LBE-1420 GPS Locked Clock Source 1 Hz to 1.1 GHz output

An upgraded version of the popular 1 Port Mini GPSDO by Leo Bodnar Electronics

• Programmable Frequency 1 Hz - 1.1 GHz

• Stability 0.01 ppb 1E-11 <60 sec Locktime

• 1 SMA Output Connector
  

• Ideal for use with SDR Receivers
  

The LBE-1420 GPSDO can be used as an Universal Reference Clock for most other Instruments and Applications which up to now would require a bulky and expensive Rubidium Clock.

SDR-Kits recommends the Leo Bodnar GPSDO modules as the ideal frequency standard for supplying an external reference clock signal to the DG8SAQ Vector Network Analyzer to make Frequency and Frequency Difference measurements with accuracy  approaching 1e-10 and frequency  measurements (dF) in the mHz
(milli Hertz) and even down to the uHz (micro Hertz) region.

Also, the LBE-1420 can be used as an external clock for the SDRplay RSPdx, RSPduo, RSP2 or RSP2pro with our SMA Plug to MCX Cable

The LBE-1420 offers:

• Long term stability of output signal is defined by high accuracy of GPS Caesium references and approaches 1x10^-12

• Short term signal quality is defined by internal TCXO clock source providing high-quality, low phase noise clock signal with sub-picosecond RMS jitter.   

• Digital PLL allows main output reference frequency to have almost any value between 1 Hz and 1.1 GHz  - output may be pushed up to 1.5 GHz

• Output signal is a square wave at 3.3V CMOS levels with 50 Ohms characteristic impedance.
  

• Output power level (measured at 10MHz, fundamental power channel): +10.3dBm

  Typical phase noise at 10MHz output:
  

• 70 dBc/Hz at 1 Hz
• 100 dBc/Hz at 10 Hz
  
• 125 dBc/Hz at 100 Hz
• 145 dBc/Hz at 1 kHz
• 150 dBc/Hz at 10 kHz
• 153 dBc/Hz at 100 kHz
• 155 dBc/Hz at 1MHz
  

• Power draw through 5V USB is 250mA.

Operation requires presence of GPS signal, however temporary loss will be tolerated seamlessly. Active or passive antennas are supported. An active antenna with 5 metre cable is provided with the device but can be substituted if necessary. GPS acquisition time after power-up is around 30 seconds. If GPS signal is lost, digital PLL will maintains best estimated output frequency based on historical data. On reacquisition of GPS lock, output is seamlessly brought back in sync with GPS reference. Entry and exit of frequency hold is glitch-less.

Frequency setting is configurable via USB connection from Windows PC.

GPS clock can be powered via USB-C connector from a PC, USB phone charger or USB power bank. USB connection to Windows PC is required only for one-off configuration. All settings are stored inside the device and maintain values when off. The SMA antenna connector voltage is 3.3V. Most active antennas work on a wide range - 2.5v to 5v because they have analogue LNA inside that is not sensitive to power level.

How to set up the Mini GPSDO as an External Clock Reference for the VNWA 3EC:  Guide to setting up Mini GPSDO as external reference clock, instead of internal VNWA TCXO when taking VNWA measurements.

    -GPS Locked Clock Source module  (69mm x 40mm x 12mm  - 0.04Kg)

    -GPS Magnetic Antenna with 5m Coax Cable and fitted SMA male plug

    -USB-C Cable

    -24 month Mfg Warranty

    -Mfg Product Support info

 Accessories also available from SDR-Kits:

• RG223 20cm Coax Cable with BNC plug to SMA plug connectors (GPSD - VNWA Ext Reference Cable)

• SMA Plug to MCX Cable - external clock for the SDRplay RSP Rx
  

• GPS Antenna 5m Long SMA Plug
  

SDR-Kits is an Authorised Distributor for the Leo Bodnar Ltd Precison GPSDO Reference Oscillator

Also available from our Authorised Distributor for Japan: ICAS Enterprises  www.ICAS.to 

LBE-1421 GPS Locked Clock Source 1 Hz to 1.4 GHz output

An upgraded version of the popular 2 Port GPSDO by Leo Bodnar Electronics

• Programmable Frequency 1 Hz - 1.4 GHz

• Stability 0.01 ppb 1E-11 <60 sec Locktime

• 2 SMA Output Connector
  

• Ideal for use with SDR Receivers
  

The LBE-1421 can be used as an Universal Reference Clock for most other Instruments and Applications which up to now would require a bulky and expensive Rubidium Clock.

SDR-Kits recommends the Leo Bodnar LBE-1420 and 1421 units as the ideal frequency standard for supplying an external reference clock signal to the DG8SAQ Vector Network Analyzer to make Frequency and Frequency Difference measurements with accuracy  approaching 1e-10 and frequency  measurements (dF) in the mHz (milli Hertz) and even down to the uHz (micro Hertz) region.

Also, the LBE-1421 can be used as an external clock for the SDRplay RSPdx-R2, RSPduo, RSP2 or RSP2pro with our SMA Plug to MCX Cable

The LBE-1421 offers:

• Long term stability of output signal is defined by high accuracy of GPS onboard Caesium references and approaches 1x10^-12
  

• Output phase noise is shaped by high quality internal TCXO clock source providing clean clock signal with sub-picosecond RMS jitter.

• Multi-loop digital-analog PLL allows output reference frequency to have almost any value between 1 Hz and 1.4 GHz on Output 2 and between 1 Hz and 800 MHz on Output 1 with infinite resolution eg: 144800000.025Hz  N
  

  LBE-1421 can often be pushed to operate beyond its guaranteed frequency range - all the way up to 1.5 GHz.
  

• Output signal is a square wave at 3.3V CMOS levels with 50 Ohms source impedance. It can be used directly by most instrumentation and RF equipment.
  

• Output power level (measured at 10MHz, fundamental power channel): +11dBm

  Typical phase noise at 10MHz output:
  

• 72 dBc/Hz at 1 Hz
• 101 dBc/Hz at 10 Hz
  
• 128 dBc/Hz at 100 Hz
• 147 dBc/Hz at 1 kHz
• 156 dBc/Hz at 10 kHz
• 159 dBc/Hz at 100 kHz
• 164 dBc/Hz at 1MHz
  

• Power draw through 5V USB is 250mA max.
• Rise/fall time of output signal at 10MHz is 300ps/260ps measured between 10% and 90% levels.

Operation requires presence of GPS signal, however temporary satellite signal loss is handled seamlessly with no frequency or phase jumps. Active or passive antennas are supported. An active antenna with 5 metre cable is provided with the device but can be substituted if necessary. GPS acquisition time after power-up is around 30 seconds. If GPS signal is lost, digital PLL will maintains best estimated output frequency based on historical data. On reacquisition of GPS lock, output is seamlessly brought back in sync with GPS reference. Entry and exit of frequency hold is glitch-less.

Frequency setting is configurable via USB connection from Windows PC.

Satellite signal NMEA data telemetry is available via virtual serial port over USB connection.

GPS clock can be powered via USB-C connector from a PC, USB charger or USB power bank. USB connection to Windows PC is required only for one-off configuration. All settings are stored inside the device and maintain values when off. The SMA antenna connector voltage is 3.3V. Most active antennas marked as 3.3V or 5V will work.

The LBE-1421 GPS Locked Clock Source can be used as an Universal Reference Clock for most other Instruments and Applications which up to now would require a bulky and expensive Rubidium Clock.

How to make high accurate precision frequency with the VNWA Thanks to Kurt Poulsen for preparing this report and sharing his expertise.

How to set up the Mini GPSDO as an External Clock Reference for the VNWA 3EC:  Guide to setting up Mini GPSDO as external reference clock, instead of internal VNWA TCXO when taking VNWA measurements.

Package Contents:   

• GPS Locked Clock Source module (69mm x 40mm x 12mm  - 0.04Kg)
  

• GPS Magnetic Antenna with 5m Coax Cable and fitted SMA male plug

• USB-C cable
  

• 24 month Mfg Warranty
  

• Mfg Product Support information

 Accessories also available from SDR-Kits:

• RG223 20cm Coax Cable with BNC plug to SMA plug connectors (GPSD - VNWA Ext Reference Cable)

• SMA Plug to MCX Cable - External Clock Cable for use with RSP Rx

• Replacement GPSDO Antenna: Cable length 5 m, fitted with SMA Plug (male) connector

SDR-Kits is an Authorised Distributor for the Leo Bodnar Ltd Precison GPSDO Reference Oscillator

Also available from our Authorised Distributor for Japan: ICAS Enterprises  www.ICAS.to