10MHz Frequency Reference, OCXO, GNSS-Locked, Six-Channel, Auto

10MHz Frequency Reference, OCXO, GNSS-Locked, Six-Channel, Auto-Cal

NR3626-O/G

The NR3626-O/G is a high performance 10 MHz frequency reference that is driven by a low phase noise SC cut OCXO disciplined by a 26 channel GNSS receiver. The 10 MHz outputs are 13 dBm while the PPS output can be 3.3V or 5.0V logic levels with the capability of driving a 50 Ohm load.

The disciplining loop for the 10 MHz OCXO features an algorithm that affords very low close in phase noise. The bandwidth is such that many of the low frequency artifacts of the transmission path are successfully attenuated.

Default settings of the frequency loop can be adjusted, as outlined in the Programmer’s Guide.

The 26 channel GNSS receiver offers improved robustness with concurrent reception of GPS and GLONASS. Supports GPS, GLONASS, SBAS and QZSS.

Product Features:

Simultaneous support for GPS, GLONASS, SBAS, and QZSS for improved robustness and satellite coverage.
10 MHz outputs deliver +13 dBm, suitable for driving standard loads.
PPS (Pulse Per Second) output selectable between 3.3V and 5.0V logic levels, capable of driving a 50 Ohm load.
Advanced disciplining algorithm ensures very low close-in phase noise and attenuates low-frequency transmission path artifacts.
Adjustable frequency loop settings, configurable via the Programmer’s Guide.
PPS signal available as received or as a synthesized, low-jitter PPS (jitter <2 ns).
On startup, defaults to OCXO-derived PPS, which is actively disciplined by GNSS lock for enhanced stability.
Wide primary power input range: -60V to +60V DC (in three selectable ranges); optional power adapter available.
Offered as a standalone unit or as a kit including antenna, power supply, and cable for turnkey deployment