回复： 那位高手指点使keithley2602和NIusb2611之间进行通讯

[acmkk]

那位高人能用NI-USB6211采集keithley2602中的电流信号，并把它转换为模拟电压输出信号。我已经成功实现了用LABVIEW控制这两台仪器，但不知道怎么使它们之间通讯（即2602产生的电流数字送给6211，然后6211把这个数字信号转换成模拟电压输出）。若那位高手能解决，一定请吃饭。

[ronke]

不是很明白你的意思,如果你是想用USB-6211测量输出电流的话, 买一只0.1欧的高精度电阻,串联在输出电流回路中,再用USB-6211测量取样电阻两端的电压就可以测量电流了.

ronke@163.com

[huyu]

So I see you can successfully control these two instruments 1. You should confirm you can read the current from keithley2602, maybe it is a string type, use convert VI to convert the string to numeric value. 2. You can control the USB-6211, can you use USB-6211 to output a constant voltage? Either use DAQmx VIs or use a DAQ assistant. Then you can wire the numeric value gained from step 1 to the voltage output terminal 3. Just run the VI, and I think you can see the voltage.