| 摘要 |
The present invention relates to techniques for the synchronized recording and playback of data coming from a plurality of terminal devices. Each terminal device (E1, E2, E3, E4, E5, E6) sends out data on a communications line (L1, L2, L3, L4, L5, L6) that is proper to it. The transmission on this line may be synchronous or asynchronous, parallel or serial, according to any unacknowledged protocol. The disclosed recording system (S1) comprises at least: (a) one or more routers (M1, M2) connected to the communications lines, each communications line being connected to a single router, for the sampling at constant frequency of the signal (PDU, NS) on each communications line, even when there are no transmitted data, so that each terminal device has a corresponding stream of sampled bits; (b) a local area network (RE) to which the routers are connected and on which the routers send out the streams of sampled bits; (c) a central processing unit (UC) connected to said local area network for the recording, in one or more binary files, of said bit streams sent out by said routers on said network. The invention can be applied especially to the testing of air traffic management systems, the terminal devices being radars in this application.
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