en.Wedoany.com Reported - VIAVI Solutions Inc. (NASDAQ: VIAV) has launched the µPNT GDO-1000, a new GNSS disciplined oscillator in an M.2 B-key form factor. Measuring just 22mm x 42mm and weighing less than 4 grams, the module is designed for platforms that require precise timing but cannot accommodate traditional timing modules or have power constraints. Application scenarios include defense and airborne platforms, unmanned systems, data center cards, and communication equipment.
GNSS interference poses a persistent and long-term operational challenge. Dual-frequency L1/L5 reception is increasingly becoming a baseline requirement in defense and critical infrastructure procurement. Market demand for compact, low-power precision timing continues to grow, particularly as warfighters and unmanned platforms limit payloads to maintain agility, and customers adopting chip-scale atomic clock (CSAC) designs face cost and lead time pressures.
The µPNT GDO-1000 addresses these challenges through a combination of capabilities. The module features dual-frequency L1/L5 GNSS reception with microsecond-level 24-hour holdover performance, enabling precise and resilient timing under degraded conditions. The M.2 B-key form factor allows direct insertion into modern computing platforms, timing device cards, and embedded systems without custom mechanical designs, with power consumption of approximately 0.5 watts. Patented AI and ML algorithms developed by the Jackson Labs team (now part of VIAVI) predict and compensate for oscillator behavior under varying environmental conditions. Micro-electromechanical systems (MEMS) oscillators provide superior thermal stability compared to traditional quartz oven-controlled crystal oscillators (OCXO) across the full military temperature range, maintaining consistent phase noise and Allan variance performance under vibration and shock. The module also accepts an external 1PPS input, allowing it to be disciplined by M-code GPS, alternative navigation sources, or other external references without hardware modifications. Despite its extremely small size, the GDO-1000 provides multiple 1PPS and low-phase-noise 10MHz coaxial inputs/outputs for system integration flexibility.
Doug Russell, Senior Vice President and General Manager of Aerospace and Defense at VIAVI, stated that previously, customers needing reliable timing in compact systems had to choose between two suboptimal options: CSACs are expensive and supply-constrained, while full-size OCXO-based timing solutions are too large and power-hungry for many modern platforms. The GDO-1000 offers a new path where customers do not have to compromise, with holdover performance approaching what customers expect from atomic clocks, while the module fits into standard M.2 slots and consumes approximately 0.5 watts.
The GDO-1000 will be demonstrated at the 2026 Joint Navigation Conference, held June 1-4 at the Northern Kentucky Convention Center, booth 407. As part of the event's technical program, VIAVI's Lisa Perdue and Nino De Falcis will present on "A Novel Cesium-Free ePRTC Solution for Timing in Critical National Infrastructure."
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