A Visual Fault Locator (VFL) is an essential tool for testing and tracing cables. It is a device that is used to couple visible light into the fiber in order to visually trace and test the continuity of the cable. This is especially useful for finding breaks in the cable jacket, as the light from the VFL is bright enough to enable the user to find these breaks.
When using a VFL, one end of the cable is connected to the device, and the other end is clamped onto the cable. By sending light through the cable, the user can visually inspect the cable and check for any abnormalities. The user can identify breaks, damage, or other issues in the cable. This is a very quick and easy way to identify and diagnose issues with the cable and quickly make repairs.
The VFL is also a great tool for testing the quality of the cable, as it allows the user to measure the signal strength and attenuation of the cable. This is important for ensuring that the cable is able to carry the necessary signals without losing too much strength. The VFL also allows the user to detect any bends, kinks, or other defects in the cable, which can cause signal losses and other problems.
Overall, the Visual Fault Locator is an invaluable tool for testing and tracing cables. It is a quick and easy way to identify and diagnose any issues with the cable, as well as test the quality of the cable. This can save time and money in the long run, as it allows for quick and easy repairs and replacements of cables.