LBE-1420 GPSDO

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 1×10^-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