power off the VFL when not in use to conserve battery life.
Press
to return to the MAIN MENU.
F1
F2
F1
MENU
OPERATION/MAINTENANCE
OPTIONAL VFL (visual fault locator) PORT
WAVE
LENGTH
WAVE
------
OFF
SOURCE
_____________________
SETTINGS
TONE
AUTO
----
----
NONE
N/A
TONE
SOURCE SETTINGS
MENU