A new function set_valon() was added to cam.py that creates a new
socket object. The read and write functions of the socket object are
then set equivalent to recv and send to correspond to the serial
communication used in the NRAO ValonSynth code. The Synth A and B
of the Valon Synthesizer are set to the self.config['sample_clk']/1e6
which takes a MHz input and NOT Hz (hence the /1e6).