BS EN 62801. Measurement Method of a Half-Wavelength Voltage for Mach-Zehnder Optical Modulator in Wireless Communication and Broadcasting Systems has-tracked-changes BS 5942-7 provides an object

BS 5942-7 provides an object that is to give the minimum performance requirements and methods of measurement for loudspeakers and loudspeaker systems having regard to the above constraints

mechanical and physical characteristics

It also provides the requirements for the provision for earthing and demonstrates how to protect people and goods against electrical shock

BS EN 60079-35-2 details those performance and other safety features of caplights

BS EN 62801. Measurement Method of a Half-Wavelength Voltage for Mach-Zehnder Optical Modulator in Wireless Communication and Broadcasting Systems has-tracked-changes BS 5942-7 provides an object