Model 2853

ARCNET Coax to Fiber Optic Modem

The S.I.Tech 2853 Bit-DriverŪ is designed to work with coaxial
cable "Arcnet". Model 2853 is a coax to fiber optic transmitter/receiver full duplex product implementing "Arcnet" networking scheme. The normal operating data rate is 2.5 Mbps.

This fiber optic Bit-Driver product eliminates many disadvantages of coaxial cable, especially EMI/RFI, high attenuation (high signal loss), limiting distance between nodes of Arcnet (2000 feet coax), ground loops (electrical isolation with fiber), weight, and potential lightning damage outdoors between buildings.

S.I.Tech Model 2853 is a standalone product allowing easy change from coax to fiber: Simply disconnect the BNC connector and plug into the input/output port.

Specifications

Operating Mode:	Synchronous, simplex or full duplex, 2.5 Mbps
Input/Output Interface:	93 ohm coaxial cable BNC bulkhead jack
Transmission Line Interface:	2 ST fiber optic receptacles (SMA option)
Transmission Distance:	See distance chart
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
Metal Enclosure:	7.5" x 7" x 3" (19 x 17.8 x 7.6 cm)
Weight:	3 lbs. (1.36 kg)
Input Power:	110 VAC 50/60 Hz
230V Version:	2853V
Rack Mount Version:	2353 (3000 rack)

Operating Distance for Fiber Optic Cable

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.