DSC1采集站—4 MHz振荡器浅析  

An Analysis on 4MHz Oscillator of DSC1

作　　者：许华兴 

机构地区：[1]西安石油勘探仪器总厂技术监督处,710061

出　　处：《石油仪器》1995年第3期160-163,共4页Petroleum Instruments

摘　　要：数字信息向整形与传输是DSC1地震数据采集站主要功能之一，可划分为三部分：1）可控4MHz振荡发；2）具有译码功能的重复器（转发器）及相应的程控电路；3）连接传输电缆与站体的输入输出变压器。可控4MHz振荡器，作为传输系统的时钟，统一数传工作步序。振荡器授控起振；间歇振荡，即与其传输的一组数据（26位）同步起停。文章就其基本原理，精度要求做些定量分析，仅供现场操作维修人员借鉴。Xu Huaxing. An Analysis on 4 MHz Oscillator of DSC1.PI, 1995, 9 (3): 160~163 Data transmission (command word transmission included) is one of the main functions of DSC1 Seismic Data Aquisition Station (SDAs) (which consists of seismic channel,main amplifier, A/D transducer,data transmission and power).The data transrnission unit includes three parts as follows: 1) controllable 4 MHz osillator. 2) repeater functions as coding and transmiting as well as corresponding program controlled circuitry. 3) input and output tramsformer that connects transmission cables and stations. Controllable 4 MHz oscillator, as a cIock of transmission system, synchronizes the data transmission.The oscillator is controlled to start and oscillate intermittently, start and stop synchronously with a group of data (26 bits ).A quantitative analysis of the oscillator's basic principle and its precision requirments are released in this article in order that operators and maintainers in the field can benefit from this work.

关 键 词：地震数据 采集站 振荡器 地震勘探 地震仪 

分 类 号：P631.43[天文地球—地质矿产勘探]