synchronization of two PCIe6537

[pawel]

Hi

I have two PCIe6537. They are connected internally with the ribbon cable (supposedly) for synchronization.

The first card receives the clock at PFI5 to gather the digital data correctly.

How do I tell the other card to use the same clock so that they are actually synchronized through the ribbon cable?

Thanks

Pawel

[Kyle_A.]

Hi Pawel,

Which clock are you exporting over your PFI 5 line to your slave device?  If you are exporting the onboard clock from your master, you would just need to specify the Clock Source on the DAQmx Timing vi for the slave device to be PFI 5, and the DAQmx Timing vi for the master you do not have to specify a clock source.  The Timing vi will use the onboard clock as default if not specified from an external source. 

The synchronization comes from sharing the onboard clock from the master across PFI 5 to the slave device, and specifying the Clock Source for the slave card to be PFI 5.  Also, be sure you are sharing a common trigger across the two cards so that you synchronize start times.