||A configurable (base unit plus option cards) time synchronisation instrument with extra security standards and practices. It is used for synchronsing military and commercial systems. The base unit consists of a 1PPS timing signal aligned to a 10MHz frequency signal without any 10 MHz phase discontinuity. Internal oscillators include OCXO, TCXO, Low Phase Noise OCXO (LPN OCXO), Rubidium (Rb) and Low Phase Noise Rubidium (LPN Rb). Up to 6 options cards can add to the configuration of timing signals, including additional 1PPS, 10MHz, time code (IRIG, ASCII, HaveQuick), other frequencies (5MHz, 2.048 MHz, 1.544 Mhz), telecom T1/E1 data rates, multi-network NTP, and NTP, and PTP. It operates using GNSS (GPS/Galileo/GLONASS/BeiDou/QZSS), SAASM GPS or an alternative time as a reference time source (such as another time server) and distributes this information to external systems. Alternative time references include ASCII Timecode, external 1PPS input, external frequency input, PTP, IRIG, built-in clock OR internal 1PPS generation, NTP, HAVEQUICK or a user set time. In GNSS mode, the system can track up to 72 satellites simultaneously. Typical accuracy is 1PPS output +/- 25 to 50 nanoseconds of UTC.