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Information technology. Real-time locating systems (RTLS). Part 22. Direct Sequence Spread Spectrum (DSSS) 2,4 GHz air interface protocol: Transmitters operating with multiple spread codes and employing a QPSK data encoding and Walsh offset QPSK (WOQPSK) spreading scheme
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Audio, video and audiovisual systems. Interconnections and matching values. Part 5. Y/C connector for video systems. Electrical matching values and description of the connector
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Optical fibres. Part 1-44. Measurement methods and test procedures. Cut-off wavelength
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Oscillator tubes with anode dissipation above 25 W. Method of electric strength test
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Printed boards. Part 4-1. Rigid multilayer printed boards with interlayer connections. Sectional specification. Section 1. Capability Detail Specification. Performance levels A, B and C
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