CAJ | 학술논문

线缆测试仪输出电压具有内阻高、时间短等特点，传统的方法不能满足校准的要求，从而导致结果不准确。为解决这些问题，该文在制定 JJF 1457-2014的过程中，选取典型线缆测试仪进行源内阻实验，选取常用的电压表进行响应时间实验。实验证明，线缆测试仪内部电压源阻抗大约为10 kΩ~2 MΩ，电压表响应时间约为0.5~1.0 s。通过实验，获得了应选用内阻高于1 GΩ以及响应时间应小于被校仪器输出电压持续时间的标准电压表的结论。
선람측시의수출전압구유내조고、시간단등특점，전통적방법불능만족교준적요구，종이도치결과불준학。위해결저사문제，해문재제정 JJF 1457-2014적과정중，선취전형선람측시의진행원내조실험，선취상용적전압표진행향응시간실험。실험증명，선람측시의내부전압원조항대약위10 kΩ~2 MΩ，전압표향응시간약위0.5~1.0 s。통과실험，획득료응선용내조고우1 GΩ이급향응시간응소우피교의기수출전압지속시간적표준전압표적결론。
Cable tester output voltage has the features of high resistance and short time,the traditional calibration methods can not meet the requirements,leading to inaccurate results.To solve these problems,the authors in the process of developed JJF 1457-2014,select typical cable testers to source internal resistance test,select common voltmeters to response time test.Experiments show that the cable testers internal source impedance of approximately 10 kΩ~ 2 MΩ,voltmeter response time of approximately (0.5~1.0)s.Through experiments,has reached the conclusions that the standard voltmeters internal resistance should be higher than 1 GΩand the response time should be less than the output voltage duration of the instrument was been calibrated.