Accession Number : AD0698190

Title :   R-390A/URR DIGITAL FREQUENCY READOUT UNIT.

Descriptive Note : Interim rept.,

Corporate Author : SYRACUSE UNIV RESEARCH CORP N Y DEFENSE SYSTEMS DIV

Personal Author(s) : Bicevskis,Imants ; Emeny,William

Report Date : JUL 1969

Pagination or Media Count : 56

Abstract : The design and development of the R-390A/URR Digital Frequency Readout Unit is presented. The history of development including the techniques considered are discussed. Digital pulse subtraction, which was chosen as the most economical technique, is described in detail. The new approach to frequency readout uses the existing local oscillators of the receiver and, by a pulse subtraction process, extracts the input frequency of the receiver with an accuracy of plus or minus 20 Hz. (Author)

Descriptors :   (*RADIO RECEIVERS, *FREQUENCY METERS), HIGH FREQUENCY, DIGITAL SYSTEMS, TUNING DEVICES, LOGIC CIRCUITS, FREQUENCY CONVERTERS, RELAXATION OSCILLATORS

Subject Categories : Test Facilities, Equipment and Methods
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE