BS/EN 62077-2016 pdf download.Fibre optic interconnecting devices and passive components Fibre optic circulators Generic specification.
— all applicable test details;
— all measurement values and observations;
– sufficiently detailed documentation to provide traceable information for failure analysis.
4.2.6 Instructions for use
Instructions for use, when required, shall be given by the manufacturer and shall include:
— assembly and connection instructions:
— cleaning method;
— safety aspects;
— additional information, as necessary.
4.3 StandardizatIon system
4.3.1 Interface standards
Interface standards provide both manufacturer and user with all the information required to make or use the product in conformity with the physical features of that standard interface. Interface standards fully define the features essential for the mating and unmating of optical fibre connectors and other components They also serve to position the optical datum target. where defined, relative to other reference datum.
Interface standards ensure that connectors and adapters that comply with the standard will fit together. The standards may also contain tolerance grades for ferrules and alignment devices. Tolerance grades are used to provide different levels of alignment precision.
The interface dimensions may also be used to design other components that will mate with the connectors. For example, an active device mount can be designed using the adapter interface dimensions. The use of these dimensions combined with those of a standard plug provides the designer with assurance that the standard plugs will fit into the optical device mount. They also provide the location of the plug’s optical datum target.
Standard interface dimensions do not, by themselves, guarantee optical performance. They guarantee connector mating at a specified fit. Optical performance is currently guaranteed via the manufacturing specification. Products from the same or different manufacturing specifications using the same standard interface will always fit together Guaranteed performance can be given by any single manufacturer only for product delivered to the same manufacturing specification. However, it can be reasonably expected that some level of performance will be obtained by mating a product from different manufacturing specifications. although the level of performance cannot be expected to be any better than that of the lowest specified performance.
4.3.2 Performance standards
Performance standards contain a series of tests and measurements (which may or may not be grouped into a specified schedule depending on the requirements of that standard) with clearly defined conditions, seventies, and pass/fail criteria. The tests are intended to be run on a one-oW basis to prove the ability of a given product to satisfy the performance standards requirement. Each performance standard has a different set of tests and/or seventies (and/or groupings) that represents the requirements of a market sector, user group or system location.
A product that has been shown to meet all the requirements of a performance standard can be declared as complying with a performance standard but should then be controlled by a quality assurance/quality conformance programme.
It is possible to define a key point of the test and measurements standards when these are applied (particularly with regard to insertion loss and return loss) in conjunction with the interface standards of inter-product compatibility. This ensures conformance of each individual product to this standard.
4.3.3 ReliabilIty standards
Reliability standards are intended to ensure that a component can meet performance specifications under stated conditions for a stated time period.
For each type of component, the following shall be identified (and appear In the standard):
• failure modes (observable general mechanical or optical effects of failure),
• failure mechanisms (general causes of failure, which may be common to several components):
• failure effects (detailed causes of failure, specific to component).
These are all related to environmental and material aspects.
Initially, just after component manufacture, there is an infant mortality phase” during which many components would fail if they were deployed in the field. To avoid early field failure, all components may be subjected to screen process in the factory, involving environmental stresses that may be mechanical, thermal and humidity-related. This is to induce known failure mechanisms in a controlled environmental situation to occur earlier than would normally be seen in the unscreened population. For those components that survive (and are then sold), there is a reduced failure rate since these mechanisms have been eliminated.BS/EN 62077-2016 pdf download.
BS/EN 62077-2016 pdf download
PS:Thank you for your support!
