购物车  |  联系  |  info@cn.omega.com  | 
omega-qr-code OMEGA微信公众号
咨询热线 400-619-0559

Fully Isolated Limited Distance Modem, RS-232/422 Converter

LDM422 Series

Fully Isolated Limited Distance Modem, RS-232/422 Converter | LDM422 Series

Fully Isolated Limited Distance Modem, RS-232/422 Converter

查看下面所有型号

1年保修 CE
  • Complete Isolation with Optical Couplers and Power DC-to-DC Converter
  • Industrial Surge Protection Devices
  • Six LED Diagnostic Indicators
  • DC to 19,200 Baud at 6000 Feet (1800M), 9600 Baud at 3 Miles (5KM)
  • Request-to-Send, Clear-to- Send Handshake
  • Tri-State Outputs for Multidrop Applications
  • Selection of Connectors
  • Wide Operation Temperature Range
  • Solderless Screw Terminal Field Connections
通讯产品及转换器 - 查看相关产品

产品描述

The LDM422 is a compact RS-232 to RS-422 converter which features a complete electrical isolation barrier and heavy duty electrical surge protectors. These devices feature a rugged aluminum enclosure small enough to mount on the back panel of typical computer equipment, saving valuable desk and floor space. Isolation is provided by optical couplers and a DC-to-DC converter. The RS-232 connection is through male or female EIA 25-pin connectors. The RS422 connections are made through convenient solderless screw terminals. The LDM422 series is designed for full duplex operation over two-wire pairs. Outputs are tri-state, allowing multidropping of up to 32 units. Hardware handshake is available over two separate wire pairs. Data rates are 75 to 19,200 baud. Six diagnostic LED indicators are provided for installation guidance and system troubleshooting. The RS-232 interface supports Request To Send, Clear To Send, Data Set Ready, Received Line Signal Detect, and Data Terminal Ready. A convenient null modem switch is provided for the data lines. The RS-422 interface supports Request To Send and Clear To Send on separate wire pairs. The LDM422 may be used to convert two sets of send and receive channels by using RTS and CTS circuits as the second data channels. Data rates are the same. The units use 12VAC from a wall-mounted transformer or ±12VDC to pins 9 (+) and 10 (–) of the RS-232 connector. The LDM422 conforms to EIA RS-232 and RS-422 specifications. Data Terminal Ready must be asserted by the host RS-232 port before the LDM422 can transmit data. When Data Terminal Ready is not asserted all outputs of the LDM422 are high impedance, allowing up to 32 LDM422 units to be multidropped on a common communications cable. See Figure on page 2 for details. Request To Send and Clear To Send are carried through the RS-422 port as two separate wire pairs. These may be used for full duplex flow control.
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!

其他客户同时购买: 这个图标可以点击扩大,跳出的清单包括了其他客户在购买此产品时同时购买的其它产品。

产品编号产品描述
数量
产品描述
Quick Ship
Click to expand/minimize a list of what others bought with theLDM422-P
LDM422-P
¥2,635.00
货期: 2 周
 
Fully isolated limited distance modem, RS-232/422 converter, 25 pin male RS-232 connector, host-powered
Quick Ship
  
LDM422-S
咨询  
货期: 
 
 
Fully isolated limited distance modem, RS-232/422 converter, 25 pin female RS-232 connector, host-powered
Quick Ship
  
LDM422-PT
咨询  
货期: 
 
 
Fully isolated limited distance modem, RS-232/422 converter, 25 pin male RS-232 connector, transformer powered
Quick Ship
  
LDM422-ST
咨询  
货期: 
 
 
Fully isolated limited distance modem, RS-232/422 converter, 25 pin female RS-232 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.