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本文依据ＩＥＣ６１０００－４－３场地校正测试标准程序，就电缆和光纤两种情况对场地校正全部过程作了对比实测试验，并且给出了实际的对比测试结果。在给定频率点上，电缆位置变化给实测场强值带来的最大波动范围约为３０ｄＢ左右，同时多数频率点的场强波动远超出标准中的规定值６ｄＢ。比较结果表明，光纤对电场分布的影响非常小，用光纤代替电缆是解决上述问题行之有效的措施。
In this paper, according to IEC61000-4-3 standard procedure of site calibration test, the paper compares the whole process of site calibration with cable and optical fiber, and gives the actual comparison test results. At a given frequency, the maximum fluctuation range of the measured field strength caused by the change of the cable position is about 30 dB, and the fluctuation of the field strength at most frequency points far exceeds the standard value of 6 dB. The comparison results show that the influence of optical fiber on electric field distribution is very small. It is an effective measure to solve the above problems by using optical fiber instead of cables.