Which PEAK hardware for worst-case latency testing?

[zhicks]

Hello,

I am developing a CAN FD capable device that will run on an RTOS and would like to be able to test the end-to-end latency of my implementation continuously through the products lifetime. My device doesn't have built-in hardware timestamping, so I am going to have to use either an Oscilloscope or a different precise CAN FD interface with hardware timestamping to complete my benchmarking. I have been using a PCAN-USB FD for basic testing, but I have read on this forum that for precise latency measurements a PCIe CAN interface would be better. I also understand that there are some FPGA CAN FD interfaces out there, I am not sure if these are preferred for this use-case or not.

Any help or feedback would be greatly appreciated. Thank you!

- Zach

[M.Maidhof]

Hello,

the timestamps of a PCAN-USB FD will also be generated on the hardware. So if you use the PCAN-USB FD as an external CAN sniffer, there are no disadvantages against a PCIe card

regards

Michael