JJG545-1988-频标比对器检定规程.pdf

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1、中华人民共和国国家计量检定规程JJG545-1988频标比对器FrequencyComparator(FrequencyDifferenceMultiplier)1988一03一22发布1989一02一01实施国家计量局发布JJG545-19朋频标比对器检定规程川.ot~一~~~一一~~钾一补。、。4‘0弓VerificationRegulationof毛JJG545-1988}、4FrequencyComparator---------------沪(FrequencyDiferenceMultiplier)本规程经国家计量

2、局于1988年3月22日批准，并自1989年2月1日起施行。归口单位:中国计量科学研究院起草单位:中国计量科学研究院本规程技术条文由起草单位负责解释JJG545-1988本规程主要起草人:赵良弼(中国计量科学研究院)马凤鸣(中国计量科学研究院)JJG545-1988目录一概述···································。··········································。············。一(1)二技术要求·..........................

3、...............................................................(1)三检定条件·.........................................................................................(1)四检定项目和检定方法·..........................................................................(1)(一)外观及工作正常性的检查

4、····························································⋯⋯(1)(二)输人灵敏度的检定··························，··························，···············一(2)(三)最大允许相对频偏的检定···。······。···········。···········。·························⋯⋯(3)(四)测量带宽的检定··········。·················

5、·····································⋯⋯‘⋯⋯(4)(五)频差倍增次数的检定·.......................................................................(5)(六)输出幅度的检定········································································⋯⋯(5)(七)比对精度的检定··························。··········

6、···································⋯⋯(5)五检定结果的处理和检定周期·.................................................................(7)附录检定记录表格式·.............................................................................(8)JJG545-1988频标比对器检定规程本规程适用于新制的、使用中和修理后的P07系列频标比对器的检定。一概

7、述1频标比对器又称频差倍增器。它是基于频差倍增技术来提高频率测量系统分辨率的仪器。按其频差倍增的工作原理可分为两类:一类是采用倍频、混频法;另一类是采用分频、锁相、混频法。P07系列频标比对器属于前一种，它采用倍增后测频、倍增后测差频周期和比相的方法，配以电子计数器、数字打印机和记录仪显示其测量结果。频标比对器(以下简称比对器)主要用于测量各种原子频标及晶体振荡器定点输出频率的主要技术指标。二技术要求比对器的主要技术指标列于表to三检定条件3检定环境条件3.1环境温度可在(15-30)℃范围内任意选择，检定过程中温度变化不应超

8、过土2`C,同时不应有温度突变;3.2相对湿度:65%t15%;3.3电源电压:220(1士10%)V;3.4周围无强电磁干扰，在测试数据过程中，应避免接通或断开电子仪器及电气设备。4检定用仪器设备4.1参考频标源:应有lMHz及5MHz频率输出，输出幅度)0.5V(rms)