Based on the time interval generator in the JJG 723-2008 time interval generator verification regulation, this paper mainly describes the equipment characteristics and function characteristics of the time interval generator. It is a high performance standard source device suitable for the development and application of the time and frequency at this stage.

For the equipment characteristics of time interval generator, based on the characteristics of the SYN5612 time interval generator, the design reference of the device is based on the "JJG 723-2008 time interval generator verification regulation". A time interval generator designed on the basis of meeting the regulations is used as a standard source in various time control systems, when calibrating and calibrating time interval measuring instruments.

The time interval generator is based on the oscillation period of the high stable quartz crystal oscillator. The SYN5612 type is built with a high stable crystal oscillator in the design. At the same time, the external frequency reference reference with higher accuracy can be selected as the time benchmark according to the user's request. The digital synthesis technology is used to generate various types of time interval signals, such as the rush period, the delay time and the pulse width, etc., which can be set up in the verification regulation requirements of the time interval generator.

In the application of time and frequency calibration, time interval generator often needs other equipment as auxiliary, such as meeting time interval measuring instrument, stopwatch verification and so on, so as to realize its unified application function as a standard device, making it unable to meet other auxiliary conditions in most occasions, but can not carry out the metrological verification work and produce a lot of disadvantages.

In the traditional design work mode, the SYN5612 type time interval generator abandons the previous design parts, adopts the new program control connection method to carry out the overall control, improves the traditional use technology level of the time interval generator, and is suitable for the metrological application of the standard time interval generator, such as the Metrology Institute and the Research Institute.

The design of time interval generator follows the requirements of the verification regulation to the equipment parameter standard, including the requirements for the crystal oscillator inside the equipment, the output requirements of the time interval and the pulse output requirements. On this basis, the performance of the equipment has been greatly raised, and a new design optimization has been made for various parameters, so as to fully meet the new user demand for the time interval generator.

At the same time, the SYN5612 time interval generator can set pulse time interval generator widely used in navigation, communication and other applications in time and frequency measurement. Before this device, the SYN5301 time tester can also be used as a simple time interval generator. At the same time, it can also check stopwatches, pointer type electric stopwatches, digital milliseconds, and other digital time interval measuring devices, and so on, and it follows the verification regulation of stopwatch calibrator.

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