JJG953-2000精密时间间隔测量仪检定规程.pdf

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1、中华人民共和国国家计量检定规程JJG953-2000精密时间间隔测量仪PrecisionTimeIntervalMeter2000一07一09发布2000一09一15实施国家质量技术监督局发布JJG953-2000精密时间间隔测量仪检定规程口·。.伪0.~~补补0.~~一心D弓VerificationRegulationofPrecisionJJG953-2000、。。。。。一。.o.o.o.o.o.o.o.o.}TimeIntervalMeter本规程经国家质量技术监督局2000年07月09日批准，并自2000年09月15日起施行。归口单位:全国时间频率计量

2、技术委员会主要起草单位:信息产业部通信计量中心参加起草单位:中国计量科学研究院本规程由全国时间频率计量技术委员会负责解释JJG953-2000本规程主要起草人:周波(信息产业部通信计量中心)参加起草人:马凤鸣(中国计量科学研究院)陈振恒(信息产业部通信计量中心)d7G953-2000目录1范围············································································。···············、、二(1)2概述···4·······················，·······

3、·······················································⋯⋯(1)3计量性能要求···································································。··········⋯⋯(1)4通用技术要求···················。··························································⋯⋯(2)5计量器具控制····································

4、······················。···················⋯⋯(2)6检定条件··················，··························。······································⋯⋯(2)7检定项目及检定方法·····································································⋯⋯(3)7.1外观及工作正常性检查·············································

5、··················⋯⋯(3)7.2内部晶振各项指标的检定························································，·、··、·⋯(3)7.3时间间隔测量不确定度的检定······················································⋯⋯(3)7.4时间间隔测量范围的检定··············································。·············⋯⋯(4)8检定结果的处理及检定周期·...........

6、......................................................(5)附录检定证书内面格式·.......................................................................(6)JJG953-2000精密时间间隔测且仪检定规程范围本规程适用于最小间隔为1ns的精密时间间隔测量仪的首次检定和后续检定。2概述精密时间间隔测量仪测量时，将被测间隔分为两部分:大于一个时基的部分，采用普通数字式时间间隔测量仪的原理，即累计时基脉冲的个数;小于一个时基的部分，用模拟内

7、插法、数字游标法或模/数(A/D)变换法进行。测量分辨力理论上可达几个ps,但实际上由于噪声的影响，造成测量显示不稳定，目前只能做到100pso精密时间间隔测量仪(以下简称测量仪)，广泛地用在计量、通讯、高能物理等领域。计t性能要求3.1内部晶振3.1.1日老化率:优于1x10-83.1.2开机特性:优于3x10-83.1.3频率准确度:优于1x10一”3.1.4频率稳定度:优于1x10-10/1s3.2时间间隔测量3.2.1被测信号形式:两个正脉冲、两个负脉冲、一个正(负)脉冲与一个负(正)脉冲间的时间间隔;单个正、负脉冲的宽度。3.2.2被测信号电平:TT

8、L.3.2.3测量范围:1ns-10s