Hi, I am using: OS: Ubuntu 11.10 (which I read in blog said that it has some problem with gnuradio) Gnuradio: 3.5.0 rc 0 (which I git from master branch)
I quite puzzled it's not working with my current setup. It seems doable by many people but not me. Regards, Muhammad b Rosli Student Bachelor of Electrical and Electronic University of Canterbury On Wed, Dec 7, 2011 at 12:14 PM, Tom Rondeau <trondeau1...@gmail.com> wrote: > On Thu, Dec 1, 2011 at 10:15 PM, Muhammad Rosli <muhd7ro...@gmail.com>wrote: > >> Hi, >> >> Thanks for your reply. I am using the narrowband example. >> >> If I attempt using >> >> ./benchmark_tx.py -f 400M -r 250k -S 4 >> >> and >> >> ./benchmark_rx.py -f 400M -r 250k -S 4 >> >> which I worked out from reading the README file, the receiver still >> output overrun (many '0'). I verified that the transmitter working since my >> spectrum analyser can pickup the signal from the transmitter. >> >> >> -- >> Regards, >> Muhammad b Rosli >> Student >> Bachelor of Electrical and Electronic >> University of Canterbury >> > > > What is your OS, version of GNU Radio, hardware? > > By default, the digital benchmarks run GMSK, so that with 250 kbps rate > should be easily doable without overruns on most modern machines. > > Tom > > > >> >> On Fri, Dec 2, 2011 at 3:56 PM, Marcus D. Leech <mle...@ripnet.com>wrote: >> >>> ** >>> On 12/01/2011 09:36 PM, Muhammad Rosli wrote: >>> >>> Hi, >>> >>> Thanks for reading my mail. I would like to ask is there any additional >>> setup or configuration required to execute benchmark_tx.py and >>> benchmark_rx.py? >>> >>> My problem is I tried to initiate simple communication between two USRP1 >>> using benchmark_rx.py and benchmark_tx.py . I had browse through the >>> mailing list looking on how to use the file appropriately. Running >>> benchmark_tx.py also execute help which I follow closely but failed to >>> receive any packets. If I tried to execute at transmitter: >>> >>> benchmark_tx.py -f 400M -S 10 >>> >>> and at receiver >>> >>> benchmark_rx.py -f 400M -S 10 >>> >>> I did not received packet status. I only received '0' in the terminal. >>> Is it correspond to error? >>> >>> I also read mailing list sent by other members but none mentioned about >>> not able to execute benchmark_tx.py . If I missed any post, could anyone >>> please provide me the link. >>> >>> For additional information: >>> Gnuradio version used: v3.5.0rc0 >>> USRP1 : revision 4 >>> Ubuntu: 11.10 >>> Daugtherboard: SBX >>> >>> Please let me know if I had to provide any additional information. >>> >>> -- >>> Regards, >>> Muhammad b Rosli >>> Student >>> Bachelor of Electrical and Electronic >>> University of Canterbury >>> >>> You're asking for 10 samples per symbol, which may exceed the rate at >>> which your receiver computer can keep up, depending on >>> the modulation used, and the complexity of the modulation techniques. >>> Are you using the narrowband or ofdm examples? >>> >>> The 'O' means overrun. The hardware (USRP1) is sending samples faster >>> than your computer can keep up. >>> >>> >>> >>> >>> -- >>> Marcus Leech >>> Principal Investigator >>> Shirleys Bay Radio Astronomy Consortiumhttp://www.sbrac.org >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >> >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > -- Regards, Muhammad b Rosli Student Bachelor of Electrical and Electronic University of Canterbury
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