目前石油勘探行业使用的地震仪基本上都是24位遥测数字地震仪，多数的数字地震仪都具备完善、科学的采集站和检波器指标测试功能。有些数字地震仪在进行仪器测试的同时可以把测试数据以SEG-D文件的形式记录到磁带或磁盘上。文章首先给出了数字地震仪的采集站测试的一般原理，然后以畸变测试的实际数据为例，讨论了如何从测试产生的SEG-D记录出发，根据各项指标的测试原理准确地恢复测试记录的方法；同时，本文通过计算脉冲测试记录的频谱，分析了数字地震仪采集站的滤波器类型及滤波效果。从仪器的测试记录恢复仪器指标有助于仪器使用者更深刻地理解各项指标的意义，同时为地震仪器的开发人员如何进行指标测试工作提供参考。%At present, telemetry digital seismographs are widely used, most of these digital seismographs have a perfect and scientific function of the acquisition station and sensor testing. Some digital seismographs are testing, at same time testing data can be recorded on a tape or disk in form of SEGD file. Firstly, the paper briefly introduced the acquisition station testing principle of digital seismograph. Then we took the practical data of distortion testing as a case and we discussed how to recovery the testing recording perfectly from the testing SDGD recording according to the index testing principle. At the same time, through calculation spectrum of the pulse testing recording, we analyzed the filter type and filtering effect of digital seismograph acquisition station. The study of instrument index recovery from testing recording can make the digital seismograph users have a more deep understanding on the every instrument index and provide reference for seismic instrument developer＇s index testing work.
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