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Low Noise Three Channel Rubidium Frequency Reference with Optional Display NR8403-RO

Three Channel,Low Noise Rubidium Frequency Reference


The NR8403-RO in a versatile modular package bring stability to almost any location. Wide power operating range with optional GNSS locking to further enhance long-term stability (NR8403-RG). The Rubidium source affords outstanding holdover stability (<1 ppb/year). The low noise OCXO adds a low noise OCXO that can be also vibration isolated to reduce mechanical induced phase noise . Phase noise < 155 dBc/Hz at 10kHz.  Unit may also be locked to an external 10 MHz or PPS.  Popular in scientific, calibration labs and satellite up-links.

Harmonics <40 dBc
Excellent holdover stability < +-1ppb/year

Outputs are fault protected and monitored continuously
Built-in test circuitry throughout the design
Available with and without display
10 and 50 MHz available

Need low noise and GNSS locking? NR8403-ROG


Rubidium Sources
GPS/GNSS Locked Rubidium
AC Powered, DC Powered, Low Noise, Auto Calibration, 10 MHz, 50 MHz, Modular Chassis, OCXO

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    Kits are available that include antenna, cables and power supply. Several features can be customized at the factory – frequencies other than 10 MHz either from a unique crystal or with a built-in synthesizer that is GNSS-locked. Time stamping capability to 100ns resolution. To meet unique requirements, we have shipped product with output features requiring a custom amplitude, square wave output, high voltage and high current drive.