LibreTimeBase: Rubidium clock control board

The goal of this project is to create a device that is able to interface with multiple rubidium frequency standards and provide additional functionality. The following are the main functions and features of the project: Distribution Amplifier with Isolated Output: The distribution amplifier is able to receive an input signal, amplify it and transmit it to multiple output ports. Isolated outputs ensure that each output port does not interfere with the other, which is important when using the same frequency standard in multiple devices or systems. Clock generation and 5V TTL clock output: The device is capable of generating accurate clock signals. The 5V TTL clock output is a standard digital signal that can be read and used by many digital devices. Calibration and adjustment via electronic frequency control or serial interface: Electronic frequency control allows the user to adjust frequency accuracy remotely or locally. Serial interfaces (such as RS-232 or USB) provide a convenient way to configure and monitor devices. 1PPS input as calibration reference or master clock for rubidium frequency standard: 1PPS (one pulse per second) is a commonly used time reference signal used to synchronize various devices. The device can accept an external 1PPS signal and use it for calibration or as its primary time reference. 1PPS output with user-selectable pulse length (and frequency, not necessarily 1PPS): The device can also generate a 1PPS output signal, which is useful for synchronizing other devices or systems. The user can select the length and frequency of the pulses to meet specific application needs. (Optional) Built-in GNSS receiver for calibration: The GNSS (Global Navigation Satellite System) receiver can receive signals from GPS, GLONASS, Galileo and other satellites. Calibration using GNSS signals can provide a more accurate and stable time reference. Monitor operating parameters and health indicators (built-in test equipment, supply current, temperature, lamp voltage, etc.): The monitoring function allows the user to view the status of the device in real time and be notified if problems arise. Built-in test equipment (BITE) can automatically perform diagnostic tests to check the performance and health of the device. Mains voltage monitoring, overvoltage and reverse voltage protection: Mains voltage monitoring ensures equipment is operating within the correct voltage range. Overvoltage and reverse voltage protection prevent equipment damage due to unsuitable power conditions. In summary, this project aims to create a highly integrated and flexible device that can interface with multiple rubidium frequency standards and provide a range of functionality and monitoring options to meet the needs of a variety of applications. The goal of this project is to create a device that can interface
with a wide range of Rubidium Frequency Standards and provide additional
functionality:Distribution Amplifier with isolated outputsClock Generation and 5V TTL clock outputCalibration and adjustments via Electronic Frequency Control or Serial Interface1PPS in as a calibration reference or master clock for the Rubidium Frequency Standard1PPS output with user selectable pulse length (and frequency, need not be 1PPS)(optional) built-in GNSS receiver for calibrationMonitoring of operating parameters and health indicators (Built In
Test Equipment, Supply Current, Temperature , Lamp Voltages, ...)Supply Voltage monitoring, overvoltage and reverse voltage protection