LDM70

All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the LDM70 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)

LDM70 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 1500V DC surge
For data transmission up to 12 miles (20km)
Full 4-wire duplex or 2-wire simplex mode available
Available with a pinned male DB25 connector (LDM70-P) or a socketed female DB25 connector (LDM70-S)

The LDM70 isolated RS-232 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 LDM70 line driver is designed for full duplex, asynchronous operation over two DC-continuity, non-loaded, twisted-wire pairs. Through special highspeed optically coupled circuits, they may communicate at data rates up to 57,600 baud. A handshake operation is implemented over the same two-wire pairs. 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.

LDM70 Datasheet

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T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK

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