Visual Fault Locator are also called VFL, pen-type red light sources, visible light detector, optical fiber fault detectors, optical fiber fault locators, etc. Most of them are used to detect fiber breakpoints. According to their shortest detection distance, they are divided into: 5Km, 10Km, 15Km, 20Km, 25Km, 30Km, 35Km, 40Km, etc. Driven by a constant current source, a stable red light is emitted and connected to the optical interface to enter the optical fiber, thereby realizing the optical fiber fault detector function.
Instructions
1. Rotate and remove the end of the pen from the pen body, and put the prepared battery into the pen body with the positive pole of the battery facing inside (lighting direction);
2. Connect the end of the pen to the pen body and install it, open the dust cap, press the control switch once, observe the red light coming out of the optical interface, and at the same time indicate that the light-emitting tube is lit (be careful not to face the optical interface directly to avoid eye damage);
3. Press the control switch again to observe that the light is changed to pulse mode, indicating that the luminous tube and the light are synchronized pulse (the pulse frequency is 2-3 Hz again);
4. Press the control switch again, the light source is turned off, there is no light output, and the luminous tube is instructed to go out;
5. When testing, insert the tested fiber into the optical interface and press the control switch at the same time to select the output light source working mode (continuous or pulse);
6. After use, cover the dust cap. If you do not use it for a long time, please take out the battery to prevent the battery from rot and leak and damage the light source.
Maintenance and precautions
1. The laser is harmful, especially to protect the eyes. When the laser is working, avoid direct laser to the eyes.
2. In general, the higher the temperature, the shorter the life of the laser. Try to avoid high temperature working environment when using.
3. The VFL tip should be cleaned when the laser is working.
4. When not using the VFL, please wear a dust cap to prevent dust from falling.
5. The battery should be taken out when not in use.
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