VIAVI Solutions has introduced the µPNT GDO-1000, a GNSS-disciplined oscillator built in the M.2 B-key form factor measuring 22mm by 42mm and weighing under four grams — designed for defense, airborne, and unmanned platforms where traditional timing modules are too large or power-hungry to integrate.
The company announced the product on the opening day of the Joint Navigation Conference in Covington, Kentucky, where VIAVI is exhibiting at Booth 407.
The GDO-1000 combines dual-frequency L1/L5 GNSS reception with microsecond-class 24-hour holdover from a MEMS-based oscillator — positioning it as an alternative to chip-scale atomic clocks, which VIAVI says face increasing cost and supply chain pressure across defense procurements. The MEMS oscillator delivers thermal stability across the full military temperature range and sustained phase noise and Allan Deviation performance under vibration and shock. 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 module draws approximately half a watt and accepts an external 1PPS input, allowing it to be disciplined by M-Code GPS or alternative navigation sources without hardware modification.
“The GDO-1000 offers a new path that doesn’t force customers to compromise,” said Doug Russell, Senior Vice President and General Manager, Aerospace and Defense at VIAVI. “Its holdover performance approaches what customers expect from atomic-class clocks, in a module that fits on a standard M.2 slot and draws approximately half a watt.”
VIAVI staff will also present on a cesium-less ePRTC solution for homeland critical infrastructure timing as part of the JNC technical program.
