论文部分内容阅读
1985年国家计量局颁布了经修改后的XFG-7高频信号发生器(简称G-7) 检定规程(JJG174-85)。本文将介绍执行该规程的几个主要问题。 1.标准器的选择对G-7的1V载波电平校准和检定时,首先必须选择相应的标准器,从误差上看,PS-2校准接收机、DO-1补偿式电压表或经考核定标后的超高频毫伏表都能满足要求。但当标准器通过一定的连接再对被检仪器检定时,仅考虑标准器的误差就不够了,还必须考虑整个检定系统对被检仪器提供的误差。例如,若以RS-2作为标准器,由于RS-2的高阻电压参考面在仪器L_(16)插座的端面上,而G-7的电压参考面按说明书要求在“0-1v”孔的输出端
In 1985, the State Metrology Bureau promulgated the revised XFG-7 high-frequency signal generator (referred to as G-7) verification procedures (JJG174-85). This article describes several key issues for implementing this procedure. 1. Standard Selection When calibrating and verifying the 1V carrier level of the G-7, you must first select the corresponding standardizer. From the error point of view, the PS-2 calibration receiver, the DO-1 compensated voltage meter, Scaled UHF millivoltmeter to meet the requirements. However, when the standard through a certain connection and then check the test equipment, only to consider the standard error is not enough, but also must take into account the entire test system provides the error was inspected equipment. For example, if RS-2 is used as the standard device, the RS-2 high-voltage reference plane is on the end face of the L_ (16) socket of the instrument and the voltage reference plane of G- The output