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本文从地震仪传递函数出发,用地震仪器出厂的标称参数,分别计算了DD-1型和65-67-63A型(简称673A)地震仪的初动特性,从曲线可以看出:仪器初动特性和稳态特性之间确实存在极大的差异;573A型地震仪的初动振幅在高频段比DD-1的大。提高DD-1型记录笔的固有频率,能提高高频段的初动振幅。给出了脉冲标定波形随各种参数变化时的曲线。这些曲线可在脉冲标定中,及定性分析仪器的工作状态时提供较为直观的参考资料。
Starting from the transfer function of seismometers, the initial parameters of DD-1 and 65-67-63A (673A) seismometers are calculated respectively from the factory parameters of seismometers. From the curves, it can be seen that the initial Dynamic characteristics and steady-state characteristics do exist between the great difference; 573A seismograph initial amplitude at high frequency than DD-1 large. Increasing the natural frequency of the DD-1 stylus increases the initial amplitude of the high frequency range. The curve of pulse calibration waveform with various parameters is given. These curves provide a more intuitive reference for pulse calibration and qualitative analysis of the working state of the instrument.