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)本规程经国家计量局于1988年3月22日批准，并自1989年2月1日起施行

2、。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····························································⋯⋯(1)(二)输人灵敏度的检定···········

4、···············，··························，···············一(2)(三)最大允许相对频偏的检定···。······。···········。···········。·························⋯⋯(3)(四)测量带宽的检定··········。······················································⋯⋯‘⋯⋯(4)(五)频差倍增次数的检定·..........................................................

5、.............(5)(六)输出幅度的检定········································································⋯⋯(5)(七)比对精度的检定··························。·············································⋯⋯(5)五检定结果的处理和检定周期·.................................................................(7)附录检定记录表格式·.............

6、................................................................(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

7、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)