Cesium-Beam Servo System Using Square-Wave Frequency Modulation
- 1 February 1971
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. IM-20 (1) , 28-32
- https://doi.org/10.1109/TIM.1971.5570736
Abstract
This paper describes a new modulation and servo system that is being tested in the NRC long-beam cesium-frequency standard. Square-wave frequency modulation is employed; it is introduced by switching between two separately generated frequencies. The synthesizer producing these frequencies and the problems caused by switching transients are described. Since in a laboratory standard systematic errors play a very important role these errors are discussed in the description of the servo system. The resulting systematic error as calculated from results of experiments on its components is less than 1 part in 1013.Keywords
This publication has 4 references indexed in Scilit:
- A Systems Analysis of the Cesium Beam Atomic ClockIEEE Transactions on Instrumentation and Measurement, 1968
- Long Time Constant Servo System for Cesium Beam Frequency StandardPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1965
- Frequency-Impulse Modulation as a Means of Attaining Accuracy in Cesium Atomic ClocksIEEE Transactions on Instrumentation and Measurement, 1964
- Some Causes of Resonant Frequency Shifts in Atomic Beam Machines. I. Shifts Due to Other Frequencies of ExcitationJournal of Applied Physics, 1963