GE B30 Instruction Manual page 77

3 HARDWARE
c) 100BASE-FX FIBER OPTIC PORTS
Ensure that the dust covers are installed when the fiber is not in use. Dirty or scratched connectors can lead to high
losses on a fiber link.
NOTE
Observing any fiber transmitter output can injure the eye.
The fiber optic communication ports allow for fast and efficient communications between relays at 100 Mbps. Optical fiber
can be connected to the relay supporting a wavelength of 1310 nm in multi-mode.
The fiber optic port is designed such that the response times do not vary for any core that is 100 µm or less in diameter,
62.5 µm for 100 Mbps. For optical power budgeting, splices are required every 1 km for the transmitter/receiver pair. When
splicing optical fibers, the diameter and numerical aperture of each fiber must be the same.
GE Multilin B30 Bus Differential System
3.2 WIRING
3-25