To assist domestic laboratories in complying with the ISO/IEC 17025 standards and the requirements for inter-laboratory comparisons set by the Taiwan Accreditation Foundation (TAF) for domestic calibration laboratories, our laboratory organized the 6th national Tachometer Calibration Proficiency Testing in July and August of this year (112th year of the Republic Era). This event provided an opportunity for domestic tachometer calibration laboratories to validate their calibration capabilities. The activity successfully concluded in early September. Overall, the relative En values of the measurement results from the majority of the participating laboratories fell within the range of |En| ± 1, indicating that the laboratories involved in this event have similar calibration capabilities.

To assist domestic time and frequency calibration laboratories in enhancing their technical capabilities and to facilitate the exchange of technical knowledge in the field of time and frequency, we have planned to organize a training session and business briefing on time and frequency calibration techniques. The main focus of this briefing is to introduce the principles of time and frequency calibration technology and the calculation of uncertainties, as well as to present recent calibration services developed by our laboratory. Over forty participants from more than twenty manufacturers' laboratories attended. The event, conducted as an online briefing, provided personnel in the time and frequency calibration field with relevant training and an opportunity for exchange and discussion.

In compliance with the ISO/IEC 17025 standards and the requirements of the Taiwan Accreditation Foundation (TAF) for inter-laboratory comparisons among domestic calibration laboratories, our laboratory organized the '7th Calibration Field Frequency Measurement Proficiency Testing Activity' in 110th year of the Republic Era. This event provided an opportunity for domestic time and frequency laboratories to validate their calibration capabilities, thereby strengthening the national time and frequency traceability system. The event kicked off with an online briefing on August 27th, followed by a round-robin measurement experiment that took place from the beginning of September to the end of October. The comparison results of 20 participating laboratories were included in the overall assessment. The event successfully concluded with an online summary meeting held on November 5th.