IEC 61753-031-6:2014(E) contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements of this standard. The requirements cover balanced bidirectional non-connectorized single-mode 1xN and 2xN non-wavelength-selective branching devices for use in an IEC category O environment (N is the number of branching ports), especially but not exclusively used for PON application. For balanced NWBD, two attenuation and uniformity performance classes are considered: – class A (premium class) which meets more restrictive requirements (i.e. for extended reach PON application) and – class B (standard class) for standard application (i.e. normal reach PON application). The requirements also cover unbalanced bidirectional non-connectorized single-mode non-wavelength-selective branching devices, however the specifications of unbalanced branching devices are limited to 1×2 and 2×2 devices because they are the most commonly used. This second edition of IEC 61753-031-6 cancels and replaces the first edition published in 2008 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – deletion of the Introduction; – an updated and extended scope to reflect an introduction of two attenuation and uniformity performance classes for balanced NWBD instead of branching device technologies on the market; – an updated list of normative references; – a more simplified introduction to the two types of spectral bands; – Clause 5, Performance requirements, has been updated and extended to reflect the introduction of two attenuation and uniformity performance classes for balanced NWBD; – simplified test items to exclude tests for damp heat (steady state) and impact for performance requirements; – Annex A has been changed to introduce the calculated and minimum requirements for attenuation and uniformity. Keywords: non-wavelength selective branching device (NWBD), IEC category O environment<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | NOTICE <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3 Test <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Test report 5 Performance requirements 5.1 Dimensions 5.2 Sample size, sequencing and grouping 5.3 Test details and requirements <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Tables Table 1 \u2013 Test details and requirements (1 of 7) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (normative) A and U requirements of 1 \u00d7 N and 2 \u00d7 N NWBDs A.1 Attenuation and uniformity requirements of 1\u00d7N and 2\u00d7N NWBDs \ncalculated by the equations of Tests No.1 and 2 Table A.1 \u2013 Attenuation and uniformity requirements of balanced bidirectional NWBD \nhaving the most common port configurations for Class A, with the underlying formulas \nas specified in the Tests 1 and 2 of Table 1 <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | A.2 Minimum requirements at room temperature of attenuation values for \nbalanced bidirectional 1 \u00d7 N and 2 \u00d7 N NWBD Table A.2 \u2013 Attenuation and uniformity requirements of balanced bidirectional NWBD having the most common port configurations for Class B, with the underlying formulas as specified in the Test 1 and 2 of Table 1 Table A.3 \u2013 Attenuation requirements of 1\u00d72 and 2\u00d72 unbalanced NWBD having the \nmost common port configurations, with the underlying formula as specified in \nTest 1 of Table 1 <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Table A.4 \u2013 Minimum requirements at room temperature of attenuation valuesfor Class A balanced bidirectional NWBD Table A.5 \u2013 Minimum requirements at room temperature of attenuation valuesfor Class A balanced bidirectional NWBD <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex B (normative) Sequencing and grouping of tests Table B.1 \u2013 Sample size for each test <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconnecting devices and passive components. Performance standard – Non-connectorized single-mode 1xN and 2xN non-wavelength-selective branching devices for Category O. Uncontrolled environment<\/b><\/p>\n |