Data Sheet

FEATURES
› Meets EIA RS232 and RS422/RS485 (2 or 4-wire)
specifications (Simplex or Duplex Operation)
› Two Data Channel Capability: One full duplex or two half-
duplex channels
› Only one optical fiber required between units
› Full data re-clocking and regeneration: no limit to the number
of transceiver units used within the network
› Supports supervised multiple master architecture for
unparalleled network reliability
› Remote Fault Indication allows the user to determine when a
fiber break or loss of prime operating power has occurred, or
a transceiver in the field has failed
› LED status indicators provide rapid indication of all critical
operating parameters, including the location of fiber breaks
or failed transceivers
› May be used to provide serial data protocol conversion
between nodes (consult factory)
› Designed to meet full compliance with the environmental
requirements (ambient operating temperature, mechanical
shock, vibration, humidity with condensation, high-line/low-
line voltage conditions and transient voltage protection) of
NEMA TS-1/TS-2 and the Caltrans Specification for Traffic
Signal Control Equipment.
› Robust design assures extremely high reliability in
unconditioned out-of-plant/roadside environments
› NTCIP compatible
› Voltage transient protection on all power and signal input/
output lines provides protection from power surges and other
voltage transient events.
› Wide optical dynamic range: optical attenuators are never
required
› Hot-swappable rack modules
› Interchangeable between stand-alone or rack mount –
ComFit package
› Units may be DIN-Rail mounted by the addition of ComNet
model DINBKT1 or DINBKT4 adaptor plate
› Lifetime Warranty
APPLICATIONS
› High Reliability Traffic Signalization Networks
› Access Control Networks
› Industrial Control/Factory Automation and SCADA Networks
› Serial Data Protocol Conversion
The ComNet™ FDX72(M,S)1 series Drop-Insert-Repeat Transceiver unit is a fully-
digital modem designed for implementing RS232, RS422 or RS485 2 or 4-wire data
communications networks of the highest possible reliability. A network of FDX72
units can support one full-duplex or two half-duplex data channels. These transceivers
also feature data translation to convert between data protocols. Data re-clocking
and regeneration permit an almost unlimited number of transceiver/controller units
to be used within the network. These environmentally hardened transceivers are
ideal for use in unconditioned out-of-plant or roadside installations and, unlike many
competing designs, only one optical fiber is required between units. Combine these
units with the ComNet FDX70E(A,B)(M,S)1 series products as an end link to create a
linear Drop-Insert-Repeat chain. Plug-and-play design ensures ease of installation, and
no electrical or optical adjustments are ever required.
FDX72(M,S)1
Universal Data Drop & Repeat
Multi-Protocol RS232/422/485 Data Transceiver
LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427
1 OR 2*
HARDENEDINCLUDED