Re: [Discuss-gnuradio] band pass filter

[Marcus Müller]

Nevertheless, using a "throttle" block with 400e6 samples/second seems
to be inadequate. The throttle rate (which has nothing to do with the
sampling rate) should be reduced to something the average computer can
deal with when visualizing. Maheshkumar, use something like 100k for the
beginning.

On Thu, 2013-10-31 at 14:38 +0000, Marcus Leech wrote:
> Oh, nevermind.  I missed the "simulation" part.
> 
> 
>  
> on Oct 31, 2013, Marcus Leech <address@hidden> wrote:
>         What SDR is being used that samples at 400e6 SPS, and what
>         *computer* is being used that can keep up?  Inquiring minds
>         want to know...
>         
>         
>          
>         on Oct 31, 2013, Mike Jameson <address@hidden> wrote:
>                 
>                 Hi Maheshkumar,
>                 
>                 
>                 For your example using a sample rate of 400e6, the low
>                 and high cutoff frequencies need to be between -200e6
>                 and 200e6, not 800+ as you currently have them
>                 configured.
>                 Try 10e6 for low cutoff and 20e6 for high cutoff.
>                  
>                 Regards,
>                 
>                 
>                 Mike
>                 
>                 --
>                 Mike Jameson M0MIK BSc MIET
>                 Ettus Research Technical Support
>                 Email: address@hidden
>                 Web: http://www.ettus.com
>                 
>                 
>                 On Thu, Oct 31, 2013 at 10:54 AM, Maheshkumar Pandit
>                 <address@hidden> wrote:
>                         hello every one .. 
>                          
>                          
>                                        i implement the following
>                         spectrum  generation stimulation but band pass
>                         parameter show error . 
>                         
>                           File
>                         "/home/mahesh/Documents/3110/1/top_block.py",
>                         line 128, in __init__
>                             1, samp_rate, 830000000, 840000000, 10000,
>                         firdes.WIN_HAMMING, 6.76))
>                           File
>                         
> "/usr/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_core_general.py", line 
> 9544, in band_pass
>                             return
>                         _gnuradio_core_general.firdes_band_pass(*args,
>                         **kwargs)
>                         RuntimeError: gr_firdes check failed: 0 < fa
>                         <= sampling_freq / 2
>                         
>                         
>                         guude me if any buddy face sane problem
>                         -- 
>                         Thanks and regard:
>                          
>                         MR.Maheshkumar Pandit
>                         
>                         call @ 9662784649
>                         
>                         
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