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修改时间 07-21-2015 10:56 AM
新人求教。我想从恒电位仪的电流输出口读取数据。用了SCC-68和NI-USB-6009采集卡发现都不能正确读取数据。比如我用电压表从恒电位仪直接读数得到9.8mV的电压，但是接入SCC-68的AI input和AI ground之后再用电压表测就变成了16.8mV。如果只把AI ground的连线断开再读数就会变成9.4mV（和9.8相近。用SCC-68的其他通道或者USB-6009都会出现相同的情况。导线什么的都连接完好。不知道有没有把问题说清楚。。。附件有图片。
非常感谢。
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