This paper mainly talks about the main functions of the high-speed synchronous data acquisition card, gives a brief explanation of its main functions, and illustrates the application environment of the high-speed synchronous data acquisition card.

High speed synchronous data acquisition card is a collection card which mainly appears in the form of bus. Its bus mode is mainly represented by PCI/PCIE/CPCI and other commonly used bus forms, and the output is collected directly according to the protocol of each form. The main reason is that the output accuracy of the acquisition card bus is higher than that of any transmission mode, and it meets the high precision and high accuracy. Speed, data acquisition characteristics of high resolution transmission.

The high precision synchronous data acquisition card is transmitted to the host computer by bus transmission mode and used for data processing. The high precision synchronous data acquisition card mentioned in this paper is illustrated by the example of the SYN301 time synchronization data acquisition card. It can receive the user specified input signal before completing the data acquisition task. When the standard time synchronization data acquisition card's input signal is GPS Beidou satellite signal, it enters the reference type as a time synchronization mode, and this high precision synchronous data acquisition system is adopted. According to the performance characteristics of the user, the card can select a variety of time synchronization signals such as GLONASS/PTP/IRIG-B (DC/AC) /1PPS/10MHZ/CDMA/E1 and so on, and achieve the one-to-one correspondence between the collected data and the standard time or the standard time defined in the user system.

High speed synchronous data acquisition card tooth decay is the external signal of system time which is set up by trigger signal and clock reference signal. The external signal mainly includes two modes: single ended and differential trigger, and multi-channel trigger acquisition can be selected. The clock signal sets the frequency information of the data. When the acquisition starts, triggers will generate linkage signals, which will inform the data of the acquisition.

After the high speed synchronous data acquisition card starts to collect, the external clock frequency is consistent with the data acquisition instrument data. The trigger signal determines the trigger point of the data acquisition instrument separately, and the trigger point linkage is consistent with the starting point of the data acquisition instrument. The external clock signal is used to ensure the synchronization and stability of the data acquisition signal in the whole process.

High speed synchronous data acquisition card achieves precise data acquisition by external clock, trigger and bus control. The signal processing function used in high-speed data acquisition card and host can enhance the processing of the acquired signal, or extract the most useful information by simple measurement. At present, the high speed synchronous data acquisition card is mainly used in the data acquisition of the general computing organization laboratory, product quality inspection center, power transmission and other fields.

The copyright of this article belongs to Xi'an in all respects, respecting originality, strictly prohibit manuscript, unauthorized, no reprint, copyright, infringement must be investigated!