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1、中華人民共和國(guó)國(guó)家計(jì)量檢定規(guī)程JJG953-2000精密時(shí)間間隔測(cè)量?jī)xPrecisionTimeIntervalMeter2000一07一09發(fā)布2000一09一15實(shí)施國(guó)家質(zhì)量技術(shù)監(jiān)督局發(fā)布JJG953-2000精密時(shí)間間隔測(cè)量?jī)x檢定規(guī)程口·。.偽0.~~補(bǔ)補(bǔ)0.~~一心D弓VerificationRegulationofPrecisionJJG953-2000、。。。。。一。.o.o.o.o.o.o.o.o.}TimeIntervalMeter本規(guī)程經(jīng)國(guó)家質(zhì)量技術(shù)監(jiān)督局2000年07月09日批準(zhǔn)，并自2000年09月15日起施行。歸口單位:全國(guó)時(shí)間頻率計(jì)量
2、技術(shù)委員會(huì)主要起草單位:信息產(chǎn)業(yè)部通信計(jì)量中心參加起草單位:中國(guó)計(jì)量科學(xué)研究院本規(guī)程由全國(guó)時(shí)間頻率計(jì)量技術(shù)委員會(huì)負(fù)責(zé)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(jì)量中心)參加起草人:馬鳳鳴(中國(guó)計(jì)量科學(xué)研究院)陳振恒(信息產(chǎn)業(yè)部通信計(jì)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(jì)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(jì)量器具控制····································
4、······················。···················??(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(xiàng)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(xiàng)指標(biāo)的檢定························································，·、··、·?(3)7.3時(shí)間間隔測(cè)量不確定度的檢定······················································??(3)7.4時(shí)間間隔測(cè)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(shí)間間隔測(cè)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(shí)間間隔測(cè)量?jī)x的首次檢定和后續(xù)檢定。2概述精密時(shí)間間隔測(cè)量?jī)x測(cè)量時(shí)，將被測(cè)間隔分為兩部分:大于一個(gè)時(shí)基的部分，采用普通數(shù)字式時(shí)間間隔測(cè)量?jī)x的原理，即累計(jì)時(shí)基脈沖的個(gè)數(shù);小于一個(gè)時(shí)基的部分，用模擬內(nèi)
7、插法、數(shù)字游標(biāo)法或模/數(shù)(A/D)變換法進(jìn)行。測(cè)量分辨力理論上可達(dá)幾個(gè)ps,但實(shí)際上由于噪聲的影響，造成測(cè)量顯示不穩(wěn)定，目前只能做到100pso精密時(shí)間間隔測(cè)量?jī)x(以下簡(jiǎn)稱測(cè)量?jī)x)，廣泛地用在計(jì)量、通訊、高能物理等領(lǐng)域。計(jì)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(jī)特性:優(yōu)于3x10-83.1.3頻率準(zhǔn)確度:優(yōu)于1x10一”3.1.4頻率穩(wěn)定度:優(yōu)于1x10-10/1s3.2時(shí)間間隔測(cè)量3.2.1被測(cè)信號(hào)形式:兩個(gè)正脈沖、兩個(gè)負(fù)脈沖、一個(gè)正(負(fù))脈沖與一個(gè)負(fù)(正)脈沖間的時(shí)間間隔;單個(gè)正、負(fù)脈沖的寬度。3.2.2被測(cè)信號(hào)電平:TT
8、L.3.2.3測(cè)量范圍:1ns-10s
