Frequency Reference, 10 MHz OCXO GPS Locked with Optional Synthesized Secondary Channel

The NR4320-CAL is a GPS locked OCXO, 10 MHz frequency reference with PPS, RS232 and an optional secondary channel that can be programmed from 14 KHz to 10 MHz. The unit features Auto-Calibration so that the most recent coefficients to compensate the OCXO for drift due to aging and/or temperature are stored and applied to the OCXO during GPS loss of lock conditions. The NR4320-CAL operates from a 5 VDC power source or available AC power adapter. (For a wider DC operating power range, see the NR3620-CAL). High performance 26 channel GPS receiver that supports GPS, GLONASS, SBAS, QZSS. By being able to receive data from multiple satellite constellations, lower lock time is achieved. With twice the number of satellites in view, as a GPS only configuration, achieving and maintaining lock in poor signal environments is enhanced.

  • Holdover stability of 5 ppb/day,  50ppb/year

  • Locked accuracy <4E-11

  • Operates from 5 VDC

  • Concurrent reception of GPS and GLONASS

  • PPS accuracy 20 ns rms

  • Indicators and signals provide GPS lock and unit self-test status

Typical Phase Noise

Phase Noise (dBc/Hz)

1 Hz                        -100

10 Hz                      -120

100 Hz                    -132

1KHz                       -140

Data Sheets