Accession Number:

AD0434345

Title:

PRODUCTION ENGINEERING MEASURE CR-(XM-40)/U HIGH-PRECISION CRYSTAL UNITS.

Descriptive Note:

Final rept., 29 May 61-29 Nov 63,

Corporate Author:

BLILEY ELECTRIC CO ERIE PA

Personal Author(s):

Report Date:

1963-12-01

Pagination or Media Count:

134.0

Abstract:

The CR-XM-40U units have a frequency stability of better than 5 parts in 10 to the 10 per day aging, a frequency stability of better than 1 part in 10 to the 9th for a 1-db change in drive level, and a frequency stability of at least 1 part in 10 to the 7th for 30g, 11 millisecond chock. The nominal frequency is 2.5 megacycles tolerance on nominal is 1.5 cycles. The units use gold-plated quartz resonators, horizontally mounted in evacuated, T-11 size glass holders. The crystals are designed to operate on the fifth overtone mode, into a load capacitance of 50 pf. They are intended to operate at a constant temperature, in the region from 43 C to 57 C, as specified for each unit by the manufacturer. A brief review is presented of the project and includes a Process Manual which gives details of all processing operations, outlines the quality control plan which was used to monitor and control the production, and describes equipment and testing techniques. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE