【摘要】 在地震采集中,共模抑制比和噪声是必须考虑的指标。ARIES采集站中,共模抑制比的测试分内部共模抑制比测试和外部共模抑制比测试;噪声的测试分噪音测试和等效输入噪声测试等。本文介绍了各测试项的测试原理,分析了不同测试项对应的测试电路中的具体元器件,给出了故障出现时的检测步骤等。通过比较,了解不同测试项之间的区别和联系,以及出现故障时的维修方法,以达到快速维修的目的。更多还原

【Abstract】 For seismic acquisition,the common mode rejection ratio and noise is a very important index.To ARIES RAM,the common mode rejection ratio(CMRR)testing include the inner CMRR test and the external CMRR test;noise test includes noise test and equivalent input noise test.This paper introduces the working principle of the test,analyzed the different index which test specific components in the circuit.Then given the detection solution.By comparison,we can understand the differences and connections between the different test items,and get the related solutions in order to achieve the rapid repair.更多还原