IEC 61753-031-2:2014 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 requirement of this IEC standard. The requirements cover balanced bidirectional non-connectorized single-mode 1 x N and 2 x N non wavelength-selective branching devices for use in an IEC Category C 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 x 2 and 2 x 2 devices because they are the most commonly used. Keywords: non-wavelength selective branching device (NWBD), IEC Category C environment<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3 Test <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 Test report 5 Performance requirements 5.1 Dimensions 5.2 Sample size 5.3 Test details and requirements <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Tables Table 1 \u2013 Test details and requirements <\/td>\n<\/tr>\n | ||||||
| 17<\/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 \u00d7 N and 2 \u00d7 N NWBDs \ncalculated by the equations of Tests No.1 and 2 Table A.1 \u2013 Attenuation and uniformity requirements of balanced bidirectional NWBD having the most common port configurations for Class A, with the underlying formulas as specified in the Tests 1 and 2 of Table 1 <\/td>\n<\/tr>\n | ||||||
| 18<\/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 Tests 1 and 2 of Table 1 Table A.3 \u2013 Attenuation requirements of 1 \u00d7 2 and 2 \u00d7 2 unbalanced NWBD having \nthe most common port configurations, with the underlying formula as specified in \nTest 1 of Table 1 <\/td>\n<\/tr>\n | ||||||
| 19<\/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 ofattenuation values for Class B balanced bidirectional NWBD <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex B (normative) Sample size Table B.1 \u2013 Sample size for each test <\/td>\n<\/tr>\n | ||||||
| 21<\/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 C. Controlled environment<\/b><\/p>\n |