Frequency References

Frequency References

Novus offers a diverse set of frequency reference products. From our low cost TCXO frequency references to our Rubidium frequency references to our high-performance GPS disciplined references (GPS DO) -Novus frequency references offer low phase noise, accuracy and reliability. From one to twenty channels, modular, rackmount, portable or micro-packaged- Novus offers a form factor to meet your frequency reference needs. Available features include redundant power, SNMP, self-test, ultra-low phase noise, dual-Time base, real-time Allan Deviation, and synthesized frequency references.

For use cases that demand greater precision, we have GPS disciplined oscillators that will provide single satellite tracking capabilities that are GLONASS compatible and therefore supported by GPS, GLONASS, QZSS, and SBSS networks.

If you’re unsure which frequency reference you require, don’t hesitate to reach out. We are also able to manufacture custom units for unique applications.

Single Channel Low Cost 10 MHz OCXO Reference NR3700-O

Single Channel 10 to 100 MHz Frequency Reference, OCXO Based

10 to 100 MHz Reference operates from -60 to +60 Vdc in Three Ranges or an AC adapter


The NR3700 10MHz frequency reference uses a low noise SC cut OCXO as the master timing source. The unit is offered at up to 100 MHz. The OCXO is biased with a band-gap reference to provide excellent temperature and and aging stability.  LED indicator provides self-test status. There is also a floating solid state relay that can be tied to an alarm panel self test status.

The NR3700 contains an optional factory configurable frequency synthesizer that operates from sub-1 Hz to 10 MHz.  The output is available on the SMA as a CMOS signal at 5 Vdc or 3.3 Vdc  CMOS capable of driving a 50 ohm load. An excellent simulated 1PPS source. The synthesized signal is also available as a LVDS or RS422.


The unit also has a LVDS, RS422 option.

  • Low phase noise OCXO
  • Hold-Over stability of 5 ppb/day, 50ppb/year
  • Operates from DC Power in three ranges +- (10 to 18, 18 to 36, 36 to 65) VDC or an AC Adapter
  • Indicators and signals provide self-test status
  •  CMOS and/LVDS
  • Frequency synthesizer from sub-1 Hz to 10 MHz

Brand : Novus          SKU :NR3700-O




OCXO Frequency References
OCXO References
AC Powered, DC Powered, Low Noise, 10 MHz, 100 MHz, 50 MHz, OCXO

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