AFL VFI4 User manual
VFI4 Visual Fault Identier
The VFI4 is a visible red laser source designed to troubleshoot faults on ber
optic cables.
Warning! The VFI4 is a registered
FDA Class IIIa/IEC Class 3R Laser Product.
Never look directly into optical output!
Inspecting Cables
Note: Clean connectors on cables before connecting them to VFI4!
• Attach the inspected cable to the 2.5 mm (or 1.25 mm) Universal adapter
installed on the VFI4 optical port.
• When the VFI4 is Off to turn it On in either mode:
– 2 Hz mode: Press and hold the On/Off button for 1.5 seconds
– CW mode: Press and hold the On/Off button for 3 seconds
• Green LED will illuminate to indicate that VFI4 is on.
• Observe the inspected cable for faults.
• Press the On/Off button to turn the VFI4 off.
Warranty
All AFL’s products are warranted against defective material and workman-
ship for a period of one year from the date of shipment to the original
customer. Any product found to be defective within the warranty period will
be repaired or replaced by AFL.
©2021, AFL, all rights reserved. VFI4-00-1ENG Revision AA 2021-02-05
www.AFLglobal.com | 800.235.3423
Replacing Battery
• Remove the side battery door, then pull out the battery.
• Place the battery in the unit ensuring that the [ + ] and [ – ] poles
correspond with the poles that are printed in the compartment.
• Replace the side battery door.
Note: The VFI4 contains no user serviceable parts. Except for changing
batteries, this instrument must be returned to AFL for repair.
Cleaning Optical Output
Use lint-free optical cleaning wipes such as AFL FiberWipes and optical
quality cleaning uid such as AFL FCC2 connector cleaning uid.
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