摘要
根据JB/T 6 80 8- 1 993《模拟量输入通道模板通用技术条件》中规定的工业控制微型计算机系统中的模拟量模板的共模干扰抑制比 (CMRR)和串模干扰抑制比 (SMRR)的技术指标值 ,对不同类型输入信号的适用性进行了讨论。建议对不同种类的模板 ,应根据相应的信号量程和测量精度要求 ,规定各自的CMRR和SMRR。
In accordance with the technical specification of common mode rejection ratio (CMRR) and serial mode rejection ratio (SMRR) stated in SB/T 6808-1993 'General technical requirement of the module of analog input channel', the adaptation of the values of CMRR and SMRR for different kinds of input signals is discussed. The author suggested that different CMRR and SMRR values shall be specified to different signal ranges and different accuracy requirements.
出处
《自动化仪表》
CAS
北大核心
2004年第3期14-18,共5页
Process Automation Instrumentation
