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LDM70 Series

LDM70 Series

分  类：其它

品  牌：欧米茄

厂  商：Omega工业测量（中国）

型  号：LDM70 Series

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发布时间：2019-12-19 18:16 浏览人数：人

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    参数
    包装
    • DC to 57,600 Baud
    • Complete Isolation withOptical Couplers andPower DC-to-DCConverter
    • Data Terminal Ready,Carrier DetectHandshake Without ExtraWires
    • Surge Protectors
    • Four LED DiagnosticIndicators
    • Operation to 3 Miles(5 KM) at 9600 Baud,1 Mile (1.7 KM) at 19,200,0.5 Miles (0.8 KM) at57,600
    • Four-Wire Full Duplex,Two-Wire Simplex
    • Self-Powered orHost-Powered
    • Selection of Connectors
    • Wide OperatingTemperature Range:0 to +70°C

      • The LDM70 Series of products isdesigned to allow video displayterminals (VDTs) and other RS-232devices to be connected overdistances sufficient to cover anyindustrial or institutional complex ofbuildings. These modems feature arugged aluminum enclosure smallenough to mount on the back panelof VDT units, saving valuable deskand floor space.

      The LDM70 Series is designed forfull duplex, asynchronous operationover two DC-continuity, non-loaded,twisted-wire pairs. Through specialhigh-speed optically coupledcircuits, they may communicate atdata rates up to 57,600 baud. Ahandshake operation isimplemented over the same two-wire pairs. A self-poweredmodel and a host-powered modelare available. The self-powered unituses 12 Vac from a wall-mountedtransformer, while the host-poweredunit takes ±DC power from pins9 and 10 of the RS-232 connector.The modem circuits—and,consequently, the host device—areprotected from electrical transientsdue to lightning strikes or operationof heavy industrial equipment.

      Each device features a convenientData-Communication Equipment(DCE) to Data-Terminal Equipment(DTE) switch which reverses pins2 and 3 of the RS-232 connector.For installation and troubleshooting,each unit has diagnosticLight-Emitting Diodes (LEDs) on the transmit and receive lines. Inaddition, LEDs indicate valid carrierdetect and data terminal ready.The RS-232 connector may beordered as a male or female 25-pinconnector. Field connection is madethrough a modern, solderless,screw-termination assembly.Alternatively, a convenient four-wiremodular phone jack is available.




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    公司名称：Omega工业测量（中国）
    联系人： 王先生
    联系电话：02161973664
    手机号：
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    电子信箱：kevin.wang@cn.omega.com
    公司网站：http://cn.omega.com
    公司地址：上海市宜山路1698号102单元
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