Synchronize SC Express and S series cards on PXI

[GatorMech89]

Hello All,

 I am trying to synchronize the start of continuous acquisition on multiple SC Express (PXIe-4331) and S-Series (PXI-6143) cards on a single PXI chassis. Right now I am using the method described in tutorial 3615 figure 2: exporting the AI start trigger terminal on the PXIe-4331 in Slot 2 to the PXI-6143 cards on the second task. I'm getting a delay between the returned data of about 0.4ms, though. Is there a better approach than this? See code snippet.

Thank you!

[fromm8]

Hello GatorMech89,

Could you point me to the tutorial you are following? Do you have the link?

I would like to check that reference, because here you are sharing the start trigger but I do not see other kind of synchronization. I would like to check the hardware capabilities because you want to synchronize cards from different families. Just let me know if you have that reference.

Regards

Frank R.

[GatorMech89]

Sorry for the delay...conferences are certainly a great way to interrupt important tasks!

https://www.ni.com/en/support/documentation/supplemental/21/m-series-synchronization-with-labview-an...

This paper applies to M-Series devices but following its principles have gotten me close so far. Just wondering what I am missing.

[fromm8]

Hello GatorMech89,

Using this document (Synchronizing S Series) and this other one (Synchronizing SC Express Devices) as references, we can discard a reference clock synchronization. I think you could try a sample clock synchronization.
Here I linked below a couple of examples to do this kind of sync. They do the same in different ways.

https://forums.ni.com/t5/Community-Documents/Sync-DSA-SC-Express-and-MultifunctionDAQ-Card-in-One-PX...

Regards

Frank R.