The GPS center clock can automatically accept the satellite time or accept the external time source information, after the internal high-tech processing, and through other interfaces to allocate accurate time signals to other equipment that needs time service.

SYN4505 standard synchronous clock

The GPS Center Clock adopts advanced multi-mode satellite receiver. The timing signal is easy to receive: the coverage range is large, and there is no communication blind area. The central clock with multiple sources combined with GPS satellite, Beidou satellite and GLONASS satellite timing integrates several time benchmarks, adaptive filtering technology and internal heartbeat detection, and other core technologies to realize multi time source automatic switching and time integration. It has higher safety and reliability.

After the power is switched on, enter the working state and the original LCD of the front panel LCD.

The default reference source of the GPS center clock is the Beidou +GPS mode, and the self travel time is displayed.

LCD display and setting function

The buttons on the right side of the LCD display function corresponding to the right side of the LCD. When the user needs to choose to switch the working mode, press the second buttons at the current working interface, and the function represented is working mode.

Then the system enters into the working mode operation interface. There are three modes of work, namely, automatic mode, manual mode and punctual mode. These three modes represent the following meanings:

The automatic mode indicates that the system automatically selects the external reference as the reference clock source of the center clock. After selecting the satellite signal, the B signal is selected when there is no satellite signal, and the external reference can not be manually selected.

"Manual" indicates that the center clock system can manually select external time reference sources, and the system can not automatically select external references.

The punctual mode of punctuality indicates that the system does not use external reference as the clock source, and uses its own constant temperature crystal oscillator as the clock source to automatically travel time.

In the working mode design interface, the function of the key is also displayed on the right side of the LCD. Through the button, the working mode that needs to be switched is selected automatically, manually and punctuality. According to the confirmation, confirm the selection, press cancel, and cancel the current setting.

Similarly, when the satellite mode is needed, at the current working interface, the satellite mode will enter the satellite mode design interface and set up the satellite mode. The following picture:

There are six options for satellite mode:

"GPS&BD": GPS, Beidou dual system mixed time service;

"GPS&GLONASS": GPS and GLONASS double system mixed time service;

"BD&GLONASS": Beidou and GLONASS dual system mixed time service;

"GPS": single GPS time service;

"BD": a single Beidou time service;

"GLONASS": single GLONASS time service.

System setup function

Users can set up three functions through the system setup function, namely UTC setting, baud rate setting and delay setting.

When UTC is needed, the system settings interface is set according to UTC, and goes to the UTC setup interface, and the time zones are set up. The system is default to +8 time zone.

When baud rate is needed, the system interface is set to baud rate based on baud rate, and baud rate has six common baud rates.

When delay settings are needed, the system setup interface is set up on time, and is set to the setup interface. The setting time range is -99999 to +99999us, and the + number indicates the advance, the number indicates lag, and the system acquiescence is 0 delay.

The GPS center clock can generate AC and DC IRIG-B code signals, all kinds of second pulse signals, NTP network timing, serial port time information and 1PPS (second signal) synchronization pulse signal, and so on.

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