IEC 61178-2:1993

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

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.