SyncEdge-A is a portable time/frequency synchronization instrument developped for meeting test requirement of different fields and industries. It supports high precision measurement, analysis and evaluation for a variety of different time/frequency interfaces. It is widely used in PRC/PRTC/ePRTC synchronous devices, 3G/4G/5G mobile backhaul, telecom IP-Carrier/Access network, Intelligent Substation(IED), Highways, Railway Transit, Air transportation, Satellites, Vessel calibration and traditional Accounting system, in which areas comprehansive time/frequency measurements are significantly required.