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为帮助使用数字地震仪的SEG用户比较各种仪器的性能,技术标准委员会提供了一套确定数字地震仪主要特性的标准。范围1.这些标准将适用于地球物理勘探记录地震数据所需的仪器;2.这些标准不包括检波器、电缆、震源和磁带记录格式;3.现行的规范及法定的实施规则,与本标准不发生矛盾。模拟参数1.输入特性1)输入阻抗规定:(1)差模输入阻抗;(2)共模输入阻抗。2)最大输入信号规定:(1)差模输入;(2)共模输入。3)共模抑制比4)仪器噪声:(1)说明(2)噪声测量/技术指标:系统条件;环境条件;
To help SEG users of digital seismographs compare the performance of various instruments, the Technical Standards Committee provides a set of criteria for determining the major characteristics of digital seismometers. Scope 1. These standards will apply to geophysical instruments required to record seismic data; 2. These standards do not include geophone, cable, source and tape recording formats; 3. Current norms and statutory rules of implementation, No contradiction occurs. Analog parameters 1. Input characteristics 1) Input impedance regulation: (1) Differential mode input impedance; (2) Common mode input impedance. 2) The maximum input signal provides: (1) differential mode input; (2) common mode input. 3) Common Mode Rejection Ratio 4) Instrument Noise: (1) Description (2) Noise Measurement / Specifications: System Conditions; Environmental Conditions;