Conducts research and provides scientific and technical services to aid Federal agencies in the selection, acquisition, application, and use of computer technology to improve effectiveness and economy in Government operations in accordance with Public Law 89-306 (40 U.S.C. 759), relevant Executive Orders, and other directives; carries out this mission by managing the Federal Information Processing Standards Program, developing Federal ADP standards guidelines, and managing Federal participation in ADP voluntary standardization activities; provides scientific and technological advisory' services and assistance to Federal agencies; and provides the technical foundation for computer-related policies of the Federal Government. The Institute consists of the following centers: Programming Science and Technology Computer Systems Engineering 77?^Institute for Materials Science and Engineering Conducts research and provides measurements, data, standards, reference materials, quantitative understanding and other technical information fundamental to the processing, structure, properties and performance of materials; addresses the scientific basis for new advanced materials technologies; plans research around crosscountry scientific themes such as nondestructive evaluation and phase diagram development; oversees Bureau-wide technical programs in nuclear reactor radiation research and nondestructive evaluation; and broadly disseminates generic technical information resulting from its programs. The Institute consists of the following Divisions: Inorganic Materials Fracture and Deformation" Polymers Metallurgy Reactor Radiation 'Headquarters and Laboraiories ac Gaiihersburg, MD, unless otherwise noted; mailing address Gaithersburg, MD 20899. 'Some divisions within the center are located at Boulder, CO 80303.
AbsiPoci'-A technique h described which utilizes a single generator and ft delay line for the roeasurement of frequency-domain ph»se noise i£if)) in synthesized signal generators. Terms are defined and equations developed for theory and calculations of normalized phase-noise sidehand power in a 1-Hz bandwidth offset 20 kHz from signal frequencies of interest. The system de^ribed covers the range from 0.45 to 2000 MHz. The fuE»ction and contributiun of each component in the measurement system is presented. Advantages of this method are dis* cuääed and a brief error analysis is given.
The purpose of this performance evaluation procedure is to provide recommended test methods for verifying conformance with typical performance criteria of power meters that are commercially available for use in the radiofrequency , microwave, and millimeter wave regions. These methods are not necessarily the sole means of measuring conformance with the suggested tyoical specifications, but they represent current procedures which use commercially available test equipment and which reflect the professional level and impartial viewpoint of the Institute of Standards and Technology (NIST) (formerly the National Bureau of Standards (NBS)).
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