Manufacturered by Leo Bodnar LTD, the Low-jitter GPS-Locked Precision Frequency Reference Oscillator can be programmed to two output frequencies between 400 Hz up to 800 MHz with a stability of better than 1e-9 (1 part per billion (ppb) within 1 minute after achieving lock to the high accuracy GPS Satellite Network which is controlled by a Caesium Clock with accuracy approaching 1e-12

USB powered, this instrument is 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.

The 2 port GPSDO can be used as an external clock for the SDRplay RSPdx, RSPduo and the older RSP2 or RSP2pro with our RSP Clock-in cable

Light and portable, the  Precision GPSDO Reference Oscillator 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.

• Two synchronized low-jitter reference clocks locked to GPS signal, Digital PLL allows main output reference frequency to have almost any value between 400 Hz and 800 MHz.

• Two outputs can be individually enabled and set to different frequencies. Second output frequency depends on the first output. If both outputs have the same frequency their relative phase shift can be adjusted. This can be used, for example, to generate two signals with 90° phase shift for use in I/Q mixer.

• Both output signals are at 3.3V CMOS levels with 50 Ohms characteristic impedance. Their output drive levels can be adjusted.

  Output power level (measured at 10MHz, fundamental power channel):
  +13.3dBm, drive setting 32mA
  +12.7dBm, drive setting 24mA
  +11.4dBm, drive setting 16mA
  +7.7dBm, drive setting 8mA

• Short term signal quality is defined by internal 0.5 ppm TCXO clock source providing high-quality, low phase noise clock signal with sub-picosecond RMS jitter
  

• USB Powered or +5V External PSU.  Current drawn:  Max: 0.27 Amp

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

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

Information and a downloadable Calculator which frequency combinations can be set on the 2 Port GPSDO

Linux Support: Linux Configuration Application available from https://github.com/hamarituc/lbgpsdo  

Also available: Mini Low Jitter Precision GPSDO Reference Oscillator - see product description for comparison table between the two versions.

Contents:   

• Precision GPSDO Module (100mm x 60mm x 27mm 0.14 kg)
  

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

• 12 month Mfg Warranty
  

• Mfg Product Support information

Optional Items to add to your order:

RG223 cable Length 20 cm  BNC Plug (male) to SMA Plug (male)
This is a custom made cable to connect the VNWA 3E External Clock input to the Precision GPSDO Reference Oscillator

Replacement GPSDO Antenna: Cable length 5 m, fitted with SMA Plug (male) connector
This is a replacement or additional GPS Antenna identical to the one supplied with the Precision GPSDO Reference Oscillator

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