DATA ACQUISITION CARD, EXPANSION CONTROL SYSTEM FOR DATA ACQUISITION CARD AND METHOD THEREOF

摘要

A data acquisition card, an extension control system of data acquisition cards and method thereof are disclosed. The method includes: presetting a card address for each data acquisition card, and presetting a channel address for each data channel in the data acquisition card; the data acquisition card generating a corresponding card address signal after receiving a card beat signal from a user circuit, and judging whether the data acquisition card is gated; and if the data acquisition card is gated, then generating a corresponding channel address signal after receiving a channel beat signal from the user circuit, and gating a data channel corresponding to the channel address signal. The data acquisition card, the extension control system of the data acquisition cards and method thereof have the strong extensibility and high stability.