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Viavi Solutions has launched the µPNT GDO-1000, a GNSS-disciplined oscillator built in the M.2 B-key form factor, suitable for low size, weight and power (SWaP) platforms.
Measuring 22 x 42 mm (the size of a postage stamp) and weighing less than 4 grams, the GDO-1000 is designed for platforms requiring accurate timing in places where traditional timing modules do not fit or are too power-hungry, including defense and airborne platforms, unmanned systems, data center cards, and communications equipment.
The µPNT GDO-1000 addresses these challenges through a combination of capabilities:
- Dual-frequency L1/L5 GNSS reception with microsecond-class 24-hour holdover enables precise, resilient timing in compromised conditions.
- The M.2 B-key form factor drops into modern compute platforms, time appliance cards, and embedded systems without custom mechanical design, drawing approximately half a watt.
- Patented AI and ML algorithms developed by the Jackson Labs team, now part of VIAVI, predict and compensate for oscillator behavior across environmental conditions
- The microelectro-mechanical systems (MEMS) oscillator delivers better thermal stability across the full military temperature range than traditional quartz oven-controlled crystal oscillators (OCXOs), with sustained phase noise and Allan Deviation performance under vibration and shock
- It accepts an external 1PPS input, allowing it to be disciplined by M-code GPS, alternative navigation sources, or other external references without hardware modification
- Multiple 1PPS and low-phase-noise 10MHz coaxial inputs and outputs for system integration flexibility, despite its miniature size.
The GDO-1000 will be on display by Viavi at booth 407 during the 2026 Joint Navigation Conference, taking place June 1-4 at the Northern Kentucky Convention Center. As part of the event technical program, Lisa Perdue and Nino De Falcis of Viavi will speak on a “New Cesium-Less ePRTC Solution to Provide Timing for Homeland Critical Infrastructure.”
