Re: [Discuss-gnuradio] Communication TEST

[Eric Blossom]

On Fri, Oct 20, 2006 at 10:55:46AM +0200, Roberto Mastrodonato wrote:
> My daugtherboard is a flex2400. To test its goodness I launch:
> 
> ./benchmark_tx.py -f 2412000000.0 -v and I get
> 
> >>>gr_fir_fff: using 3DNow!
> bits per symbol = 1
> Gaussian filter bt = 0.35
> Using TX d'board A: Flex 2400 Tx
> Tx amplitude     12000
> modulation:      gmsk_mod
> bitrate:         500kb/s
> samples/symbol:    2
> interp:          128
> Tx Frequency:    2.412G
> ..............
> 
> and
> 
> ./benchmark_rx.py -f 2412000000.0 -v and I get
> 
> >>>gr_fir_fff: using 3DNow!
> bits per symbol = 1
> M&M clock recovery omega = 2.000000
> M&M clock recovery gain mu = 0.050000
> M&M clock recovery mu = 0.500000
> M&M clock recovery omega rel. limit = 0.005000
> frequency error = 0.000000
> Using RX d'board A: Flex 2400 Rx
> Rx gain:         45
> modulation:      gmsk_demod
> bitrate:         500kb/s
> samples/symbol:    2
> decim:            64
> Rx Frequency:    2.412G
> 
> Besides, if I launch ./usrp_oscope.py -f 2.4G I get
> 
> ** (python:4994): WARNING **: IPP request failed with status 1030
> 
> ** (python:4994): WARNING **: IPP request failed with status 1030
> uO
> 
> with a windows showing the oscilloscope.
> 
> My question is: why if I launch ./benchmark_tx.py -f 2412000000.0 -v on a tx
> machine and /benchmark_rx.py -f 2412000000.0 -v on a rx machine, the rx one
> is not receiving anything? No packets!
> And if I launch /usrp_oscope.py -f 2.4G on the rx machine and then I
> generate 802.11b traffic at 1 Mbit, why am I not seeing any signal intensity
> variation on the oscilloscope?
> In the end, am I needed to pre-install particoular flex2400 firmwares before
> starting examples or those firmwares are directly loaded when I launch the
> examples?
> Is it possible to get a clear description (scripts I mean) about creating
> communications between USRPs standing on different machines?
> 
> 10x a lot
> 
> Roberto


Have you read the README in gnuradio-examples/python/digital?

Eric