50 MHz Self Calibrating GNSS Disciplined Oscillator with 1PPS and NMEA – NR3620-50

50 MHz Self Calibrating GNSS GPS Disciplined Oscillator with 1PPS and NMEA – NR3620-100

• GNSS-locked 50 MHz OCXO frequency reference with self-calibration and non-volatile storage
• Low phase noise OCXO delivering locked accuracy <4E-11 and minimal frequency transition <10 ppb
• 1PPS timing output and NMEA telemetry; typical PPS accuracy ≈15 ns (1σ)
• Holdover performance ~7 ppb/day; GPS loss offset typically ±10 ppb via stored coefficients
• Wide input power and flexible power range: DC ranges (10–18, 18–36, 36–65 Vdc) or AC adapter option
• GNSS GPS lock indicator, GPS lock status signaling and built-in self-test for system monitoring
• Available as DO Kit / kit with active antenna and 50 ft cable included for turnkey deployment
• Modular chassis and chassis module options for rack or multi-channel integration
• Designed as a lab reference and low-noise master timing source for simulcast, telecom and test systems

The NR3620-50 is a precision 50 MHz frequency reference disciplined to GNSS for applications requiring exceptional stability and low phase noise. With OCXO-based self-calibration, non-volatile coefficient storage and selectable power options (DC or AC adapter), it delivers robust holdover, accurate 1PPS outputs and NMEA telemetry for master timing, lab reference, simulcast broadcast and telecom synchronization. Kit configurations (active antenna, 50 ft cable) simplify system integration and deployment.

FAQ

1. Q: What power inputs and kit options are available?
   A: The NR3620-50 accepts DC power (10–18, 18–36, 36–65 Vdc) or AC adapter. A DO Kit/kit option includes the reference, active antenna, 50 ft cable and power adapter for turnkey use.
2. Q: What timing outputs and accuracy can I expect?
   A: Provides a 50 MHz output plus 1PPS and NMEA; typical 1PPS accuracy is ~15 ns (1σ) under GNSS lock and PPS accuracy is suitable for precision synchronization tasks.
3. Q: How does the unit handle GNSS loss and drift?
   A: Auto-calibration stores correction coefficients in non-volatile memory so the OCXO maintains stability during GNSS loss (typical GPS loss offset ±10 ppb, holdover ~7 ppb/day).