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.
We recommend reading the GPSDO Selection Guide to ensure this is the right device for your application.
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Module Specifications |
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1 PPS Accuracy |
±50ns to UTC RMS (1-Sigma) GPS Locked |
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Holdover Stability |
<±20µs over 3 hour period at +25C |
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1 PPS Output (OCXO Flywheel Generated) |
3.3VDC CMOS |
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RS-232 Control |
NMEA & SCPI-99 Control Commands, Integrated into UHD |
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GPS Frequency |
L1, C/A 1574MHz |
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GPS Antenna |
Active (5V compatible) or Passive |
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GPS Receiver |
50 Channels, Mobile, WAAS, EGNOS, MSAS capable |
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Sensitivity |
Acquisition -142dBm, Tracking -168dBm |
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TTFF |
Cold Start: <45 sec, Warm Start: 1 sec, Hot Start: 1 sec |
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ADEV |
1E-11 at 1s |
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Warm Up Time / Stabilization Time |
<5 min at +25C to 1E-08 Accuracy |
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Supply Voltage (Vdd) |
3.3/5VDC |
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Power Consumption |
0.7W Max |
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Operating Temperature |
0C to +60C |
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Storage Temperature |
-45C to 85C |
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Oscillator Specifications |
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Frequency Output |
10MHz |
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10MHz Retrace |
±2E-08 after 1 hour at 25C |
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Frequency Stability Over Temperature (Unlock Condition) |
±2.5E-08 |
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Warm Up Time |
< 1 min at +25C |
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Phase Noise at 10MHz |
1Hz |
-75dBc/Hz |
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10Hz |
-110dBc/Hz |
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100Hz |
-132dBc/Hz |
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1kHz |
-142dBc/Hz |
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10kHz |
<-145dBc/Hz |
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