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根据ＰＴＣＲＲ－Ｔ特性测试的要求，选用ＩＥＥＥ－４８８接口把智能万用表同计算机结合起来组成了测试系统，阐述了硬件和软件设计方法，详细分析了干扰产生的来源及抑制干扰所采取的具体措施，实践表明该系统具有广阔的应用前景。
According to the requirements of the PTCRR-T characteristic test, the IEEE-488 interface is chosen to combine the smart multimeter with the computer to form a test system. The hardware and software design methods are described. The sources of the interference and the specific measures taken to suppress the interference are analyzed in detail. Practice shows that the system has broad application prospects.