探头式数字万用表万用表对于测量和维修人员来讲是必不可少的工具。近几年来万用表在数字显示,高输入阻抗,高精度和高分辨力方面取得了惊人的成就。由于这些成就,使维修人员进行高精度测量成为可能,一方面,在困难、复杂的场所能迅速的进行测量,但是在使用简易的万用表实现测量方面,却仍然没有取得很大的进展。现在美国的HP公司为了解决这一问题,研制了电池供电的970A型探头式万用表(3(1/2) Probes Digital Multimeters Multimeters are an essential tool for measuring and maintenance personnel. In recent years, multimeters have achieved phenomenal success in digital display, high input impedance, high accuracy and high resolution. Because of these achievements, it is possible for maintenance personnel to make high-precision measurements. On the one hand, measurements can be quickly conducted in difficult and complicated places, but no great progress has been made in using simple multimeters to make measurements. Now the United States HP company in order to solve this problem, developed a battery-powered 970A probe multimeter (3 (1/2)