Synchronize 2 PXI Systems through GPS using PXI 6552

[sundarganesh]

I want to synchronize two PXI systems separated by a distance of 5kms through GPS.

PXI 6682 is a timing and synchronization card which can be used to achieve this. I also have a requirement to use PXI 6552 HSDIO in my application. Few channels in PXI 6552 are free. So i want to know if it is possible to achieve GPS Synchronization of the two PXI systems using PXI 6552.

Regards,

Sundar Ganesh

[ryanm]

Hi Sundar,

The PXI-6682 will allow you to synchronize boards (ex. PXI-6552) in your PXI chassis'.  So I can be more helpful, can you please provide additional information on your synchronization needs?

Do you need to synchronize start triggers, sample clocks, etc.?

Do you have multiple PXI-6552 boards in each chassis? Do these boards need to be synchronized? What is the desired clock frequency for each board?

Thanks,

Ryan

[sundarganesh]

Hi Ryan,

This is a system configuration which i am doing for a requirement. The requirement is RF Generation in one PXI system and RF Acquisition in another PXI system separated by a distance of 2kms. The applications that will be running at both these PXI systems may be started at different times. So i am thinking of using a PXI card in both the chassis to synchronize them through GPS.

Regarding this, i have already contacted the local NI FSE and together with him only we have decided to go ahead with PXI 6552 for GPS Synchronization. But i started doubting the usage of 6552 for GPS synchronization when i couldnt see the card in the list of Timing and Synchronization cards.

I have attached a schematic of the configuration. Let me know which PXI card should be used for synchronising these two systems.

Regards,

Sundar

[ryanm]

Hi Sundar,

Without being part of the prior conversations, I am not sure if the PXI-6552 was suggested for another purpose.  As far as GPS synchronization, the 6552 is a high speed digital acquisition and generation card and does not have a GPS antenna or any GPS functionality built in.  For your application, it seems the PXI-6682 would be a much better fit as it has the GPS synchronization functionality you are describing.

Regards,

Ryan