A new function set_valon() has been added to the cam.py in ratty2.
A socket object is created and the read and write functions are set to
be the same as recv and send. The valon_synth.Synthesizer() is then
provided with this new socket object. Both Synth A and B of the Valon
is then set to the self.config['sample_clk']/1e6. Important that the valon_synth
receives frequency in MHz and NOT Hz - therefore the /1e6.