LBE-1420 GPSDO locked clock source

Low jitter GPS-locked frequency clock source
1 Hz to 1.1 GHz output

This device outputs high purity signal with frequency locked to GPS.

LBE-1420 is perfect for both - accurate frequency calibration and RF reference use in mixers or multipliers.

Frequency stability of its output is defined by the accuracy of GPS satellite onboard Caesium references and approaches 1x10^-12 or 0.000001 ppm.

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

Multi-loop digital-analog PLL allows output frequency to be set to any value between 1 Hz and 1.1 GHz with infinite resolution. For example, 144800000.025Hz

LBE-1420 can often be pushed to operate beyond its guaranteed frequency range - all the way up to 1.5 GHz.
It can supply a vast range of common output frequencies such as: 10MHz, 100MHz, 24MHz, 25MHz, 27MHz, 100MHz, 1MHz and many more

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

LBE-1420 comes with a magnetic base active GPS antenna.

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

Typical phase noise at 10MHz:

-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 1 MHz

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 but can be substituted by other common types. 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 this frequency hold is glitchless.

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. LBE-1420 comes ready to use and configured for 10MHz output. USB connection to computer is required only for configuration changes. 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.

Examples of use include:
 10.000MHz, 1.000MHz or other frequency reference for lab equipment and instrumentation
 reference for transmitter equipment - HAM equipment, propagation beacons, frequency markers, VHF, UHF and microwave converters.
 reference for receiving equipment, RTL SDRs (28.8MHz) and band scanners
 calibration source for radio receivers
 master clock for audio and video equipment, DACs and studio recording gear

Specifications:

Phase noise plot for default 10MHz output:

Configuration application for Winodws:

Please contact us at support@leobodnar.com if you have any questions.

Configuration Software v1.06 - Click Here to Download

Github repo for command line linux application:https://github.com/simontheu/lbe-1420

Mac App is available from the App Store, search for Leo Bodnar

Latest Firmware - version 1.06 - Click Here to Download

Serial port driver for Windows 8/7/Vista/XP - Click Here to Download

Configuration Software v1.06 - Click Here to Download

Latest Firmware - version 1.06 - Click Here to Download

Serial port driver for Windows 8/7/Vista/XP - Click Here to Download