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General Purpose Limited Distance Modem

LDM30 Series

General Purpose Limited Distance Modem | LDM30 Series

General Purpose Limited Distance Modem

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1年保修 CE
  • DC to 57,600 Baud
  • Optical Isolation
  • Surge Protectors
  • LED Diagnostic Indicators
  • Operation to 3 Miles (5 KM) at 9600 Baud, 1 Mile (1.7 KM) at 19,200, 0.5 Miles (0.8 KM) at 57,600
  • Four-Wire Full Duplex, Two-Wire Simplex
  • Self-Powered or Host-Powered
  • Selection of Connectors
  • Wide Operating Temperature Range, 0 to +70°C
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产品描述

The LDM30 Series of products 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 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 Series 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 12 Vac 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. Each device features a convenient Data-Communication Equipment (DCE) to Data-Terminal Equipment (DTE) switch which reverses pins 2 and 3 of the RS-232 connector. For installation and troubleshooting, each unit has diagnostic Light-Emitting Diodes (LEDs) on the transmit and receive lines. The RS-232 connector may be ordered as a male or female 25-pin connector. Field connection is made through a modern, solderless, screw-termination assembly. Alternatively, a convenient four-wire modular phone jack is available.
订购 所有价格均为人民币税前价格,不包括13%增值税和运费!(指定型号)
网上下单立享5%折扣!
产品编号产品描述
数量
产品描述
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LDM30-P
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货期: 
 
 
General purpose limited distance modem, 25 pin male RS-232 connector, screw termination field connector, host-powered
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LDM30-S
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General purpose limited distance modem, 25 pin female RS-232 connector, screw termination field connector, host-powered
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LDM30-PJ
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General purpose limited distance modem, 25 pin male RS-232 connector, modular phone jack field connector, host-powered
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LDM30-SJ
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General purpose limited distance modem, 25 pin female RS-232 connector, modular phone jack field connector, host-powered
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LDM30-PT
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General purpose limited distance modem, 25 pin male RS-232 connector, screw termination field connector, transformer powered
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LDM30-ST
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General purpose limited distance modem, 25 pin female RS-232 connector, screw termination field connector, transformer powered
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LDM30-PJT
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General purpose limited distance modem, 25 pin male RS-232 connector, modular phone jack field connector, transformer powered
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LDM30-SJT
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货期: 
 
 
General purpose limited distance modem, 25 pin female RS-232 connector, modular phone jack field connector, transformer powered
所有金额以RMB显示
注: Includes operator’s manual. Transformer powered units also include 120 Vac wall mount transformer.