Current location - Education and Training Encyclopedia - Education and training - 9000 multi-line control principle of Gulf alarm host
9000 multi-line control principle of Gulf alarm host
The principle is that four pcm buses from the user circuit enter the multiplexer. The task of the multiplexer is to

1, change serial code to parallel code (8 bits).

2. Four pcm channels are merged, that is, four serial 2mbps voice signals are converted into 256kbps parallel voice signals after serial/parallel conversion respectively.

3. Multiplex it into a parallel code of 1mbps and send it to the voice memory of Class T connector. At present, all Fuan devices adopt multi-wire terminators, FA+ and FA- are connected to the DC screen, and OUT 1 and OUT2 control external devices, which can output 24V after operation, and FK 1 and FK2 receive passive feedback.

4. When the input module of GST-LD-8319 is connected in series with the non-coding detector, the base of the detector should be connected with diode 1N58 19, and the output loop terminal must be connected with GST-LD-8320 or GST-LD-8320A terminator, which can be used as the base of the detector.