In this section we will review and construct basic signals. For this tutorial, use the Y option when calling doing SSH. First you are going to want to resolve a space on SB3 before continuing on with the tutorial.
{{{
ssh -Y username@sb3.orbit-lab.org
}}}

Check that the nodes are powered ON:

{{{
omf stat -t all
}}}

If one or both of the nodes are in a powered off state turn them on with:

{{{
omf tell -a on -t all
}}}

Next to get the latest updated image with updated gnuradio libraries enter:

{{{
omf load -t all -i ubuntu-14-04-64bit-sdr-full.ndz
}}}

After calling the nodes will power down after imaging. Turn them back on and enter:

{{{
ssh -Y root@node1-1
}}}

*Note if this doesn't work the first time, the node might be recovering from imaging. Wait a few seconds and try again.

Enter on the command line:

{{{
gnuradio-companion &
}}}

From the available blocks construct the schematic displayed in:


[[Image(sawtoothbuild.png,500px)]][[BR]] this will allow you to view the signal and its frequency plot equivalent similar to the image below:

[[Image(sawtooth.png,500px)]][[BR]]