IEC 61300-3-22:2010 pdf free download

IEC 61300-3-22:2010 pdf free download

IEC 61300-3-22:2010 pdf free download Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-22: Examinations and measurements – Ferrule compression force
1 Scope
This part of lEC 61300 describes the procedure to measure the spring-loaded force applied toa ferrule when the plugs mate with each other during normal service. This measurementprocedure is applicable to a connector plug which has a spring-loaded ferrule.
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 61754 (all parts),Fibre optic interconnecting devices and passive components – Fibreoptic connector’interfaces
The device under test (DUT) is clamped and the ferrule compression force is measured whenthe ferrule end face is moved to a specified position.
3.2Fixed clamping device
A fixed clamping device capable of gripping the device under test without altering any of itsmechanical properties except for the position of the ferrule end face with respect to theconnector mechanical reference.
3.3 Force generator
A force generator capable of smoothly applying the compressive force to the ferrule end faceat the specified rate.
An example of suitable apparatus for this measurement is a compression tester. Theapparatus is shown in Figure 1.
3.4Position sensor
A suitable instrument for measuring the position of the ferrule end face when the compressiveforce is applied.
3.5 Force gauge
A suitable instrument for measuring the compressive force as applied to the ferrule end face.
The device under test shall consist of a fully assembled optical component prepared inaccordance with the manufacturer’s instructions.Unless otherwise specified, the device undertest shall be subjected to the following measurement procedure in a non-operational model.
The procedure shall be carried out as follows.
a) Securely fix the device under test to the fixed clamping device.
b) Smoothly apply the axial compressive load to the ferrule at 5 mm/min until the ferrule endface is moved to the specified position.
c) Measure the spring force when the ferrule end face is moved to the position as specified
in the relevant mechanical interface document (IEC 61754 series). Figure 2 shows anexample of ferrule compression force data in the case of a compression tester used as theapparatus.
5 Details to be specified
The following details, as applicable, shall be specified in the detail specification:
a) performance requirements as specified in the IEC 61 754 series;
b) the position of the ferrule end face relative to mechanical reference plane of the connector, where ferrule compression force is measured; for example for LSH connectors (IEC 61 754-1 5), the compression force shall be measured both when dimension M is compressed to 1 1 ,9 mm and to 1 2 mm;
c) spring force requirements at ferrule end face position as specified in item b) of this clause;
d) deviations from the test procedure;
e) the type of cable, buffered fibre or primary coated fibre fitted to the connector.