timestamps 2-port NI CAN Card

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Hi,

can anyone tell me weather the timestamps of the CAN messages received at 2 ports in a PXI-8461-2 port-Series2-high speed Card
be compared?

I have 2 applications, each using a separate CAN port connected to netwroks with different baudrates.
I am logging the frames to different files. Can i correlate the frames offline based on thier time stamps?

does the 2-port CAN Card share the same clock to add the timestamp to each CAN message at each port?
if not, are the 2 clocks synchronized so that the time stamps can be compared?

[DirkW]

Hi,

Yes both ports use the same timebase and you should be able to compare both timestamps.

DirkW

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Hi Dirkw,

Thanks.

but i did not see any hardware manual that describes that the timebase is same for both the ports in PXI-8461.
could you pls share if you have one?

[DirkW]

Within the driver manual on page 10-33: The 20 MHz Timebase applies to the entire CAN or LIN hardware, including both interfaces of a 2-port CAN card.

DirkW