Meaning
Reference procedure that utilizes a known-good circuit board with documented performance characteristics to standardize the measurements of test equipment. Routine golden board calibration ensures that different test stations provide identical results when checking the same hardware. The practice prevents false failures that occur when the equipment itself drifts away from its original settings.
Baseline Verification
Testing starts with the insertion of the reference board into the fixture to confirm the station reads every value correctly. If the station shows a deviation from the recorded values on the golden board calibration record, the software adjusts the offsets to match the standard. This step guarantees that the subsequent production units are measured against a stable reference point and that the measurement system is not the cause of any reported failures.
Precise record keeping during this phase allows for the comparison of test results across multiple manufacturing sites.
Drift Control
Mechanical wear in pogo pins and thermal changes in the laboratory can alter the measurement environment over time. Using the reference board at the start of every shift maintains the accuracy of the radio frequency and power measurements. Such a process isolates the tester from the product being tested.
Master Unit Management
Storage of the reference assembly requires an environment that prevents oxidation and physical damage. Because the golden board calibration relies on the absolute stability of the master unit, any change in its condition invalidates the entire test history.
