Proficiency Tests

Time & Frequency Measurement

Frequency # 1

The Frequency # 1 test is intended to validate the calibration laboratory’s ability to measure and disseminate frequency. The artifact is an Electronic Research Company model 130 rubidium oscillator. The approximate artifact expanded uncertainty of the proficiency test is 1 x 10-11.

Stopwatch # 1

The Stopwatch 1 test is intended to validate the calibration laboratory’s ability to calibrate Stopwatches and Industrial Timers. The approximate artifact expanded uncertainty3 of the proficiency test is 0.13 seconds per day (1.5 ppm per 24 hours).