OPERATING INSTRUCTIONS
FIBER OPTIC VISUAL FAULT LOCATOR
(FO-VFL)
Warning
!
This tool should not be used on live electrical circuits.
It is not protected against electrical
shock!
Always use
OSHA/ANSI/CE
or other industry approved eye protection when using tools. This tool
is not to be used for purposes other than intended. Read carefully and understand instructions before using
this tool.
FO-VFL
ripley-tools.com
By
The Miller® Fiber Optic Visual Fault Locator (FO-VFL) is a visible laser
light source that helps you trace optical fibers, check fiber continuity, find
faults such as breaks, bad splices, and tight bends in fiber optic cable.
Safety Information
Warning: Class 3A Laser
To avoid possible eye damage caused by hazardous radiation:
Never look directly into the laser light output. Momentary exposure to the light output will not
damage your eyes; however, long-term exposure is potentially hazardous.
Cover the light output with the dust cap when the FO-VFL is not in use.
Do not magnify or otherwise modify the laser output. Use only approved connectors and adapters.
Operation
-
Refer to Figure 1.
1. Remove the dust cap, then clean the light output adapter and the connector on the fiber to be
tested.
2. Insert the fiber optic connector into the FO-VFL's light output adapter. Our FO-VFL's universal fiber
adapter accepts connectors with 2.5mm ferrules (SC, ST, FC, APC, E2000). Available as an option,
is a
1.25mm adapter kit, p/n 80918.
3. Press the power button to turn on the FO-VFL.
4. Press the mode button to activate the laser. Use this mode button to toggle between continuous
and pulse modes. The status LED indicates the light output status.
Status LED functions: no light = laser not activated
continuous red = continuous laser mode
slow blinking red = pulse laser mode 2-3Hz
fast blinking red = pulse laser mode 9Hz
5. Inspect the fiber for any faults, as evidenced by red light escaping the jacket. Pulse mode helps to
quickly identify breaks or bends in longer fiber.
NOTE: If laser fails to turn on, check for proper orientation of batteries and re-tighten the battery
cap.
6. Turn off the FO-VFL before disconnecting it from the fiber. Replace the dust cap.
Note: The average laser life in this product is approximately 3000 hours.
Turn power and mode button OFF when unit is not in use.
Dust Cap
Power Button
Status LED
Mode Button
Light Output
Adapter
Fig. 1
Optional 1.25mm Adapter
