Abstract
The hardware design and ASIC realisation of a multichannel interfacing unit is described. This unit is used in a PC-based chromatography system for the acquisition of data from a number of analytic instruments. The attached analogue signals are partially integrated, digitised, buffered in a FIFO memory for speed compensation purposes and, finally, provided to the PC via a serial asynchronous RS-232-C connection. Based on the acquired integrals, the evaluation software employs a novel numerical method for extracting the parameters of the chromatographic peaks. A standard graphical user interface is employed for the visualisation of the chromatograms being processed.
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