Leo Bodnar LBE-1420 MINI GPSDO (reference clock unit)

Additional information

Low-jitter GPS-locked precision frequency reference (LBE-1420)
1 Hz and 1.1 GHz output mini version.

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

The device comes with an active GPS antenna with magnetic base.

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

Typical phase noise at 10MHz output:

-71 dBc/Hz at 1 Hz
-100 dBc/Hz at 10 Hz
-126 dBc/Hz at 100 Hz
-144 dBc/Hz at 1 kHz
-153 dBc/Hz at 10 kHz
-158 dBc/Hz at 100 kHz
-163 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 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.

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

Dimensions 69mm x 40mm x 12mm (including SMA connectors)
Power USB-C Connector / USB 5V max 250mA
Antenna Connection Connector SMA Female, max 30mA 3.3V
Output SMA Female / 1Hz-1.1GHz 3.3V / Square Wave
Certification CE

Configuration Software - Click Here to Download