Acceptance Testing Written into a Statement of Work
Acceptance testing in a statement of work requires explicit pass-fail criteria, calibrated test fixtures, statistical sampling rules, and milestone payment locks.
Firmware Revision Lock
Meaning
Configuration control policies restrict automated software updates to lock the functional state of a wireless transceiver at a tested and certified version. Applying a firmware revision lock ensures that remote connected modules retain their established characteristics throughout their field service life. This restriction prevents unauthorized modification of tested code and eliminates the risk of operating non-compliant software.
Configuration Control
Production lines apply this restriction to ensure that every finished unit leaves the facility with the exact software configuration specified by the design team. Unintended updates are blocked, preserving the internal states. The system remains stable against unplanned changes.
Certification Preservation
Radio compliance certifications, such as those issued by the FCC, are granted to specific software and hardware combinations. When software updates alter the RF parameters of the device, the original certification becomes invalid. Operating under a locked state preserves the legality of the equipment.
Operational Security
Industrial installations prioritize stability over the addition of unneeded software features. A sudden upgrade can introduce bugs or modify critical communication channels, leading to connection failures. By enforcing this locking policy, operators of remote sensors prevent unsolicited updates from breaking the established wireless connections across the industrial network, saving hours of diagnosis and maintenance work for field technicians.