The red pointer, also called visual fault locating meter or visual fault detector, sends red light to check whether the optical fiber has red light leak to locate the damage point of an optical fiber.
Context
You can directly see the position with red light leak by using the red pointer. For onsite observation, it can only be used for locating the damage point of an optical fiber in a short distance.
An optical fiber is generally damaged on the bare fiber, coiled fiber or fusion splicing point.
Precautions
DANGER:
Never look directly into the optical fiber connector or the laser transmit port on the optical port board without eye protection. Never put the optical port towards the flammables.
Procedure
- Place the red pointer on the endface of an optical fiber and send red light.
- Check whether the optical fiber has red light leak. If the red light leaks, the fiber is damaged.
- Replace or re-splice the optical fiber that has red light leak.
- Replace the optical fiber if its bending is excessively large.
NOTE:
The bending diameter of an optical fiber must be longer than 6 cm. - Splice the optical fiber again if air bubbles exist at the splicing point.
- Replace the optical fiber if its bending is excessively large.