How can I synchronize clock on multiple PXI devices?

[Joaquin90ty]

Hi Yan,

why you want to use 40MHz for the PXI_Clk10_In, because the PXI_Clk10_In isn't designed for more than 10MHz. The timing module just provides a 10MHz clock, which is more accurate and has a more stable timebase. If you want to measure the clock, you can source the clock to the PXI_Clk10_In and route it to another device, which has an Clk_OUT Pin. The BNC 10MHz out should be a copy of the PXI_Clk10,but I'm not sure wheter the BNC out of 10MHz REF can more than 10MHz.

Quote of the Specifiaction:

I hope this helps and feel free to ask further questions.

Regards,

Joaquin

[Mystogan]

Hi Jo,

I was thinking to synchronize my generated 40MHz clock (with using PXIe 6674T) with my other PXI devices which has different rates.

And I thought that means I SHOULD have 40MHz synchronized through PXI_Clk10 or PXI_Clk100, and then exported to other devices.

But now I think, it could be synchronized with using PXI_Clk10, where;

when my Time module generates 40MHz clock and then synchronize it with 10MHz in PXI Clock, then I use PXI Clock as reference for my Digitizer and HSDIO, I would get all three devices (6674T, 6654, 5105) synchronized, right? Since theyre using the same reference clock (PXI clk)

Regards,

Yan.

[Joaquin90ty]

Hi Yan,

sorry for the little delay. Right, if you use the same reference clock at all three devices you got them synchronized. You generate your 10MHz reference clock from the oscillator or DDS from the timing module (6674T) and transfer it to the 6654 and 5105 over the PXI_Clk10. It's just important that you don't use more than 10MHz for the PXI_Clk10, because this line isn't designed for more frequency and it doesn't work properly if you raise your reference clock to 40MHz.

Regards,

Joaquin