Table of Contents

FOREWORD<br>Clause<br>1 General<br>&nbsp;&nbsp;&nbsp;1.1 Scope<br>&nbsp;&nbsp;&nbsp;1.2 Normative references<br>2 Preferred ratings and guidance on detail <br>&nbsp;&nbsp;&nbsp;specifications<br>&nbsp;&nbsp;&nbsp;2.1 Preferred ratings and characteristics<br>&nbsp;&nbsp;&nbsp;2.2 Information to be prescribed in detail <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;specifications (for both custom-built and <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;standard catalogue items)<br>3 Capability approval<br>&nbsp;&nbsp;&nbsp;3.1 Eligibility for capability approval<br>&nbsp;&nbsp;&nbsp;3.2 Structural similarity<br>&nbsp;&nbsp;&nbsp;3.3 Procedures for capability approval<br>&nbsp;&nbsp;&nbsp;3.4 Capability manual<br>&nbsp;&nbsp;&nbsp;3.5 Capability qualifying components (CQCs)<br>&nbsp;&nbsp;&nbsp;3.6 Inspection requirements for CQCs<br>&nbsp;&nbsp;&nbsp;3.7 Programme for capability approval<br>&nbsp;&nbsp;&nbsp;3.8 Capability approval report<br>&nbsp;&nbsp;&nbsp;3.9 Abstract of description of capability<br>&nbsp;&nbsp;&nbsp;3.10 Modifications likely to affect the capability<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;approval<br>&nbsp;&nbsp;&nbsp;3.11 Initial capability approval<br>&nbsp;&nbsp;&nbsp;3.12 Maintenance of capability approval<br>&nbsp;&nbsp;&nbsp;3.13 Rework and repair work<br>&nbsp;&nbsp;&nbsp;3.14 Quality conformance inspection<br>&nbsp;&nbsp;&nbsp;3.15 Screening procedures<br>4 Test and measurement procedures<br>ANNEXES<br>A Example layout of an abstract of description of <br>&nbsp;&nbsp;&nbsp;capability<br>B Layout of the front page of a CQC specification <br>&nbsp;&nbsp;&nbsp;for process control<br>C Layout of the front page of a CQC specification <br>&nbsp;&nbsp;&nbsp;to demonstrate a boundary or limit

Abstract

Applies to quartz crystal units manufactured as custom-built products or as standard catalogue items and whose quality is assessed on the basis of capability approval. Prescribes the preferred ratings and characteristics, with the appropriate tests and measuring methods contained in the generic specification IEC 1178-1 and gives general performance requirements to be used in detail specifications for quartz crystal units.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 49