Greenlee 170XL Cable tester, cable tester 52022371 Data Sheet

The 170XL visual fault locator is an indispensable tool for

quickly identifying bending losses and breaks in optical

fibers.  If a fiber is bent too tightly, red laser light will be

seen escaping through the cable jacket.  Likewise if a fiber

is broken, escaping light will be visible where the break is

located.

Connectors are easily tested using the 170XL visual fault

locator.  A fiber broken inside or past the ferrule will cause it

to glow.  If the whole connector glows, it is a defective con-

nector.  If the end face polish of the connector is bad, light

will be reflected internally.