DAQ6008

[dodo1dodo]

我的卡可以检测到直流信号，但检测不到交流信号，这是为什么呢。

帖子被dodo1dodo在09-23-2005 03:11 AM时编辑过了

[Rui Liang]

i know who you're hehe, keep secret, ^_^

in MAX, select continuous mode instead of on demand. does it solve your problem?

[Rui Liang]

sorry, fogot to say, is it possible to supply more infomation about you measuremnt on AC signal, sth. like screenshot, please?

[rilee]

对，最好能多提供一些关于信号以及前级连接方面的信息，否则无法判断清楚

[dodo1dodo]

i know who you are too.

i changed AC signal to DC one in the signal generator. but i still can't get the correct one. so personally, it maybe not wrong with AC signal. i tried a puls generator produced by one of my classmate later, fortunately , i gained the expected one. however, it is too strange that why i can't the signal from signal generator. because i connect wires as the same way as you told me. i really appreciate your help.

帖子被dodo1dodo在09-23-2005 06:36 AM时编辑过了

[小刚]

我想知道你有没有使用抗混频滤波器？或者这个卡自带抗混频滤波器，如果这些频率没有被滤除，它们将会作为信号错误地出现在设备输入带宽中，你使用puls generator可以测到是因为不存在这样的现象，我想和交流还是有所不同吧。