8_CHANNEL_CRO_MULTIPLEXER

Published:2009/7/7 20:37:00 Author:May | From:SeekIC

Simple adapter converts any single-trace oscilloscope into professional 8-channel model by multiplexing eight input signals into one output for vertical amplifier. Discrete voltages are picked off resistor divider chain sequentially and added to digital input signal so trace is shifted fast enough to produce eight individual traces. Addressing for 74151 digital multiplexer requires 3 bits of binary code to address all eight channels in sampling sequence. As each channel is sampled, its logic level (1 or 0) appears at pin 5 of 74151 for feed to vertical input of CRO. Developed for troubleshooting in digital circuits.-W. J. Prudhomme, Build an Eight Channel Multiplexer for Your Scope, Kilobaud, April 1977, p 29-32.



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