Accession Number:

AD0270649

Title:

PRODUCTION ENGINEERING MEASURE QUARTZ CRYSTAL UNITS CR-(XM-40)/U (2.5 MC HIGH PRECISION)

Descriptive Note:

Corporate Author:

BLILEY ELECTRIC CO ERIE PA

Report Date:

1961-11-30

Pagination or Media Count:

1.0

Abstract:

Work was continued on designs and techniques for the production and testing of CR-XM-40U quartz crystal units. The CR-XM-40U are very high precision, high stability units at 2.5 mc. These units are intended to serve in primary frequency standards and similar applications where the maximum stability is demanded. Fabrication and preliminary evaluation was completed for engineering sample units, including a few made from cultured quartz. Final check-out of the evaluation equipment was also done. The difficulties encountered in producing sample units were cleared up. Sample units appear to be superior to the ability to test them, with most of the apparent failures traceable to improper test techniques or to equipment malfunctions. Problems in connection with temperature control still exist, but a revised oven design and a special oil bath are expected to solve these problems. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE