Systematic errors in cesium beam frequency standards introduced by digital control of the microwave excitation
W.D. Lee, J.H. Shirley, Fred L. Walls, Robert E. Drullinger · 2002
As part of the accuracy evaluation of the NIST-7 primary frequency standard, we have investigated potential sources of frequency offsets due to the electronic servo system. We present results from investigations of RF spectral purity and synthesizer switching transients.