• Time, Frequency Standard Counter HP Memory Project

    The picture below shows a panel view of a typical "atomic" clock configuration used in the Flying Clock experiment. The HP 5060A cesium standard in the middle drives HP 115BR electronic clock (top) which integrates standard frequency and also produces very accurate electrical "ticks" based on driving frequency.

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  • HP 5062C Leap Second

    The 5062C makes use of the passive atomic resonance effect in cesium. In order to excite this resonance a frequency equal to the resonant frequency of cesium (with the magnetic field used in the 5062C this frequency is 9,192,631, Hz) is applied to the microwave cavity of the cesium beam tube.. The excitation signal is obtained by multiplying the output of a quartz oscillator to the ...

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  • Cesium clocks Oscilloquartz

    Our cesium clocks achieve this and more. With our technology, network operators can rely on a frequency source that delivers even better than the required levels of accuracy during its whole lifetime. Our cesium units enhance overall network performance and prevent upstream clock errors from propagating across the entire network.

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  • The cesium frequency standard University of Ljubljana

    The cesium frequency standard Author: Jan Fi ser Advisor: assoc. prof. Igor Poberaj Ljubljana, June 2014 Abstract In the seminar the cesium atomic clock, which serves as the primary frequency standard used for the de nition of the second, is described. First, a brief history of time measurement and

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  • Primary Atomic Frequency Standards at NIST

    Standards Based on Magnet State Preparation and Detection. Figure 1 shows a schematic diagram of a conventional cesiumbeam frequency standard. The cesium oven, operated near 100 °C, creates a vapor of atoms that are collimated and passed successively through the statepreparation region (the A magnet in Fig. 1), the microwave cavity, and then the statedetection region (the B magnet and ...

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  • Cesium beam Frequency Standard Type 5061A Physics Museum ...

    Cesium beam Frequency Standard Type 5061A This item is a Cesium Atomic Clock, made by HewlettPackard, widely known today as HP, around 1970. The Cesium Atomic Clock is enclosed in a grey metal casing with an analog time display and three output frequencies.

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  • A Brief Notes To Time/Frequency Standards An Introduction

    The frequency of Cesium atom is used for the purpose of establishing Time standard. Cesium is one of the most stable frequency generators under laboratory conditions. International Bureau of Weights and Measures (BIPM), France computes the frequency using coordinated atomic (Cesium) clocks (about 250 of them), which in turn is used for the ...

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  • GPS12R/12RG Portable GPS/ Glonasscontrolled Frequency ...

    Accuracy, HighStability and Performance The GPS12R frequency standard offers traceable Cesiumlike stability at a very attractive price. Synchronized to the GPS satellite system, the GPS12R provides both short and long–term time and frequency stability, assuring precision and accuracy. Longterm frequency stability is provided from the builtin Cesiumcontrolled standards in the GPS ...

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  • A Cesium fountain frequency standard: Preliminary results ...

    article{osti_125719, title = {A Cesium fountain frequency standard: Preliminary results}, author = {Clairon, A and Laurent, P and Santarelli, G}, abstractNote = {Laser cooling of atoms has opened up new possibilities in the field of atomic frequency standards. A Cesium atomic fountain, first proposed by Zacharias in 1953, is now feasible: the atoms, first cooled by six laser beams, are ...

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  • Cesium Atomic Clock | National Museum of American History

    The 5071A Cesium Primary Frequency Standard was developed by HewlettPackard (HP) in the 1990’s. In 1999, an HP spinoff company, Agilent Technologies continued manufacturing the 5071A. In August 2005, Agilent sold the 5071A to Symmetricom, Inc., which then became the supplier. Finally, Microsemi Corporation acquired Symmetricom in October 2013.

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  • HP 5060A Cesium Beam Frequency Standard

    The standard was moved from the East coast to Colorado and was more a frequency standard than a clock. 1964 The HP 5060A, a cesiumbeam standard instrument, gains worldwide recognition as the "flying clock." International standards for time set by flying the HP 5060A around the world.

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  • Atomic Clocks Georgia State University

    Cesium Atomic Clock. The current time standard for the United States is a cesium atomic frequency standard at the National Institute of Standards and Technology in Boulder, Colorado. In 1967 a standard second was adopted based on the frequency of a transition in the Cs133 atom: 1 second = 9,192, 631,770 cycles of the standard Cs133 transition

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  • NISTF1 Cesium Fountain Atomic Clock | NIST

    The Cesium Tube, or Traveling Wave Tube, is the main component of Microsemi Cesium Primary Frequency Standard 5071A. Frequency Standards are used for time synchronization in telecommunication, satellite communication, and navigation systems. The cesium beam tube uses a signal to generate energy state changes in cesium atoms within the beam tube.

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  • CESIUM AND RUBIDIUM FREQUENCY STANDARDS STATUS …

    CESIUM AND RUBIDIUM FREQUENCY STANDARDS STATUS AND PERFORMANCE ON THE GPS PROGRAM M. J. Van Melle GPS NAVSTAR Operations Rockwell Spare and Operation Center Falcon Air Force Base Colorado Springs, CO Abstract This paper is an update of the onorbit operational performan~e oJ the frequency standards on the last Block I NAVSTAR satellite (GPSlo), the …

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  • 5071A | Microsemi

    Frequency accuracy to 5 x 1013 The intrinsic accuracy of the cesium beam tube assures that any 5071A Option 001 will power up to within 5 x 1013 of the accepted standard for frequency. This is achieved under full environmental conditions in 30 …

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  • Introduction to Quartz Frequency Standards Oscillator ...

    Commercially available frequency sources cover an accuracy range of several orders of magnitudefrom the simple XO to the cesiumbeam frequency standard. As the accuracy increases, so does the power requirement, size, and cost. Figure 34, for example, shows the relationship between accuracy and power requirement.

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  • Cesium Beam Atomic Time and Frequency Standards By

    Description of a long cesium beam frequency standard, Proceedings of the 14th Annual Symposium on Frequency Control (U. S. Army Signal Research and Development Laboratory, Ft. Monmouth, N. J.) 354 (1960). [51] McCoU:BltEY, A.: Missileborn Atomichron frequency standard, Proceedings of the 14th Annual Symposium

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  • Frequency standards, GPSsynchronized, standalone, and ...

    The GPS12R frequency standard offers traceable Cesiumlike stability at a very attractive price. Synchronized to the GPS satellite system, the GPS12R provides both short and long–term time and frequency stability, assuring precision and accuracy. We offer the following models:

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  • Cesium Clock and Frequency References | Microsemi

    5071A Cesium Frequency Standard. Frequency Accuracy up to ±5e13; Long term stability up 1e14; Up to 6 RF and 3PPS outputs; Up to 2 1PPS inputs; Battery backup and Time of Day; 10 year warranty on standard tubes; 5 year warranty on high performanc tubes; MTBF: >160,000 hours; Caesium Clock Cs4000 Cesium Frequency Standard. Frequency …

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