how to get the samples of the ni-9263 and ni-9201 in the same time?

[Yun_Zhu]

Hi Dannis,

I am really sorry.I  unchecked  Ignore Time Stamp and got the similar results.You can see in the second picture.They get the peak value not in the same time.Would you please tell me what can I do next?

[Dennis_Knutson]

I don't see the problem. The display seems to match the file. Zoom in on the x and y axis. I have no idea what kind of circuit you are feeding the signal into and what sort of phase delay or amplitude change you should expect.

[Yun_Zhu]

I just directly connect the 9201 channel0 and channel1 to the 9263 channel0.Like this:

AI0 and AI1 of 9201  connect AO0 of 9263;Com(no.9) of 9201 connect com(no.1) of 9263.

After changing the timestamp attribute.The result became a little bit better.I can see the difference between two channel change from two time interval to one time interval. But,this two channel still have one time internal defference.That is to say the channel1 one time interval earlier than channel0.Because channel1 one time interval earlier to arrive top and bottom than channel0.So,They are not synchronization.

[Dennis_Knutson]

Do you mean that all this time you were just doing a simple loopback? You have never been inserting the DAQ output into anything other than the DAQ input? If so, that will teach me not to ask more questions at the beginning.

With two channels being used, you are going to see some slight differences because you do not have a simultaneous sampling DAQ card.

Now, I have really no idea what you are asking for.

[Yun_Zhu]

So,It's imposible to get synchronization without simultaneous sampling DAQ card?

[Dennis_Knutson]

As already explained, the read is synched to the write.