Novus offers a range of GNSS GPS disciplined oscillators and related reference products. While our most popular frequency reference is 10MHz, many of our products are available at 50 and 100 MHz. Unique frequencies are available as well. Novus references can be OCXO , TCXO or Rubidium based. GNSS-locking enhances long-term stability. Stability options are available that incorporate vibration and thermal isolation. Our reference products are available in 19 inch rack mount and modular, chassis. Our miniature PicoPod series fits almost anywhere. Novus reference distribution amplifiers offer minimal phase noise contribution and skewing. Novus PPS sources can be synchronized to a 10 MHz reference to provide a complete timing solution. Our PPS sources can be directly from a GPS PPS source or processed to improve jitter and statistical accuracy. For GNSS denied environments, Novus offers a range synthesized 1PPS sources. Our PPS distribution amplifiers offer sub 1 nsec skewing and transient and fault protection. For enhanced control and monitoring, SNMP and local control are available as options. Portable reference products offer excellent holdover stability to provide accuracy in GNSS denied environments.
The Novus KronosΙ represents our highest performance reference for the most demanding master reference applications. The 184 channel GNSS receiver provides critical timing information that is highly processed to minimize reference jitter and noise. The receiver supports. GPS L1C/A L2C, GLO L1OF L2OF, GAL E1B/C E5b, BDS B1I B2I, QZSS L1C/A L1S L2C, SBAS L1C/A. To assure the integrity of the reference, a separate GNSS receiver is used as an independent time base for an internal gapless frequency counter to monitor the master reference.
A real time continuous calculation of Allan Deviation is performed and is likely the best indicator of reference health one could have. Data logging allows the user to review timing performance on any day from a performance log that is more than two years deep. Alerts can be established to detect a variation from Allan Deviation standard performance.
To further enhance stability, the timing control network and reference are vibration and thermally-isolated. The timing loop operates with a 40 psec resolution to enhance process control. Power supplies include wide bandwidth linear regulators to eliminate ripple noise from the amplifiers. Amplifiers are further isolated with individual passive filters and the amplifiers have over 100 dB of 60 Hz rejection. Every element of the design is focused on stability and noise reduction.
Low Phase noise clean-up OCXO
Continuous Allan Deviation calculation
Dual Time base provides real-time reference monitoring
Data logging rolling two years of more performance data
10 channels of 10 MHz 13 dBm sine wave
SNMP reports complete status
Allan Deviation < E-13
Rackmount or Benchtop
Monitoring of all internal critical circuitry
Statistical analysis of reference performance
Data logging to demonstrate past performance as required.
GPS DO 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.