how to measure the BER under labwin/CVI

[辉]

goodmorning,

i am using the PXI-8430\8431(rs232\rs485\rs422).

now i have a question:

i am thinking on how to measure the BER(bit error rate) across an ethernet communications link with PXI-8430\8431.

i need an example under labwin/CVI for measure the BER

anyone could offer the example or give me any help

l appreciate it

waiting........

thank you

hui

[Collin M]

Are you using an external BER tester you need to communicate with or do you want to do this in software?

I have done this in software before. Depending on the driver/OS you are using it may be easy to find the necessary information. I did this on VxWorks and that OS keeps track of things like total packets sent, packets with bad CRCs, discarded packets, and so on.

Also, most Intel ethernet chips have internal hardware counters that keep track of packets sent and other statistical data.

Can you describe the hardware and software/OS being used?

[辉]

thank you for your reply

i am not using an external BER tester

i have not the hardware

i must do it in software

i'll use the PXI-8431 and we redo the board

we add a timer on it.so far, i havenot the driver of the board

i think i can measure the BER at the PXI-8431 board driver i rewrite

thank you

hui