How to record multi channels with DAQmx? Have used config correctly too.

[ZM]

I'm using one of the examples of the DAQmx 6009, which is cont. acquisition graph and modified it to record data. It does work fine for one channel. However, although I've configured the config utility of the DAQmx correctly for multi ai channles, still it doesn't record more than one channel. some how I think I don't know how to make it to read the right task from the configuration utility. Any help is much appreciated.
By the way, when I run what the tutorial suggests which is to run the DAQ TASK assistant, it can't even find the supported devices! But with using that example, I can record a signal correctly.

[qzxin]

You should use DAQmx Base Driver for 6009

[ZM]

How? Please advise.
ZM

[LYu]

Hi ZM,

I just want to verify that you have installed DAQmx Base 1.4, the driver which supports the USB 6009 device. If so, you should be able to find an example called USB-600X Interactive Control, which will allow you to read from multiple channels. Because USB-6009 is supported by DAQmx Base, you won't find the device in the DAQ Assistant, which uses the DAQmx driver. There is a Configuration Tool called the NI-DAQmx Base Configuration Utility (Start >> All Programs >> National Instruments >> NI-DAQmx Base) in which you can configure the tasks for the USB-6009. The device should show up in this tool. You can also use the Data Logger utility which comes with the driver to read from multiple files.

Thanks,
Lesley Y.

[ZM]

Hi Lesley,

thanks for your prompt reply. I'd done all the suggested steps. However, from one of the link that you sent I found what I was missing. I didn't know that I should've introduced channels like ai0:2 to have 3 channels for example. Thanks a lot for your help.

ZM

[Baturin]

By the way, what is the difference between DAQmx and DAQmx Base?
Are they just for different hardware? Which of them are most up to date and should be used with M-series MIO boards?
Thank you!

[Stuart_G]

If you are using an M series board you should be using DAQmx

StuartG