The Wilcom Model F6222C CATV Optical Fiber Identifier is a rugged, easy-to-use installation and maintenance instrument which identifies optical fibers by detecting the optical signals being transmitted through a singlemode fiber. The Model F6222C Optical Fiber Identifier is designed specifically to meet the needs of the CATV industry. By utilizing local detection technology (non-destructive macro-bend detection), this unit eliminates the need to open the fiber at the splice point for identification; eliminating the probability of interrupting service. This Optical Fiber Identifier detects low frequency tones at 270 Hz, 1000 Hz and 2000 Hz. When traffic is present on the fiber under test, an audible tone can be heard as well as the traffic direction which is indicated by LEDs illuminating on the probe. Comes complete with a carrying pouch containing three easy to use field interchangeable adapter heads to accommodate; 900 µm buffered fiber, ribbon or 250µm coated fiber and 3mm jacketed fiber.