法国赛舍尔公司生产的SN388遥测地震仪 ,配套的大线快速测试器用于检测野外生产中采集大线的 48V电源电压及 5V加电信号 ,可帮助判断和排除排列故障。但该产品无电原理图 ,使用的某些器件又不通用 ,而且不能检测采集大线中的数传信号。为此在分析SN388大线快速测试器电路原理的基础上 ,开发了一种新型大线快速测试器 ,除保留原有测试功能外 ,增加了数传信号的检测及电源线的检测功能 ,其电路设计简单 ,器件通用性强 ,易于制作和维修。实验结果表明 :新型测试器可有效提高排列故障的判断及排除 The SN388 telemetry seismograph produced by France Cecil and its matched large-wire fast tester is used to detect the 48V power supply voltage and 5V power-on signal of the large-scale acquisition in field production, which can help to judge and eliminate the alignment fault. However, the product has no electrical schematic, and some of the devices used are not universal, and can not detect the digital signal in the acquisition of large lines. Based on the analysis of the circuit principle of SN388 large-wire fast tester, a new type of large-wire fast tester has been developed, which not only retains the original testing functions but also increases the detection of digital signals and the detection of power lines. Circuit design is simple, device versatility, easy to manufacture and repair. The experimental results show that the new type of tester can effectively improve the arrangement and troubleshooting