Evaluation of an alternatively designed digital phase angle standard

A phase reference source, that uses a direct digital frequency synthesizer as a digital sine sample generator was designed and a prototype was built. The paper explains how the experimental verification of the findings that were previously obtained via theoretical analysis and computer simulations was performed on the prototype. The output phase angle deviations are under investigation, especially the circumstances at which they occur. Some preliminary measurement results are presented that confirm the previously gained knowledge regarding the dependencies of the phase modulation intensity