Rubidium frequency standards are a low-drift alternative to an OCXO or TCXO with stability of < 1 ppb/year. As high-precision oscillators, Rubidium frequency standards are especially useful for measurement, testing, and many telecommunication applications. To further enhance a Rubidium based frequency reference, Novus offers Rubidium frequency references with an embedded low phase noise OCXO to meet system frequency reference phase noise requirements. A Rubidium reference is alternative source if a GPS disciplined oscillator is not an option.
Affording excellent stability, Rubidium frequency standards are a next best choice when operating in a GPS denied environment. That being said, adding a GPS-locking system will improve the 1ppb/year drift by approximately three orders of magnitude. For typical telecommunication infrastructure, GPS, or other types of applications, Rubidium standards offer excellent holdover performance.
For many applications, the phase noise of a Rubidium reference is not acceptable. The NR2310D-R-O incorporates a low noise OCXO that is disciplined to the Rubidium reference. This product also adds a 26 channel GNSS receiver that brings the long-term stability of GNSS. The GNSS GPS receiver disciplines the Rubidium source. The NR2310D-ROG brings the best of three timing technologies together- the low phase noise of the OCXO, excellent holdover stability of Rubidium and the long-term stability of GNSS locking. Ten channels typically meets the needs of most systems eliminating the need for a distribution amplifier and minimizing noise degradation. All channels are continuously monitored and displayed locally and accessible via RS232 or Ethernet.