VIAVI introduces GNSS-disciplined oscillator for precision timing
VIAVI has announced the launch of the µPNT GDO-1000, a new GNSS-disciplined oscillator built in the M.2 B-key form factor. Measuring just 22mm x 42mm, 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 defence and airborne platforms, unmanned systems, data centre cards and communications equipment.
GNSS interference has become a persistent and ongoing operational concern. Dual-frequency L1/L5 reception is increasingly specified in defence and critical infrastructure procurements as a baseline requirement. Demand for compact, low-power precision timing continues to grow across multiple markets, especially as warfighters and unmanned platforms limit payload to stay agile, and customers who designed in chip-scale atomic clocks (CSACs) face cost and lead-time pressure.
“Until now, customers needing reliable timing in compact systems have had to choose between two suboptimal options. CSACs are expensive and supply-constrained. Full-size OCXO-based timing solutions are too large and power-hungry for many modern platforms,” said Doug Russell, Senior Vice President and General Manager, Aerospace & Defence, VIAVI. “The GDO-1000 offers a new path that doesn’t force customers to compromise. 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.”
The GDO-1000 will be on display at VIAVI Booth 407 at the 2026 Joint Navigation Conference from June 1-4 at the Northern Kentucky Convention Centre. As part of the event technical program, Lisa Perdue and Nino De Falcis of VIAVI will speak about a New Cesium-Less ePRTC Solution to Provide Timing for Homeland Critical Infrastructure.
