The Masterclock GMR1000 is an enterprise-grade time and frequency generator/server built into a robust and compact design. This Missioncritical Stratum 1 timing solution synchronizes to GPS, GNSS, IRIG-B, NTP or PTP reference and is backward compatible with legacy signals. Internal disciplined highstability oscillator options allow for critical holdover resiliency.The GMR1000 is a high- precision time and frequency reference devices. It serves the needs of commercial establishments, industry, military and laboratory environments. NTP, GPS, NMEA, NENA, Time Code, 10 MHZ, IEEE 1588 PTP, PPS, PPO,and high-stability oscillator options are available.