SIST EN 2591-6415:2004

SIST EN 2591-6415:2004 is the Slovenian adoption of EN 2591-6415:2001, published by SIST for the aerospace sector. It specifies a test method for checking whether the alignment system in optical connection elements is damaged when a specified probe is inserted, and it is used together with EN 2591-100. Engineers, test laboratories, and quality teams use it to run the damage check in a repeatable way and to verify the related optical and mechanical measurements before and after the test.

What does SIST EN 2591-6415:2004 specify?

SIST EN 2591-6415:2004 specifies a laboratory method for verifying that the alignment system used in optical connection elements is not damaged by insertion of a specified test probe. The document is organized as a short test method with scope, normative references, specimen preparation, apparatus, method, and measurement checks.

Clause 1 sets the purpose of the test. Clause 2 links the method to companion EN 2591 parts, and Clause 3 describes how specimens are prepared so the test is representative of the intended product configuration. Clause 5 then gives the actual probe-damage procedure and the before-and-after checks.

What are the key requirements of SIST EN 2591-6415:2004?

The key requirements are the specimen setup, the probe-loading procedure, and the inspection and measurement checks that confirm whether damage has occurred.

• Clause 3.1: specimens, with half containing the alignment system, are tested with terminated contacts and standard accessories fitted. In practice, the test should reflect the product as it is normally assembled, not a stripped-down sample.
• Clause 3.2: unless the technical specification says otherwise, the test plan must specify the number of specimens, cable/fibre type and length, maximum insertion loss, and mating and unmating forces. This means the purchaser or product standard has to define the test conditions that matter for that product.
• Clause 4: the apparatus follows EN 2591-415 and EN 2591-601. In practice, the test rig and measurement equipment are not defined from scratch here, so users must bring in the companion methods.
• Clause 5.1: initial measurements are taken according to EN 2591-601 and EN 2591-408. This gives a baseline for optical loss and connection-force behavior before the probe-damage check.
• Clause 5.3: the test probe is fully inserted into the alignment system while the element is held horizontally, and a constant bending moment defined in the product standard is applied to the probe. The probe is then withdrawn to a depth of 2/3 of “A” and the sequence is repeated three times with the element rotated through 90° between tests. In practice, this checks whether the alignment system can tolerate probe insertion from different orientations.
• Clause 5.4: final measurements and visual examination are carried out, with particular attention to chipping or distortion of the alignment system, using EN 2591-6101, EN 2591-601, and EN 2591-408. This confirms whether the test caused mechanical damage or changed the optical/mechanical performance.

What terms does SIST EN 2591-6415:2004 define?

SIST EN 2591-6415:2004 uses several technical terms that shape how the test is run and judged.

• alignment system - the part of the optical connection element being checked for damage during probe insertion.
• test probe - the specified probe inserted into the alignment system to apply the damaging condition.
• optical connection elements - the components being tested for correct optical alignment and resistance to probe damage.
• insertion loss - the optical performance measure checked before and after the test to see whether the connection changed.
• mating and unmating forces - the forces needed to connect and disconnect the element, used as part of the before-and-after checks.
• terminated contacts - contacts fitted with terminations for the specimen preparation stated in Clause 3.
• constant bending moment - the load applied to the probe during the test, as defined by the product standard.

Who uses SIST EN 2591-6415:2004?

SIST EN 2591-6415:2004 is used by aerospace manufacturers, test laboratories, and quality engineers working with electrical and optical connection elements. It is relevant when they need to verify that a product’s alignment system survives probe insertion without damage and that the product still meets its optical and mechanical checks afterward. Buyers and specification writers also use it when they need a named test method to include in a product or procurement specification.

Which standards are used with SIST EN 2591-6415:2004?

SIST EN 2591-6415:2004 is used together with EN 2591-100, which provides the general framework for the EN 2591 test series. It also relies on EN 2591-408 for mating and unmating forces, EN 2591-415 for test-probe-damage related apparatus and specimen details, EN 2591-601 for insertion loss, and EN 2591-6101 for visual examination.

What does the SIST EN 2591-6415:2004 document contain?

SIST EN 2591-6415:2004 is a procedural test document rather than a broad design standard. It contains the scope, the related EN 2591 references, specimen preparation rules, apparatus cross-references, and the step-by-step probe insertion sequence.

The method includes an initial check, a horizontal probe-loading setup, repeated tests with the element rotated through 90°, and final measurements. The end check combines optical measurement, force-related checks, and visual inspection for chipping or distortion.