INDUSTRIAL PREPAREDNESS MEASURE ON TYPE CR-(XM-27)/U CRYSTAL UNITS
Abstract
Research was continued on CR-(XM-27)/U crystal production. Two sets of Preproduction Samples were subjected to preproduction tests. The first set failed these te ts. In the second set of 30 preproduction sample crystal units, 10 crystal units at an operating frequency of 61mc were approved; because of test failures at 10mc and 30mc - primarily temperature test failures and cracked bead defects in the crystal bases - these frequencies were not approved. Additional prepro uction samples, consisting of 10 crystal units each at frequencies 10mc and 30mc, were resubmitted for temperature run tests and cracked bead inspection. Since high frequency vibration and high shock test results on all 30 preproduc ion samples were satisfactory, these tests will not b repeated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1960
- Accession Number
- AD0259809
Entities
People
- C.c. Spreckels