cDAQ Matlab - same sampling rate for in- and output channels

[Michael151]

Hello everyone!

I am trying to simultaneously record and generate signals with the following hardware using Matlab:

cDAQ-9189 / NI9234 / NI9215 / NI9263

When I add all in- and output channels to one session there is the problem that the modules use their internal clock.

With which command can I assign the chassis clock to all modules?

Thanks a lot in advance!

Michael

[Tinae]

Hi Michael，

I think because of the specificity of NI9234 and the difference between 9215 and 9234，In your application, you can't assign the chassis clock to all modules. Further, Even if you assign the chassis clock to NI9234, It will still use its own clock as the sample clock source.

http://www.ni.com/tutorial/5376/en/

This tutorial explains the synchronization of analog input in great detail, In particular, the part "Delta Sigma/Reference Clock and SAR/Slow Sampled"

http://www.ni.com/pdf/manuals/374238a_02.pdf

And this is the manual of NI 9234, the Part "Data Rates" also explains the problem.

[Tinae]

Hi Michael.

Has the problem been solved?