LDM30 - 1 Port General Purpose RS-232 Line Driver


This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.


CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.

LDM30 RS-232 Line Driver
Featured in:Dataforth Communications
2 LDM30 versions available
Free delivery to UK mainland addresses

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LDM30 with male DB25 connector
LDM30 with female DB25 connector
Peripheral information
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All prices exclude VAT at current rate.
Minimum order value - £30 (exc. VAT and delivery).
Free delivery of the LDM30 to UK Mainland on orders over £150 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)
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LDM30 overview

  • Industry leading RS-232 serial line driver from Dataforth
  • Ideal for connecting RS-232 devices across long distances
  • Offers protection for your serial devices against power spikes and surges
  • Common mode isolation up to 500V DC surge
  • For data transmission up to 12 miles (20km)
  • Full data control lines including RTS, CTS, DTR, DSR
  • Full 4-wire duplex or 2-wire simplex mode available
  • Available with a pinned male DB25 connector (LDM30-P) or a socketed female DB25 connector (LDM30-S)
The LDM30 RS-232 serial line driver is designed to allow video display terminals (VDTs) and other RS-232 devices to be connected over distances sufficient to cover any industrial or institutional complex of buildings.

These limited distance modems feature a rugged aluminum enclosure small enough to mount on the back panel of VDT units, saving valuable desk and floor space.

The LDM30 line driver 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 57,600 baud.

A self-powered model and a host-powered model are available. The self-powered unit uses 12V AC 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.

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Need more info or project pricing for the LDM30?
T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK

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