Current condition
Record a sample identifier, assembly variant, joint feature, reference decision and the person or team responsible for that decision. Note sample condition and any uncertainty or disagreement before using it as a reference.
Industrial machine vision
Good, Bad and Marginal Sample Range: Optics and lighting selection
What decisions about good, bad and marginal sample range materially change the system concept for solder joint inspection?
Build the solder-joint sample set around the visible features and decisions approved by the electronics quality team. Label accepted, rejected and marginal examples, include normal variation and keep every sample linked to its reference decision and assembly variant.
Use the set to assess viewing access, lighting, presentation and timing, while recording features that remain hidden or unclear. The challenge-test guide separates sample coverage from the final acceptance decision.
On the production floor
Turn your production information into clearer decisions — Solder Joint Inspection
Plan solder joint inspection around representative good, bad and marginal samples, line presentation, lighting, reject handling and challenge criteria. Discuss an optical feasibility trial with Oxford Vision Systems. Use this guide to resolve good, bad and marginal sample range before it limits the final system.
Discuss your application
What to record
Good, Bad and Marginal Sample Range: condition, range and effect on your process
Realistic range
Include accepted appearance variation as well as the rejected and marginal cases within the proposed duty. Cover representative variants, presentation and component shadows; do not rely only on obvious defects or hand-selected ideal assemblies.
Effect on the system
Record whether each sample's relevant feature is visible under the tested setup and whether the recorded result agrees with its reference decision. Preserve obscured, inconclusive and untested cases as limitations rather than counting them as demonstrated coverage.
Before you contact us
Five questions about good, bad and marginal sample range for your application
- Who can confirm this information?Identify the person responsible for good, bad and marginal sample range in production, quality, engineering or operations.
- How representative is the sample?Include age, supplier, batch, environment and upstream process state where they affect solder joint inspection.
- What is the difficult condition?Include the slow, reflective, flexible, dirty, damaged, marginal or uncommon case that your system must still handle.
- How will you judge the result?Agree the method, repetitions, acceptable range, result record and the response if the observed result falls outside the agreed range.
- What else must be coordinated?Your final solder joint inspection scope must also account for recipe, reject and line-control interfaces, false-accept, false-reject and challenge criteria, current regulations and the conditions at your site.
Connected details
Review good, bad and marginal sample range as part of the complete system
Visible Defect or Measurement Definition for Visible Solder-Joint Inspection
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for visible defect or measurement definition for visible solder-joint inspection. That lets us compare options against your real production rather than one nominal value.
Good, Bad and Marginal Sample Range
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for good, bad and marginal sample range. That lets us compare options against your real production rather than one nominal value.
Part Presentation and Production Speed
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for part presentation and production speed. That lets us compare options against your real production rather than one nominal value.
Optics, Lighting and Environmental Conditions
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for optics, lighting and environmental conditions. That lets us compare options against your real production rather than one nominal value.
Recipe, Reject and Line-Control Interfaces
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for recipe, reject and line-control interfaces. That lets us compare options against your real production rather than one nominal value.
False-Accept, False-Reject and Challenge Criteria
For Good, Bad and Marginal Sample Range: Optics and lighting selection, describe the current position, required outcome, acceptable limits and known exceptions for false-accept, false-reject and challenge criteria. That lets us compare options against your real production rather than one nominal value.