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Methods of verification
IEC 60335-1
bell pressure change technique
This standard also defines the classification systems for these instruments
Digital cinema (D-cinema) operations - Generic extra-theatre message format Ingestion-build-47786 Methods of verification1 Scope This standard presents a specification for a generic Extra Theatre Message (ETM) format for use with unidirectional communications channels used in security communcations for Digital Cinema (D Cinema) systems. The ETM specification is a generic XML security wrapper that includes specific fields which can be extended to carry different kinds of information to meet various application level requirements. (For example, the Key Delivery Message
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