Interface Converter suits defense applications.

Press Release Summary:

Featuring ruggedized design, Model 4149 operates at speeds of 1.5 Mbps for RS232-to-fiber conversion and 20 Mbps for RS485/422-to-copper conversion. Power input is protected from transients and features 3 kVdc isolation to prevent system ground loops. Powered from 9-36 Vdc input range, converter operates from -40 to +85°C and includes user-selectable fiber polarity, dual DB9 power connectors, as well as TX, RX, and power indicator LEDs.

Original Press Release:

Hi-Speed & Ruggedized for Defense - Fiber-to-RS485/422/232 Interface Converter

Electro Standards Laboratories (ESL), Cranston, RI, announces its new Model 4149 high speed ruggedized Fiber to RS485/422/232 interface converter. Typical operating speeds are 1.5 Mbps for RS232 to fiber conversion and 20 Mbps for RS485/422 to copper conversion. Model 4149 is designed to operate from -40°C to +85°C and features protection circuitry on all receivers and transmitters for both RS232 and RS485/422 interfaces. The unit's power input is protected from transients and features 3kVDC isolation to prevent system ground loops. M4149 can be powered from a wide input range of 9VDC-36VDC, with models also available for other voltage ranges such as 4.5VDC-9VDC and 18VDC-72VDC.

Other features include user-selectable fiber polarity, dual DB9 power connectors (board only) for convenience in bused power applications, TX, RX and Power indicator LEDs. The converter is available as a board only, Model 4159, with front mounting threaded brackets for rack mounting in embedded applications. This unit is also available in a desktop package with DIN rail mounting hardware for applications that require an enclosure.

For more information, contact Electro Standards Laboratories at 401-943-1164,,

Jeannette Gouin
Electro Standards Laboratories
36 Western Industrial Drive
Cranston, RI 02921
Tel: 401-943-1164
Fax: 401-946-5790

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