Accession Number : AD0703841

Title :   PRECISION MEASUREMENT OF THE FREQUENCY AGING OF QUARTZ CRYSTAL UNITS.

Descriptive Note : Research and development technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Bernstein,Marvin

Report Date : JAN 1970

Pagination or Media Count : 25

Abstract : A system to determine the aging rate (frequency change with time) of quartz crystal units of the type used in single-sideband ratio sets is described. These quartz crystal units have an aging rate of the order of 10 to the minus 8th power/week. The temperature stability of ovens and frequency stability of test oscillator circuits are discussed. Performance data of several kinds of quartz crystal units are included. The control of power line voltage and room temperature is shown to be necessary for reliable measurements with a precision of 1 x 10 to the minus 9th power. (Author)

Descriptors :   (*QUARTZ RESONATORS, RELIABILITY(ELECTRONICS)), AGING(MATERIALS), FREQUENCY SHIFT, MEASUREMENT

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE