此虚拟仪器可以控制Agilent B2900系列仪器，可以任意设定电压起始值、终止值、步长，实现VI特性及电阻测量，数据保存在用户所选定的位置（电压电流电阻三维竖排数组）并通过广义最小二乘拟合显示在波形图上。-This virtual instrument to control Agilent B2900 Series instruments, the voltage can be set start value, end value, step, to achieve VI characteristics and resistance measurements, the data stored in the user selected position (three-dimensional vertical array voltage and current resistance) by generalized least squares fit is displayed on the waveform.