The NR3700-CAL frequency reference continously monitors the correction coefficients being applied to the TCXO to compensate for aging and temperature stability. The coefficients are stored in non-volatile memory and in the event of GNSS loss, are used to maintain the accuracy of the crystal - GPS loss offset +- 10 ppb.  A high performance low cost GPSDO for software defined radios-

• Low phase noise TCXO

• GNSS lock indicator and built in self test

• Hold-Over stability of +-1 ppm/year

• Self-Calibration minimizes frequency transition during GNSS lock to < 10ppb

• Locked accuracy < 4E-11

• Low phase noise

see demo video on YOUTUBE (NR3620)

• Operates from DC Power in three ranges +- (10 to 18, 18 to 36, 36 to 65) VDC or an AC Adapter

• PPS Accuracy 20 ns rms (optional)

• Indicators and signals provide GPS Lock and unity self-test status

• Available in Kit Form (Includes reference, antenna, 50' cable, and power adapter)

GPSDO Kit available, wide input power range (-60 to +60 VDC)

NEED MORE THAN 1 OUTPUT?   See the NR3623-CAL

Data Sheets

• NR3700-CAL-T C DS