Discussion:
timestamps 2-port NI CAN Card
(too old to reply)
Share_Good
2008-04-24 06:40:06 UTC
Permalink
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
2008-04-24 14:10:11 UTC
Permalink
Hi,
 
Yes both ports use the same timebase and you should be able to compare both timestamps.
 
DirkW
Share_Good
2008-04-24 14:10:11 UTC
Permalink
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
2008-04-25 18:40:09 UTC
Permalink
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

Loading...