[Discuss-gnuradio] Re: benchmark example on USRP2

[CNS Lee]

Hi,

Sorry, I made a mistake in my last email. What I'm using is GNU radio
3.2 Rev.11441.
Accoding to the email from Matt, I believe I get some sort of SW problem.

Can anybody give me some suggestion or even a hint?

Best re

On Tue, Aug 25, 2009 at 11:54 PM, CNS Lee<address@hidden> wrote:
> Hi everyone,
>
> I'm trying to establish communication between two USRP2 using
> benchmark example. The command "./benchmark_tx.py -f 2.4G -r 500k"
> doesn't work: USRP2 can not correctly decode the packets received, all
> packets are 'false'. (PS:Same command works well on USRP1)
> After many times' tests, the following magic combination are able to
> show better results.
>  ---------
>  #./benchmark_tx.py -f 2.4G -r 500k -s 98 -i 14 -discontinuous
>  #./benchmark_rx.py -f 2.4G -r 500k -d 14
>  ---------
> Test Result:
> Received packet rate: 98%
> Received OK packet rate: 97%
> I'm wondering why I could not receive 100% correct packets?
>
> The test environment: Ubuntu 9.04, GNU Radio 3.2.1, the SD card is
> updated with latest version of firmware images
> (http://gnuradio.org/releases/usrp2-bin/trunk/).USRP2 is bought the
> end of 2008 with daughterboard XCVR2450.
>
> I would appreciate if somebody can tell me what is problem of my test.
>
> Regards,
>
> Lee
>