Page 17
FiberLink 1900 Series User’s Manual
FiberLink 1900 Series
Overall System Checkout
6 . Does the fact that the power ground, signal ground, and case are common cause a
short circuit anywhere in the system?
B. Check Optical Connectors
1 . Are the connectors being used the correct size for the fiber being used?
2 . Are the ends of the connectors free of all dust or dirt? If not, gently clean the tip of the
connector with a clean cloth or gauze moistened with alcohol .
3 . Is the fiber broken in the connector? A quick inspection with an inexpensive jeweler’s
loop can determine this .
4 . Is the fiber protruding from the tip of the connector? If so, refinishing will be necessary .
C. Check Fiber Optic Cable
1 . Is the fiber optic cable pulled too tightly around a sharp corner?
2 . Is the correct fiber size being used with the correct transmitter/receiver combination?
3 . Does the fiber pass light at all? A small penlight or flashlight can usually be used for
this test .
4 . Does the fiber have too much attenuation for the system? The attenuation measured
on the reel will always be different after the cable is installed .
5 . When using very short lengths, less than 10 meters (30 feet), overloading of the
receiver may occur . The shorter the length of the fiber, the greater the possibility for
this condition . Be sure there is adequate attenuation in any system . If this seems to be
the case, or if operation with a meter or so of fiber is required, contact the factory .
D. Check Receiver
1 . Is the operating power (DC, AC, Voltages) correct?
2 . Are the correct pins on the connector or terminal block being used?
3 . Is the optical connector on the receiver optical port clear of any obstruction or minute
dirt particles?
4 . Does it matter that the power ground and signal ground of many systems are
common?
