IEC 61300-2-44:2024
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices and components
- Standard No.
- IEC 61300-2-44:2024
- Release Date
- 2024
- Published By
- International Electrotechnical Commission (IEC) IX / IEC
- Latest
- IEC 61300-2-44:2024
- Introduction
Standard Overview and Technological Evolution
IEC 61300-2-44:2024, a key component of the basic test procedures for fiber optic interconnects and passive components, specifically establishes standardized methods for testing the bending performance of strain relief structures in fiber optic components. This fourth edition of the standard represents a significant technical revision compared to the third edition, published in 2013, primarily in the form of innovative test monitoring methods and standardized severity levels.
Core Test Principles and Equipment Configuration
The core of this standard is to simulate the bending stresses experienced by fiber optic connectors and components during actual use. During testing, the device under test (DUT) is rotated ±90° within the cable plane about an axis perpendicular to the cable axis while applying a tensile load without torque. This motion pattern realistically replicates the mechanical stresses encountered in field use.
Equipment components Technical requirements Compliance with standards Optical light source Stable output characteristics IEC 61300-3-28 Detector High sensitivity detection IEC 61300-3-28 Mounting fixture Rigid fixation without deformation Custom design requirements Tensile load device Precise force control IEC 61753 Series Detailed Explanation of Key Steps in the Test Procedure
The test procedure consists of seven key phases: DUT preparation, preconditioning, installation, initial optical performance measurement, conditioning, recovery, and final measurement. Each phase has clear technical requirements and precautions.
The conditioning phase is the core of the test, requiring the application of a specified tensile load and a specified number of bending cycles. The standard specifies that the cable length from the bending point to the load application point should be 25cm ± 5cm, and a complete bending cycle includes four movements: 0° to +90°, +90° to 0°, 0° to -90°, and -90° to 0°.
Guide to Severity Level Selection
One of the major technical revisions to this standard is the standardization of severity levels, which are now uniformly categorized according to the performance categories in IEC 61753-1. Different categories of devices require different test parameter combinations.
Performance Category Component Type Tensile Force (N) Number of Cycles C, CHD Connectors and Passive Components - Reinforced Cables 2 50 OP, OP+, OPHD, OP+HD Connectors and Passive Components - Reinforced Cables 5 50 E Connectors - Reinforced Cables 5 100 E Passive Components - Reinforced Cables 5 30 In-depth Analysis of Technical Changes
The main technical changes in the fourth edition of the standard include two aspects: first, active monitoring is replaced by transient loss measurement, and second, the recommended severity levels are unified according to IEC 61753-1. The introduction of transient loss monitoring enables real-time capture of transient changes in optical performance during testing, which is crucial for evaluating the performance stability of fiber optic components under dynamic stress conditions. This monitoring method can detect brief performance degradation that traditional methods might miss, improving test sensitivity and accuracy. When performing tests according to this standard, special attention should be paid to the following key points: First, ensure the calibration and verification of the test equipment, particularly the accuracy of the tensile load and the rotation angle. Second, strictly follow the manufacturer's instructions for DUT preparation and cleaning to avoid introducing additional variables. Third, carefully record test condition parameters, including the direction of connector rotation about the longitudinal axis. For non-circular cables (such as ribbon and twinax cables), special attention should be paid to ensuring that the load is not doubled and that rotation is performed parallel to the cable's short width. When asymmetric connectors are mated to round cables, testing in both rotational directions is required to ensure a comprehensive evaluation.
Test Report Requirements and Data Recording
The standard specifies the detailed information that must be included in the test report, including DUT characteristics, usage methods, severity levels, initial test measurements, test measurements during testing, and final test measurements. Complete recording of this data is crucial for the traceability and comparability of test results.
Of particular note, any deviation from this test procedure must be clearly stated in the report, including the content of the deviation, the reason, and an assessment of the possible impact on the test results. This transparent recording requirement ensures the reliability and impartiality of the test results.
IEC 61300-2-44:2024 Referenced Document
- IEC 61300-1 Fibre optic interconnecting - Devices and passive components - Basic test and measurement procedures - Part 1: General and guidance*， 2025-12-01 Update
- IEC 61300-3-1 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-1: Examinations and measurements - Visual examination
IEC 61300-2-44:2024 history
- 2024 IEC 61300-2-44:2024 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices and components
- 2013 IEC 61300-2-44:2013 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices
- 2008 IEC 61300-2-44:2008 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices
- 2004 IEC 61300-2-44:2004 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices
