FBM02电源模块使用配置教程使用测量机箱或机柜上选定点之间的点对点电阻
双平衡桥。外壳或机柜上任意两点之间的较大电阻应：
为1毫欧或按规定。如果电阻大于1毫欧姆,检查以确保
正确清洁粘合表面,确保所有连接牢固。（大号
可能必须添加接地电缆,以将电阻降至1毫欧姆或更低。）将检查结果记录在检查表上。如果低频和高频信号网络是分开的,则根据
前面的相应指令。如果网络同时涉及低频和高频信号,检查是否符合高频要求。将检查结果记录在
检查表。检查已安装的设备,此外,其外壳或机柜是否接地至
设施的设施地面系统,电缆每运行英尺至少提供2000 cmil,或
明确规定。将检查结果记录在检查表上。保留所有图纸,初始现场调查,检查表和期间收集的测试数据的副本
设施记录部门的施工。理想的信号系统是简单的信号发生器-负载对。内部无外来电压
环路,简单对没有干扰。然而,当当前返回路径是非理想的并且
如果存在噪声源,发电机的回路或低压侧之间将存在电压差
以及负载的返回侧或低侧。该电压差有效地出现在信号传输中
与信号发生器串联,并在负载中产生噪声电流。FBM02电源模块使用配置教程

FBM02电源模块使用配置教程Measure the point-to-point resistance between selected points on the case or cabinet with the
double balanced bridge. The maximum resistance between any two points on the case or cabinet should
be one milliohm or as specified. If the resistance is greater than one milliohm, check to see that all
bonding surfaces are properly cleaned and that all connections are securely fastened. (Larger sized
grounding cables may have to be added to reduce the resistance to one milliohm or less.) Record the results of the inspection on the inspection form. f the lower and higher frequency signal networks are separate, inspect each in accordance with
the preceding respective instructions. If the networks involve both lower and higher frequency signals,inspect for conformance with the higher frequency requirements. Record the results of the inspection on
the inspection form. Check to see that installed equipment, in addition, have their cases or cabinets grounded to the
facility ground system of the facility with a cable providing at least 2000 cmil per running foot or as
specified. Record results on the inspection form. Maintain a copy of all drawings, initial site surveys, checklists, and test data collected during
construction in the facility records department. An ideal signal system is a simple signal generator-load pair. With no extraneous voltages present within
the loop, the simple pair is free of interference. However, when the current return path is non-ideal and
sources of noise are present, a voltage difference will exist between the return or low side of the generator
and the return or low side of the load. This voltage difference effectively appears in the signal transfer
loop in series with the signal generator and produces noise currents in the load.FBM02电源模块使用配置教程