Fiber Optic Modem from TSL

The Model 1250 Fiber Optic Modem has been developed by Technical Services Laboratory as a means of transmitting RS-232 data from ASOS weather instrumentation to a central Data Collection Point (DCP).

Model 1250 Fiber Optic Modem from TSL
The Model 1250 was designed to meet the original ASOS Optical Design specification while significantly reducing cost through incorporation of modern optical components.

General Description
Type Full-Duplex RS232C
Data Rate 2.4 Kbps
Data Type Asynchronous
Transmission Range 10-1500 feet
Power Interface +5VDC via signal connector or terminal block
Dimensions 2.5 x 1.3 x 1.1″
Optical Signal
Emitter Type LED
Emitter Wavelength 820-850nm
Detector Type PIN
Optical Budget 7dB Minimum
Electrical Interface
Connector Type 9-Pin “D” male (AMP 745071-1)
Range 6 feet, typical; 25 ft. max.
Environmental Max Min
Operating Temperature 120° F -60° F
Withstanding Temperature 130° F -80° F
Relative Humidity 100% 0%

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