This is a GPS-disciplined, oven-controlled crystal oscillator (GPSDO), which is compatible with a USRP X300 or X310. It can also be used with the USRP B200/B210, but the system will require external power. The GPSDO provides a high-accuracy 10 MHz reference and 1 PPS signal, which allow developers to build systems that serve applications with improved frequency accuracy and global timing alignment.
Module Specifications
- 1 PPS Accuracy: ±50 ns to UTC RMS (1-Sigma) GPS Locked
- Holdover Stability: <±20 µs over 3 hour period at +25 C
- 1 PPS Output (OCXO Flywheel Generated): 3.3 VDC CMOS
- RS-232 Control: NMEA & SCPI-99 Control Commands, Integrated into UHD
- GPS Frequency: L1, C/A 1574 MHz
- GPS Antenna: Active (5 V compatible) or Passive
- GPS Receiver: 50 Channels, Mobile, WAAS, EGNOS, MSAS capable
- Sensitivity: Acquisition -142 dBm, Tracking -168 dBm
- TTFF:
- Cold Start: <45 sec,
- Warm Start: 1 sec,
- Hot Start: 1 sec
- ADEV: 1E-11 at 1 sec
- Warm Up Time / Stabilization Time: <5 min at +25 C to 1E-08 Accuracy
- Supply Voltage (Vdd): 3.3/5 VDC
- Power Consumption: 0.7 W Max
- Operating Temperature: 0 C to +60 C
- Storage Temperature: -45 C to 85 C
Oscillator Specifications:
- Frequency Output: 10 MHz
- 10 MHz Retrace: ±2E-08 after 1 hour at 25 C
- Frequency Stability Over Temperature (Unlock Condition): ±2.5E-08
- Warm Up Time: < 1 min at +25 C
- Phase Noise at 10 MHz:
- 1 Hz: -75 dBc/Hz
- 10 Hz: -110 dBc/Hz
- 100 Hz: -132 dBc/Hz
- 1 kHz: -142 dBc/Hz
- 10 kHz: <-145 dBc/Hz
What's Included:
- Board-Mounted GPSDO (OCXO)
- Documentation for Installation and Configuration/Setup
Recommended for use with:
- A USRP X300 and USRP X310 for a high-accuracy clock reference.
- Add a GPSDO Mini GPS Antenna to synchronized the GPSDO to the GPS constellation for 25 ppb frequency accuracy and 50 ns alignment across the globe.
