Abstract:A high-precision clock equipment detection system based on BDS is described. A BDS receiver is used by the system to perform real-time training and calibration on the built-in rubidium clock as the system time-frequency reference. It generates the time-frequency sources required by each module through Direct Digital Synthesizer technology, and then modulates and conditions the desired final signals (various frequency signals and E1 signals) separately. In addition, the system can regulate sine waves, square waves, and triangular waves, and design multi-cycle and multi-phase synchronization methods to measure various frequency signals; it also achieves measurements for various time-frequency signals through FPGA, including IRIG-B signals, Precise Time Protocol (PTP) signals, Network Time Protocol (NTP) signals, and 1Pulse Per Second+Time Of Date (1PPS+TOD) signals.