Libera Reference Master Oscillator

Libera Reference Master Oscillator (RMO) is used as a low-noise and stable source of an RF signal which can serve for synchronization of different devices (e.g. LLRF stations in an accelerator).

Libera RMO from Perspective
Product Description
References

Libera Reference Master Oscillator (RMO) general description:

Libera RMO is used as a low-noise and stable source of an RF signal which can serve for synchronization of different devices (e.g. LLRF stations in an accelerator). The core of the device is a low-noise oven controlled crystal oscillator (OCXO) which guarantees long-term stability. Direct Digital Synthesis (DDS) technology is used to generate output RF signals at different frequencies. The DDS is utilized to provide frequency sweep functionality.

Optionally the Libera RMO can be locked to an external reference RF signal (e.g. a rubidium oscillator or GPS signal) by means of phase locked loop (PLL). In this way even better long-term stability can be achieved.

Benefits:

  • Down to <60 fs RMS jitter integrated from 10 Hz to 10 MHz
  • Frequency stability in the free-running mode 5*10^-11 (Allan Deviation)
  • Customized to the user frequency
  • Ethernet attached device, EPICS IOC

Compatible with other Libera products:

Libera Reference Master Oscillator performance
Product codeLRMO1.D00.109LRMO1.D00.102
Output signal frequency2800 MHz to 3120 MHz*50 Hz - 350 MHz*
Nominal output signal power+18 dBm*+15 dBm*
Integrated phase noise from 10 Hz to 10 MHz < 60 fs RMS< 90 fs RMS
Harmonic suppression< 50 dBc up to 5th harmonic < 50 dBc up to 5th harmonic
Frequency stability in free running mode (Allan Deviation)5*10^-115*10^-11
Output power stability0.05 dB/°C 0.05 dB/°C
Return loss< -15 dB< -15 dB
PPL lock time< 30 s< 30 s
Reference RF input SMA-F, 50 Ω, 10 MHz, -20 dBm to + 10 dBmSMA-F, 50 Ω, 10 MHz, -20 dBm to + 10 dBm
Stability operation temperature20-25 °C 20-25 °C

*Customizations are possible.

Libera Reference Master Oscillator is used at the following labs:

  • Shanghai Jiao Tong University, China
  • Sabina – Laboratori Nazionali di Frascati dell’INFN, Italy

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