Product Description
The Model 272A provides the capability of performing an interface conversion
between full duplex, RS-422 signals and their equivalent for fiber optic
transmission. For applications where the transmission medium must be protected
from electrical interference, lightning, atmospheric conditions or chemical
corrosion fiber optics is the perfect solution. The Model 272A, RS-422 to
Fiber Optic Converter handles full duplex data rates to 2.5 MBPS. The
electrical interface to the RS-422 port is fully differential for transmit and
receive data and is implemented in an industry standard DB25 connector. The
fiber optic ports are implemented using the industry standard ST connectors.
The design has been optimized for 62.5/125 micron fiber cable, however other
sizes may be used. The optical signal wavelength is approximately 850nm. The
optical power budget for the Model 272A is 12 dB. In normal applications the
distance between a pair of Model 272A's will be at least 2KM (6,600 ft). Power
to operate the Model 272A is supplied by a small, wall mounted, 9 Volt AC
transformer and line cord.
