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LDM30-S - 

Limited Distance Modem, LDM30 Series, Video Displays to RS232

LDM30-S - Limited Distance Modem, LDM30 Series, Video Displays to RS232

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Product Information

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Product Overview

The LDM30-S is a General-purpose Limited Distance Modem allows video display terminals (VDTs) and other RS-232 devices to be connected over distances sufficient to cover any industrial or institutional complex of buildings. The device is designed for full-duplex, asynchronous operation over two, DC-continuity, non-loaded, twisted-wire pairs. Through special high-speed optically-coupled circuits they may communicate at data rates up to 57,600baud. The self-powered unit uses 12VAC from a wall-mounted transformer while the host-powered unit takes ±DC power from pins 9 and 10 of the RS-232 connector. The modem circuits and consequently, the host device are protected from electrical transients due to lightning strikes or operation of heavy industrial equipment.
  • DC TO 57600baud
  • Optical isolation
  • Surge protectors
  • LED diagnostic indicators
  • Operation to 3miles (5km) at 9600bd, 1 mile (1.7km) at 19,200bd, 0.5 miles (0.8km)at 57,600bbd
  • Four-wire full duplex, two-wire simplex
  • Self-powered or host-powered
  • Selection of connectors


Communications & Networking, Industrial

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