Changes

The signal generator provides the reference sinusoidal signals for the field generator emitter coils.

The waveform generator provides the reference sinusoidal signals for each emitter coil of the field generator. The generator comprises of a single Analog Devices [http://www.analog.com/media/en/technical-documentation/data-sheets/AD9833.pdf AD9833] programmable integrated circuit which provides a reference sinewave at a desired frequency. The IC is programmed over the SPI bus using a microcontroller.