Description

A new 400 Hz to 810 MHz output mini version of Leo Bodnar's popular low jitter GPS Clock - designed for Users with a limited budget or space restrictions, whilst still delivering accuracy and performance.

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 400Hz and 810MHz.
Output signal is 3.3V CMOS levels with 50 Ohms characteristic impedance. Output drive level 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

Powered via mini USB connector from a PC, USB phone charger or USB power bank. USB connection to Windows PC is required only for one-off configuration.

Like its big brother, the Mini 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.

SDR-Kits recommends either version 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 Mini GPSDO can be used as an external clock for the SDRplay RSPdx, RSPduo and the older RSP2 or RSP2pro with our GPSDO - RSP External Clock-in Cable
Please note that a SMA Plug to BNC Jack Adapter Connector, or similar is required to connect the External Clock Cable to the Mini GPSDO

Please see comparison table below listing the differences between the two GPSDO models:

Feature	Mini GPSDO (One Output)	Standard GPSDO (Two Output)
Stability	+1E-9 within 1 min after GPS Lock	+1E-9 within 1 min after GPS Lock
Frequency Range	400 Hz – 810 MHz programmable	400 Hz – 810 MHz programmable
Reference Clock Outputs and Connector Type	1 SMA Output Connector	2 BNC Outputs programmable independently with restrictions
Output Level	4 step programmable +7.7 +13.3 dBm	4 step programmable +7.7 +13.3 dBm
USB Power Supply	5V USB-cable to PC or Charger	5V USB-cable to PC or Charger
External Power Supply	Not available	Ext DC +5V - 15VDC Power connector fitted
Dimensions	73mm x 40mm x 17mm 0.05 Kg	110mm x 60mm x 25mm 0.12 Kg
Package Contents	Mini GPSDO, GPS Antenna, USB Cable	Standard GPSDO, GPS Antenna, USB Cable
Typical Application	Clock Source for applications requiring a single Reference Clock	Ham Station Reference Clock Source 10 MHz for Test equipment and 24 MHz for RSP1 or K3 or other Rig

How to make high accurate precision frequency measurements 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

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

Package Contents:

Precision GPSDO Module (73mm x 40mm x 17mm - 0.05Kg)
GPS Magnetic Antenna with 5m Coax Cable and fitted SMA male plug

USB Cable A to Mini B

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 3EC 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

GPSDO - RSP External Clock-in Cable plus SMA Plug to BNC Jack Adapter 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