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RS-485 OMNINET to Fiber Optic Modem
The S.I.Tech 2852 Bit-Driver is designed to work with "Omninet" by Corvus systems using single twisted pair cable. Model 2852 Bit-Driver is a twisted pair to fiber optic transmitter/receiver half duplex product implementing "Omninet" networking scheme. Normal operating data rate is 1 Mbps.
This fiber optic Bit-Driver product eliminates many disadvantages of twisted pair cable, especially EMI/RFI, ground loops (electrical isolation with fiber), high attenuation (high signal loss), limiting distance between nodes of Omninet (2000 feet), and potential lightning damage outdoors between buildings.
S.I.Tech Model 2852 is a standalone product allowing easy change from twisted pair to fiber: Simply disconnect two wires and connect to model 2852 input/output port. Model 2852 comes with power supply and status indicators.
|Operating Mode:||Synchronous, half duplex, 1 Mbps|
|Input/Output Interface:||RS-485, 2 wire terminal block (+, -, Ground)|
|Transmission Line Interface:||2 ST connector fiber optic
receptacles (SMA option)
|Transmission Distance:||6600 ft. (2.0 Km), (5 Km option)
|Transmitter Output Power:||30 microwatts into 50 micron fiber
|Wavelength:||820 nanometers (1300 nm option)
|Receiver Wavelength:||820 nanometers (1300 nm option)
|Minimum Sensitivity:||3 microwatts @ 820 nanometers|
|Bit Error Rate:||10-9|
|Operating Temperature:||0°C to 50°C|
|Input Power:||105 to 130 VAC 60 Hz|
|Metal Enclosure:||7.5" x 7" x 3"
(19 x 17.8 x 7.6 cm)
|Weight:||3 lbs. (1.36Kg)|
Optical unit connection: Connect the optical transmission line to the
T and R receptacles. Note which cable channel goes to T or R by noting cable imprint. On the other end, reverse the connection.
Note: Some fiber types in short distance applications may overload the receiver.