Technical Note · v1.0

Designing FAT/SAT gates from PoC to production

Separate accuracy, takt, false decisions, failure, recovery and operational acceptance.

A technician validating an industrial control cabinet and edge system

PoC gate

Confirm sample conditions and model feasibility while documenting data scope and exception conditions.

  • Inspection or measurement target definition
  • Performance calculation method
  • Failed-sample review procedure

FAT gate

Validate the standard configuration and interfaces before shipment.

  • Approved BOM and golden image
  • I/O, mission and recipe scenarios
  • Failure, recovery and rollback tests

SAT gate

Confirm production handover criteria in the actual site environment.

  • Line speed, shifts and product changeover
  • Safety, network and upper-level systems
  • Operator training and SLA start conditions

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