Changes between Version 2 and Version 3 of Tutorials/k0SDR/Tutorial05


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Timestamp:
May 15, 2013, 3:36:37 PM (12 years ago)
Author:
nilanjan
Comment:

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  • Tutorials/k0SDR/Tutorial05

    v2 v3  
    77 1. 4 grid nodes with a USRP2 connect via Ethernet.
    88 2. ''ubuntu-12-04-uhd-daemon.ndz'': node image with all the precompiled software required to configure the USRPs.
    9  3. ''uhd.rb'' - OEDL script executed on the console. This script configures the USRPs for data collection at specified frequencies, sampling rate, etc...
     9 3. ''uhd_exp1.rb'' - OEDL script executed on the console. This script configures the USRPs for data collection at specified frequencies, sampling rate, etc...
    1010 4. ''uhd_daemon'' - a node background process that bridges the gap between OMF commands and USRP2.
    1111
    … …  
    4646}}}
    4747
    48  * Download the OEDL experiment script uhd.rb to your local directory on the console. Executing this script will tell the USRP2 record spectrum data for a few seconds at different carrier frequencies.
     48 * Download the OEDL experiment script [http://www.orbit-lab.org/raw-attachment/wiki/Tutorials/GNURadio/OmfExperiment1/uhd_exp1.rb uhd_exp1.rb] to your local directory on the console. Executing this script will tell the USRP2 record spectrum data for a few seconds at different carrier frequencies.
    4949   The contents of the uhd file is shown with additional comments:
    5050{{{
    51 nilanjan@console.grid:~/UHD$ cat uhd.rb
     51nilanjan@console.grid:~/UHD$ cat uhd_exp1.rb
    5252defProperty('rxfreq',  2400e6, "Starting rx frequency")
    5353defProperty('rxstep',  10e6, "Rx frequency increments")
    … …  
    5656
    5757
    58 defGroup('rxnode', 'node1-1.grid.orbit-lab.org,node1-2.grid.orbit-lab.org,node1-19.grid.orbit-lab.org,node1-20.grid.orbit-lab.org')
    59 
     58defGroup('rxnode', 'node1-1.grid.orbit-lab.org,node1-2.grid.orbit-lab.org,node1-19.grid.orbit-lab.org,node1-20.grid.orbit-lab.org')
    6059{ |n|
    6160}
    … …  
    6564  info "Give machines some time to warm up"
    6665  wait 4
    67 
    6866
    6967  allGroups.uhd.u0.activate                        # starts uhd_daemon
    … …  
    102100 * To run the experiment script:
    103101{{{
    104 nilanjan@console.grid:~/UHD$ omf exec uhd.rb
     102nilanjan@console.grid:~/UHD$ omf exec uhd_exp1.rb
    105103}}}
    106104