Data acquisition

[Gajanana]

Hello friends,

I have a task of acquiring continuous samples from two C series-NI9215 cards mounted on cDAQ-9171. The technique available on

http://forums.ni.com/t5/NI-DAQmx-Examples/Synchronize-Continuous-Acquisition-of-Multiple-Analog-Inpu...

does not include for the case for C series. Can somebody please help me regarding this. It would have been better if the logic behind using these blocks is also exlained as I'm a beginner in data acquisition.

Thank you all in advance,

Gajanana Abhyankar B

[dsb@NI · Accepted solution]

If both 9215 modules are in the same chassis, your code may be much simpler than the referenced example. When you want the same sample rate, synchronization of multiple channels can be as easy as adding the channels to a single task. Use the DAQ Assistant to try it out; then, 'Open the Front Panel' on the generated code to see how the channels were all added to the task.

[Gajanana]

OK fine. I have a cDAQ-9184 chassis. Is that OK if I mount a C-series NI9215 card on the same. Because the default cDAQ-9171 chassis has only one slot.

[dsb@NI · Accepted solution]

Install/configure your 9215 modules in your cDAQ-9184 chassis, and you should be able to add all the channels to a task.

Default cDAQ-9171? If your application requires hardware synchronization, you do not want to use a conglomeration of single-slot chassis. Is this simulated? By the way, simulated devices are great, but synchronized application is best verified with real hardware.

[Gajanana]

I will try. Thanks for the solution

[Gajanana]

Yeah, I mounted both NI9215 cards on cDAQ-9184, also added all 8 channels from both cards as a single task. But unable to synchronize. Is there a solution for this..?

[dsb@NI]

Here is what I see when running a shipping example with two 9215 modules installed in the same cDAQ-9174:

No modifications were required/made to the shipping example code.