Waveform generation with a multidevice environment

[Fv1234]

Hi, 

I 'm using DAQmx in ANSI C environment. I have 2 cards, a PCI-6221-37 pins and a PCI-6711. 

I would like to configure a DMA waveform on the 2 different cards. 

Can I create one task with 4 channels on the PCI-6711 and 2 on the PCI-6221 or, do I need to create 2 tasks with a clock synchronisation by the mean of the RTSI bus?

Thanks for your help,

FV1234

[Fv1234]

up

[ManuelR]

Hi,

You cannot have channels from two different DAQ devices configured in the same task. For example, you cannot have one Analog Input channel from "Dev 1" and one Analog Input channel from "Dev 2" configured in the same task.

If you want to use tasks to acquire or generate samples on multiple DAQ boards, you must configure a separate task for each of the devices (DAQ boards) being used.

Best regards

[ManuelR]

One more precision, if you try to configure channels from two different devices you will probably have the following error : "Error -200558 "

[Fv1234]

Thanks for your help