Dataforth Serial to Fibre Optic Modem in No Colour
Dataforth Serial to Fibre Optic Modem in No Colour

LDM85 Series - Dataforth Serial to Fibre Optic Modem

  • LDM85-P
  • LDM85-P-025
  • LDM85-S
  • LDM85-S-025
The LDM85 is a small, inexpensive fibre optic transmitter/receiver. It features a complete RS-232/422/423 port as well as high speed TTL data transmit and receive. It is capable of data rates from DC to 5M baud. A pair of these units allows most RS-232C cable links to be replaced and extended with a duplex fibre optic cable. The normal 50-foot RS-232 limit may be extended to 1.2 miles (2 km). Fibre optic data communications provide complete EMI/RFI rejection, isolation, elimination of ground loops, and reduced error rates. Data security is enhanced by almost nonexistent electromagnetic emissions. A unique multipoint capability allows local area networks to be formed with the isolation and data security of a fibre optic data highway.
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Impulse Embedded is a leading provider of Industrial computing systems and solutions. Our customers rely on us to provide the best embedded computing products and solutions for the challenges presented by today’s industrial demands. Together with our global manufacturing partners we provide world-class innovative embedded computing and automation products and solutions suitable for multiple industrial market sectors.

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The LDM85 is a small, inexpensive fibre optic transmitter/receiver. It features a complete RS-232/422/423 port as well as high speed TTL data transmit and receive. It is capable of data rates from DC to 5M baud. A pair of these units allows most RS-232C cable links to be replaced and extended with a duplex fibre optic cable. The normal 50-foot RS-232 limit may be extended to 1.2 miles (2 km). Fibre optic data communications provide complete EMI/RFI rejection, isolation, elimination of ground loops, and reduced error rates. Data security is enhanced by almost nonexistent electromagnetic emissions. A unique multipoint capability allows local area networks to be formed with the isolation and data security of a fibre optic data highway.

The LDM85 is packaged in a rugged aluminum enclosure small enough to mount on the back panel of typical computer equipment, saving valuable desk and floor space. The RS-232 connection is through male or female EIA 25-pin connectors. The fibre optic connection is either through SMA (905) or ST connectors. Additional features include a TD/RD reversing switch for connection to DTE (Data Terminal Equipment) or DCE (Data Communication Equipment) ports, three diagnostic LED indicators, and locally connected handshake lines. The TTL port combined with the RS-232 port may be interfaced to RS-422/423 ports in 4-wire point-to-point mode only.

Fibre optic cables may be ordered with connectors factory installed.

Delivery & Returns

We offer a range of delivery options to suit your needs, please contact our friendly team for more information.

Dataforth Serial to Fibre Optic Modem

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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:

  • LDM85-P

    Serial to Fibre Optic Modem: Male DB25 connector, SMA, 905 Fibre connector

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  • LDM85-P-025

    Serial to Fibre Optic Modem: Male DB25 connector, ST Fibre connector

    View Product

  • LDM85-S

    Serial to Fibre Optic Modem: Female DB25 connector, SMA, 905 Fibre connector

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  • LDM85-S-025

    Serial to Fibre Optic Modem: Female DB25 connector, ST Fibre connector

    View Product
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