The manual includes a flow chart for:
In the world of frequency standards and timekeeping, few devices have achieved the cult status of the . This GPS Disciplined Oscillator (GPSDO) is a staple in telecommunication labs, broadcast facilities, and the workbenches of serious time-nuts and radio amateurs. However, these units are now over two decades old. They suffer from capacitor aging, power supply failures, and GPS firmware rollover issues. z3801a service manual