说明：  依据国家相关检定规程确定自动化校准的项目。选择FLUKE公司的5720型多 功能标准源和8846A系列数字多用表作为硬件基础。用Visual Basic 6.0语言实现计算机程控、USB-GPIB接口为校准系统硬件技术方案，实现PC与多功能标准源及被校准数字多用表之间的通讯功能，使得多功能标准源可以对被校准数字多用表进行校准。
(Determine the items of automatic calibration according to relevant national verification regulations. Choose fluke's model 5720 Function standard source and 8846a series digital multimeter are used as hardware basis. Using Visual Basic 6.0 language to realize the computer program control and USB-GPIB interface is the hardware technical scheme of calibration system. The communication function between PC and multi-function standard source and calibrated digital multimeter is realized. The multi-functional standard source can calibrate the calibrated digital multimeter.)