Overview
IEC 61300-2-9:2017 specifies a standardized shock test method for fibre optic interconnecting devices and passive components. The standard defines how to expose a device under test (DUT) to repetitive or non‑repetitive mechanical shocks-simulating infrequent shocks encountered in normal service or during transportation-to reveal mechanical weakness or degradation. This third edition is a technical revision that adds terms and definitions, more precise apparatus descriptions, a testing sub‑clause in the procedure, and a bibliography.
Key topics and technical requirements
- Test objective: Reveal mechanical weakness/degradation of fibre‑optic devices under shock loading representative of transport or service environments.
- Pulse shape: Tests use half‑sinusoidal shock pulses measured at defined check points; pulse tolerances and monitoring intervals are specified.
- Shock directions and counts: DUTs are subjected to two or three shock pulses in each direction of three mutually perpendicular axes.
- Apparatus: Acceptable shock machines include free‑fall, resilient‑rebound, nonresilient, hydraulic, compressed‑gas or equivalent systems. Machines must produce calibrated accelerations and the specified half‑sine excitation at checkpoints.
- Repetition rate: Selected so relative motion within the DUT between shocks is substantially zero and measured acceleration meets pulse tolerances.
- Velocity change: Actual velocity change must be within ±15% of the nominal value. When integrated from acceleration, the integration window is from 0.4 D before the pulse to 0.1 D after the pulse (D = nominal pulse duration).
- Cross‑axis motion: The standard limits unintended acceleration perpendicular to the intended shock direction (see clause 5.1.4 for tolerance requirements).
- Procedure steps: Preparation of DUT, pre‑conditioning, initial examinations and measurements, testing, recovery, and final examinations (visual and optical-transient loss and power measurements).
- Shock severity: Defined as the combined effect of peak acceleration, pulse duration, and number of shocks.
Applications and who uses it
- Manufacturers of fibre optic connectors, adapters, pigtails, splice closures, and passive modules for product qualification and design validation.
- Test laboratories and OEM QA teams performing standardized shock testing for compliance and reliability assessment.
- Systems integrators and transport engineers assessing packaging and handling robustness for fibre‑optic assemblies.
- Practical benefits: predictable, repeatable shock testing; improved product reliability in shipment and field use; basis for product specifications and acceptance criteria.
Related standards
Keywords: IEC 61300-2-9, shock test, fibre optic, passive components, half-sine pulse, DUT, shock machine, transport simulation, qualification.