STB PDF

Measurement of quartz crystal unit parameters - Standard method for the determination of the load resonance frequency Æ’L and the effective load capacitance CLeff using automatic network analyzer techniques and error correction. Original standard BS EN 60444-11-2010 in PDF full version. Additional info + preview on request

Document status: Active

Measurement of quartz crystal unit parameters - Measurement of activity and frequency dips of quartz crystal units. Original standard BS EN 60444-7-2004 in PDF full version. Additional info + preview on request

Document status: Active

Measurement of quartz crystal unit parameters - Test fixture for surface mounted quartz crystal units. Original standard BS EN 60444-8-2017 in PDF full version. Additional info + preview on request

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Measurement of quartz crystal unit parameters - Measurement of spurious resonances of piezoelectric crystal units. Original standard BS EN 60444-9-2007 in PDF full version. Additional info + preview on request

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Basic and safety principles for man-machine interface, marking and identification. Identification of conductors by colours or alphanumerics. Original standard BS EN 60446-2007 in PDF full version. Additional info + preview on request

Document status: Replaced by

Basic and safety principles for man-machine interface, marking and identification. Actuating principles. Original standard BS EN 60447-2004 in PDF full version. Additional info + preview on request

Document status: Active