User Manual

Fiber Mode Converter

Connecting to the Network

The FMC series converters with F/O connections operate over duplex ber

optic cable. This means that two separate ber optic cables are used for

data transmission. One cable is for transmitting data and the other is for

receiving data. The transmit port is designated with TX and the receive port is

designated with RX. When attaching the FMC converter to another ber optic

device, the TX port on the FMC converter must be attached to the RX port on

the other device and vice-versa. When the connection is correct, the F/O link

LED will remain lit.

Fiber optic cable connectors must match the card type i.e. (SC), and the cable

type (multimode) or (single mode). The ber optic cable must not be bundled

with too tight of a bend radius. This may attenuate the light intensity resulting

in link failure. A tight bend radius can also result in accelerated stress fracture

of the glass cable bers making premature cable failure likely.

Note: For 100 Mb/s, half-duplex operation, linking two DTEs via a ber optic

segment; the maximum transmission range is approximately 412 meters. If

an FMC converter is used to link two DTEs in half-duplex, a bit budget (bit

time delay) calculation should be made to conrm the validity of the network

topology.