GPSDO — management

For frequency and time synchronization of two or more devices, GPSDO (GPS Disciplined Oscillator) is used - a device that functions simultaneously as an external reference signal source and a pulse generator 1PPS (Pulse Per Second). This device provides temporary synchronization and stabilization of the frequency parameters of the system by linking to the reference signals of satellite navigation systems.

To integrate GPSDO into the RITM SDR USRP platform, it is necessary to switch the corresponding interfaces. The output signal of the 1PPS GPSDO device is fed to the 1PPS RITM SDR USRP input connector of the same name to ensure temporary synchronization. The output of the reference oscillator (standard frequency 10 MHz) is connected to the external clock input REF IN to stabilize the frequency parameters of the system.