SN388电缆电容减小、特性阻抗增大的原因分析

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英文篇名：Analyzing the reasons of decreasing capacity and increasing characteristic impedance of SN388 cable 中文刊名：物探装备 英文刊名：Equipment for Geophysical Prospecting 作者：曹玉环 英文作者：Cao Yuhuan. 中文关键词：地震数传电缆 ; 特性阻抗 ; 线间电容 ; 交叉焊接 英文关键词：seismic data transmission cable ; characteristic impedance ; capacity between pair of data transmission cables ; cross weld 出版日期：2006-12-25 机构：江汉油田物探处 湖北潜江433100 年：2006 期：04 出版单位：物探装备

摘要

在电缆焊接过程中,电容变小、特性阻抗变大的电缆,无论从外观上还是在其它方面都与正常线一样,因此很难直观地发现其问题所在,实际工作中往往被误认为是线本身的结构出了问题而被废弃。通过对电缆进行认真剖析和反复测试—研究—实践,终于发现电容变小、特性阻抗变大是两对数传线交叉焊接所致。
Capacity-decreasing and characteristic-impedance-increasing cable is same as normal cable either in outward appearance or in other aspects during cable welding, that is difficult to find what happens in the cable and mistakes the structure of cable itself for having problem and abandons it. We finally found out the real capacity-decreasing and characteristic-impedance-increasing cause by conscientious analysis of cable and repeatedly carrying out the process of test-research-practice, that is, cross weld of two pairs of data transmission cable results in the problem and this type of cables can be turned from waste cables to normal cables when changing the cross welding to normal welding.

引文

1中国石油天然气总公司劳资局.石油地震勘探工.石油工业出版社,1998
    2杨国成.五类对绞电缆的传输性能.光纤与电缆及应用技术,1996(4)