BS ISO 20711:2017 pdf free.Optics and photonics一Environmental requirements一Test requirements for telescopic systems.
For the purposes of this document, the terms and definitions given in ISO 10109 and the following apply.
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extent of testing
sum of all required tests to ascertain operability, as well as product performance within the intended use and life span
Note ito entry: The extent of testing is subdivided into type (or sample) testing and series testing. [SOURCE: ISO 10109:2015, 2.3, modified.]
type testing sample testing extent of testing required of initial or qualification samples sufficient to ascertain whether the instrument complies with all the environmental requirements of the relevant specification
Note ito entry: Type (or sample) testing is designated by the code letter T.
series testing extent of testing required of ensure constant production quality
Note 1 to entry: Sampling procedures can be used.
Note 2 to entry: Series testing is designated by the code letter S.
Subdivision of the instrument group “telescopic systems”
The group telescopic systems is subdivided into instrument types with the type numbers given In Table 1.
The relevant specification and other technical documents shall indicate the environmental requirements applicable to this document using the above designation.
EXAMPLE Environmental requirement designation for telescopic systems, type number of the instrument type 02 and the extent of testingT:
Environmental requirements ISO 20711-02-T
In relevant specifications and other technical documentation, tests carried out in accordance with the environmental requirements given in this document shall be designated by the environmental test code as specified in Iso 9022-1,
Specification of technical requirements and appropriate environmental tests Acceleration of free fall
For the purposes of this document, the acceleration of free fall shall be taken asg = 9.81 rn/s2.
Binoculars, monoculars and spotting scopes (instrument types 01 and 02)
TahleZ specifies technical requirements and corresponding environmental tests for extent of testing T (type or sample test).
After testing in accordance with Table 2. the instrument shall meet the specifications of either Iso 14133•1 or ISO 14133-2.
Series tests (extent of testingS) shall be stipulated in the relevant specification. Table 3 shows a summary of the tests given in Table 2 as specified in ISO 9022.BS ISO 20711 pdf free download.
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