In the test system, an intelligent digital voltage meter and a general counter E312A(without GPIB interface function) work synchronously, which eliminates the error caused by nonsynchronous sampling.

• 实现了智能数字电压表和廉价的计数器E312A(无GPIB接口功能)同步采集数据，从而可消除不同步采样所产生的误差。