Optical amplifiers. Test methods - Power and gain parameters - Electrical spectrum analyzer method1 Scope This part of IEC 61290 applies to all commercially available optical amplifiers (OAs) and optically amplified sub systems. It applies to OAs using optically pumped fibres (OFAs based on either rare earth doped fibres or on the Raman effect), semiconductors (SOAs), and waveguides (POWAs). NOTE The applicability of the test methods described in the present standard to distributed Raman amplifiers is for further study. The object of this standard

BS EN 14153-1:2003 Recreational diving services

Emerging data broadcasting specifications allow a service provider to trigger an application in a TV receiver

The products are manufactured with or without facings or coatings

BS EN 754-4:2008 supersedes BS EN 754-4:1996

Non-porous oxidation coatings of the barrier layer type

Provision of the service

BS EN 61143-2 is an international standard that discusses the test methods of X-t recorders

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and gives rules for their designation

and on in which it is tested in a soaked condition

BS EN 17141 includes considerations for medical devices and food applications