IS200ISBBG1AAB输出卡件,DCS模块卡件
电缆应规定在850纳米（nm）波长下工作，最坏情况下，光衰减为每公里4分贝。RXM光发射器/接收器对的总光功率预算为15分贝（最坏情况下为8分贝），最大电缆长度为1.2英里（2公里）。RXM模块与行业标准ST光纤连接器兼容。规定的最坏情况下8分贝的光功率预算包括RXM发射器和接收器的光纤连接器造成的损耗。在计算最大安装电缆长度时，应考虑光纤电缆接头或接线盒耦合引起的额外损失。SRXM模块SRXM模块（型号4210-3和4211-3）经过优化，可用于9/125 mm单模光纤。电缆应规定在1300纳米（nm）波长下工作，最坏情况下光衰减为每公里0.5分贝。RXM光发射器/接收器对的总光功率预算为10.0分贝（最坏情况下为7.0分贝），最大电缆长度为7.5英里（12公里）。SRXM模块与行业标准ST光纤连接器兼容。规定的最坏情况下的光功率预算（分贝）包括由于SRXM发射器和接收器处的光纤连接器造成的损耗以及2分贝裕度/老化损耗。在计算最大安装电缆长度时，应考虑光纤电缆接头或接线盒耦合引起的额外损失。表10 RXM和SRXM模块组型号说明4200-3主要RXM模块组使用多模光纤电缆。支持3个远程RXM机箱或扩展机箱。4201-3远程RXM模块组使用多模光纤电缆。4210-3主SRXM模块组使用单模光纤电缆。支持3个远程RXM机箱或扩展机箱。4211-3远程SRXM模块组使用单模光纤电缆。46第2章Tricon v9–v10系统模拟输入模块的系统组件规划和安装指南本节介绍Tricon v9-v10系统可用的模拟输入模块。有关安装信息，请参阅第223页的更换I/O模块。所有模拟输入模块都有三个独立的输入通道。每个输入通道从每个点接收可变电压信号，将其转换为数字值，并根据需要将这些值传输到三个主处理器。为了确保每次扫描的数据正确，使用中间值选择算法选择一个值。每个输入点的感测以防止一个通道上的单个故障影响另一个通道的方式进行。3700A、3703E和3704E、3720和3721模拟输入模块提供6%的超量程测量能力。3703E提供开路输入检测，可在TriStation 1131中配置为上量程或下量程。
The cable should be specified for operation at a wave length of 850 nanometers (nm), with a worst-case optical attenuation of 4 decibels per kilometer. The RXM optical transmitter/receiver pair has a total optical power budget of 15 decibels, typical (8 decibels, worst case), which allows a maximum cable length of 1.2 miles (2 kilometers). RXM Modules are compatible with industry-standard ST fiber-optic connectors. The specified worst-case optical power budget of 8 decibels includes losses due to the fiber-optic connectors at the RXM transmitter and receiver. Additional losses incurred by fiber-optic cable splices or junction-box couplings should be considered when calculating the maximum installed cable length. SRXM Modules SRXM Modules (model 4210-3 and 4211-3) are optimized for use with 9/125 mm single-mode fiber. The cable should be specified for operation at a wave length of 1300 nanometers (nm), with a worst-case optical attenuation of 0.5 decibels per kilometer. The RXM optical transmitter/receiver pair has a total optical power budget of 10.0 decibels, typical (7.0 decibels, worst case), which allows a maximum cable length of 7.5 miles (12 kilometers). SRXM Modules are compatible with industry-standard ST fiber-optic connectors. The specified worst case optical power budget of decibels includes losses due to the fiber-optic connectors at the SRXM transmitter and receiver and 2 decibels margin/aging loss. Additional losses incurred by fiber-optic-cable splices or junction-box couplings should be considered when calculating the maximum installed cable length. Table 10 RXM and SRXM Module Sets Model Description 4200-3 Primary RXM Module Set uses multi-mode fiber optic cable. Supports 3 remote RXM Chassis or Expansion Chassis. 4201-3 Remote RXM Module Set uses multi-mode fiber optic cable. 4210-3 Primary SRXM Module Set uses single-mode fiber optic cable. Supports 3 remote RXM Chassis or Expansion Chassis. 4211-3 Remote SRXM Module Set uses single-mode fiber optic cable. 46 Chapter 2 System Components Planning and Installation Guide for Tricon v9–v10 Systems Analog Input Modules This section describes the Analog Input Modules available with Tricon v9–v10 systems. For installation information, see Replacing I/O Modules on page 223. All Analog Input Modules have three independent input channels. Each input channel receives variable voltage signals from each point, converts them to digital values, and transmits the values to the three Main Processors on demand. To ensure correct data for every scan, one value is selected using a mid-value selection algorithm. Sensing of each input point is performed in a manner that prevents a single failure on one channel from affecting another channel. The 3700A, 3703E, and 3704E, 3720, and 3721 Analog Input Modules provide a six percent overrange measurement capability. The 3703E provides open-input detection, which can be configured as upscale or downscale in TriStation 1131.
