基于SR620时差测量系统的设计  

Design of SR620-Based Time Offset Measurement System

作　　者：张宇 梁坤[2] 陈静 龙波[1] 韩锋[1] 黄徐瑞晗 王菊凤[1] ZHANG Yu;LIANG Kun;CHENG Jing;LONG Bo;HAN Feng;HUANG Xuruihan;WANG Jufeng(Institute for Metrology and Calibration of Guizhou,Guiyang 550003,China;National Institute of Metrology,Beijing 100029,China;Guizhou Inspection and Test Institute of Mechanic and Electronic Product Quality,Guiyang 550081,China)

机构地区：[1]贵州省计量测试院,贵阳550003 [2]中国计量科学研究院,北京100029 [3]贵州省机械电子产品质量检验检测院,贵阳550081

出　　处：《计量科学与技术》2021年第4期26-29,共4页Metrology Science and Technology

基　　金：贵州省科技计划(黔科合支撑[2019]2881号);国家重点研发计划(2017YFF0212000)。

摘　　要：时间间隔计数器目前广泛应用于时间频率校准中,针对铷频标和铯频标的计量特性测量,设计了基于SR620的时差测量系统,以测量相对频率偏差、频率稳定度和日频率漂移率,并绘制频率稳定度曲线和频率漂移率曲线。通过实验证明系统测量结果与预期相符,可有效应用于时间频率溯源及校准。Time interval counters are widely used in time and frequency calibration.Aiming at the measurement of metrological characteristics of rubidium frequency standard and cesium frequency standard,a time offset measurement system based on SR620 was designed to measure the relative frequency offset,frequency stability and daily frequency drift rate,and draw the frequency stability curve and frequency drift rate curve.The experimental results show that the measurement results of the system are expected and can be used for time and frequency traceability and calibration.

关 键 词：时间间隔计数器 时间频率 相对频率偏差 频率稳定度 日频率漂移率 时差测量系统 

分 类 号：TH714[机械工程—测试计量技术及仪器]