Measuring voltage on multiple modules with different sampling speed

[Hemach]

Hello,

I need to create a software for analog and digital input measurements. In the analog measurement will be voltage, rtd and thermocouples measured. It will be done via cDAQ NI-9189 with modules NI-9207, NI-9219 and NI-9213 respectively.

Now these modules have all different maximum sampling rates. It is critical, that I achieve the best sampling rates from all the modules, mainly from the 9207 on voltage measurement. How do I set up such a task? 

If I connect all the devices into one task won´t the task be slowed down to meet the slowest device sampling rate? (the thermocouples at 50 Hz)

I have only tried a simulation, which happilly exceeds the maximum sampling rate of NI-9213, so I have no idea if ti will work or not. I am currently waiting for the hardware to be shipped in, but I would like to be prepared in advance. Basic schema of the simulation attached. 

Thank you

[GerdW]

Hi Hemach,

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@Hemach wrote:

Now these modules have all different maximum sampling rates. It is critical, that I achieve the best sampling rates from all the modules, mainly from the 9207 on voltage measurement. How do I set up such a task? 

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If this is a strict requirement then you should setup 3 different DAQmx tasks, one for each module.

(Please note upon creating of a thread the used LabVIEW environment: it seems you use LabVIEW NXG…)