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1、中華人民共和國國家計量檢定規(guī)程JJG953-2000精密時間間隔測量儀PrecisionTimeIntervalMeter2000一07一09發(fā)布2000一09一15實施國家質(zhì)量技術(shù)監(jiān)督局發(fā)布JJG953-2000精密時間間隔測量儀檢定規(guī)程口·。.偽0.~~補補0.~~一心D弓VerificationRegulationofPrecisionJJG953-2000、。。。。。一。.o.o.o.o.o.o.o.o.}TimeIntervalMeter本規(guī)程經(jīng)國家質(zhì)量技術(shù)監(jiān)督局2000年07月09日批準，并自2000年09月15日起施行。歸口單位:全國時間頻率計量技術(shù)委
2、員會主要起草單位:信息產(chǎn)業(yè)部通信計量中心參加起草單位:中國計量科學研究院本規(guī)程由全國時間頻率計量技術(shù)委員會負責解釋JJG953-2000本規(guī)程主要起草人:周波(信息產(chǎn)業(yè)部通信計量中心)參加起草人:馬鳳鳴(中國計量科學研究院)陳振恒(信息產(chǎn)業(yè)部通信計量中心)d7G953-2000目錄1范圍············································································?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁ?、、二(1)2概述···4·······················，·············
3、·················································??(1)3計量性能要求···································································?！ぁぁぁぁぁぁぁぁぁ??(1)4通用技術(shù)要求···················?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ??(2)5計量器具控制·············································
4、·············?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ??(2)6檢定條件··················，··························?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ??(2)7檢定項目及檢定方法·····································································??(3)7.1外觀及工作正常性檢查·························································
5、······??(3)7.2內(nèi)部晶振各項指標的檢定························································，·、··、·?(3)7.3時間間隔測量不確定度的檢定······················································??(3)7.4時間間隔測量范圍的檢定··············································?！ぁぁぁぁぁぁぁぁぁぁぁぁ??(4)8檢定結(jié)果的處理及檢定周期·..........................
6、.......................................(5)附錄檢定證書內(nèi)面格式·.......................................................................(6)JJG953-2000精密時間間隔測且儀檢定規(guī)程范圍本規(guī)程適用于最小間隔為1ns的精密時間間隔測量儀的首次檢定和后續(xù)檢定。2概述精密時間間隔測量儀測量時，將被測間隔分為兩部分:大于一個時基的部分，采用普通數(shù)字式時間間隔測量儀的原理，即累計時基脈沖的個數(shù);小于一個時基的部分，用模擬內(nèi)插法、數(shù)字游標法或模/數(shù)(A/D)變
7、換法進行。測量分辨力理論上可達幾個ps,但實際上由于噪聲的影響，造成測量顯示不穩(wěn)定，目前只能做到100pso精密時間間隔測量儀(以下簡稱測量儀)，廣泛地用在計量、通訊、高能物理等領(lǐng)域。計t性能要求3.1內(nèi)部晶振3.1.1日老化率:優(yōu)于1x10-83.1.2開機特性:優(yōu)于3x10-83.1.3頻率準確度:優(yōu)于1x10一”3.1.4頻率穩(wěn)定度:優(yōu)于1x10-10/1s3.2時間間隔測量3.2.1被測信號形式:兩個正脈沖、兩個負脈沖、一個正(負)脈沖與一個負(正)脈沖間的時間間隔;單個正、負脈沖的寬度。3.2.2被測信號電平:TTL.3.2.3測量范圍:1ns-10s
