Requested sample clock source is invalid wls-9163

[vexis]

My goal is to use two accelerometers one using NI 9234 input modules and the wls-9163 wireless chassis. 

My program is attached. Here is a picture in case you dont want to download the attachment: http://www.imagebam.com/image/577a4a195651371.

The slave device is not able to use the sample clock that is output from the master over PFI1. 
I have looked through the wireless DAQ resource kit and watched the following video:

http://www.youtube.com/watch?v=g_8jiKuKeDI

and ive read this: http://zone.ni.com/devzone/cda/epd/p/id/6124

I am aware that 

I have also tried to sync two cDAQ-9178 using the same methods. I always get the error "Requested sample clock source is invalid".

The manual says it should be able to do this

http://www.ni.com/pdf/manuals/372488c.pdf

Any help would be greatly appreciated.

[KatieC · Accepted solution]

Vexis, 

Unfortunately, at this time you are unable to synchronize modules that use a delta-sigma converter (such as the NI 9234) in multiple cDAQ chassis. This is because these modules use an over sample clock that is very high; the PFI lines are unable to carry the required sample clock. You can share start triggers, but the modules individual clocks will drift over time. 

The reason the error message is saying that "Requested sample clock source is invalid" is because these modules require the use of a sample clock that is internally derived from an oversample clock timebase. 

Sorry for the bad news!

Katie