本文介绍一种新的轻便数字地震仪ＤＡＳ１。其设计特点是：双微处理器硬件结构；过采样ＡＤ转换技术的运用；线性相位和最小相位ＦＩＲ数字滤波的运用；大容量ＣＭＯＳ快闪存贮器作数据存储介质；ＧＰＳ授时和内部高精度数字钟相结合的时间服务系统；采集器功耗低于０６５Ｗ。该仪器有３个信号输入通道，０～４０Ｈｚ的带宽和１６位字长。它可方便地用于人工地震测深及天然地震流动观测 This article describes a new light digital seismograph DAS 1. Its design features are: dual microprocessor hardware structure; oversampling AD conversion technology; linear phase and minimum phase FIR digital filtering; large capacity CMOS flash memory for data storage media; GPS timing and internal high-precision Digital clock combination of time service system; collector power consumption is less than 0  65W. The instrument has three signal input channels, 0 ~ 40Hz bandwidth and 16-bit word length. It can be easily used for artificial seismic sounding and natural seismic flow observation