Required definition
Procedure revision, DUT connection, sequence, limits, expected response, safety notes and pass or fail logic.
Finished-Unit Verification
Functional Testing for Box Build Assembly
Execute approved power-up, I/O and product-function checks with defined limits and result records.
- Customer-approved criteria
- Unit-linked results
- Controlled failure workflow
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What System-Level Functional Testing Confirms
System-level testing checks the behavior of the assembled unit after its mechanical, electrical and configuration inputs come together. Depending on the approved procedure, this can include power state, boot behavior, indicators, controls, I/O, communication or another customer-defined function. The purpose is to verify the agreed finished-product state, not to imply the same test coverage for every project.
Test Inputs and Acceptance Criteria
A repeatable test needs an approved procedure, clear connection method, defined power and environmental conditions, explicit limits, expected outputs and a named acceptance authority. If a golden unit or reference sample is used, its purpose, revision, storage and replacement rules should also be agreed.
Required ownership
Test software, fixture, approved reference, data format, exception authority and change approval.
Power-Up, Boot and I/O Checks
Test categories are selected for the product rather than copied from a generic list. A project may require controlled power-up, boot-state confirmation, indicator or control checks, selected I/O stimulation, communication response, sensor input or output activation. Each category is performed only when the procedure, limits and safe test arrangement are available.
Fixtures, Access and Repeatability
DUT access, mating cables, fixture ownership, test software and any maintenance or calibration requirement are reviewed as part of scope. The NPI build is used to confirm that the test interface is accessible after assembly and that the sequence does not depend on undocumented operator judgment.
Validate test readiness during NPI
Use pilot units to review connections, expected outputs, data capture, failure states and the release decision before repeat production.
Unit Identity and Result Records
The agreed result record can connect a serial or other unit identity with test revision, firmware or configuration state, execution time, result and exception status. Data fields, retention and delivery format are set by the project. We do not invent measurements or present a sample record as customer evidence.
See how testing connects with firmware configuration and traceability.
Failures, Rework and Retest
What to Send for Test Review
Send the current test procedure, I/O map, expected limits, interface definition, fixture and software information, sample data format, product and firmware revisions, failure workflow and approval contacts. Incomplete material can still be reviewed, but open items must be resolved before a reliable quotation and release plan can be established.
Functional Testing FAQs
Who supplies the functional test procedure?
The customer normally supplies or approves the finished-unit procedure, limits and acceptance criteria. We confirm execution requirements during scope review.
Can customer-owned fixtures be used?
They can be considered when interface, ownership, shipping, maintenance, calibration status and support responsibilities are defined for the project.
What result data can be delivered?
The output can include agreed unit identity, procedure revision, test result and exception status. Detailed measurements or logs are included only when the approved procedure and data format require them.
How is test coverage established?
Coverage follows the product risk, available interfaces and customer-approved requirements. We do not apply a universal coverage claim to different Box Builds.
Ready to Review Your Box Build Scope?
Have a BOM, assembly drawings, enclosure CAD, harness requirements or test procedure? Send what you have. We’ll confirm the Box Build scope, identify missing information and outline the next step before quotation.
