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Model 3503

TEMPEST RS-232 Asynchronous/Synchronous Fiber Optic Mini Modem

S.I. Tech Model 3503 TEMPEST RS-232 Asynchronous/Synchronous Fiber Optic Mini Modem

S.I. Tech Model 3503

Designed to meet TEMPEST specification
-20°C to 85°C operating range
Switch selectable speeds in sync operation
Full duplex synchronous DC to 9.6 Kbps, asynchronous DC to 19.2 Kbps with control signals
6600 ft. (2Km) distance capability
SMA connector receptacle

Operating Mode:	Asynchronous/Synchronous, full duplex with control signals
Input/Output Interface:	RS-232-C, Type D, connects to Terminal (RS-232 cable not required)
Transmission Line Interface:	SMA connector is standard for interfacing with fiber optic duplex cable (ST option)
Optical Power into a 50 Micron Core Optical Fiber:	1 microwatt, 15 dB power budget @ 850 nanometers
Receiver Sensitivity:	30 nanowatts at less than 10^-9 bit error rate
Operating Temperature:	-20 °C to 85 °C
Metal Enclosure:	1.67” x 4” x 0.87” (4.25 x 10.2 x 2.2 cm)
Weight:	0.37 lb (190 grams)
Input Power:	External power supply (S.I.Tech #2103 – 110/230 VAC to 12 VDC)

S.I. Tech Model 3503 Diagram

S.I. Tech Model 3503 Diagram