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Whats a quick way to determine if a terminal on the Analog Inout (AI) card is faulty?

April 26, 2017ai analog card determine faulty Quick terminal

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Whats a quick way to determine if a terminal on the Analog Inout (AI) card is faulty?

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Using a multimeter, measure the resistance between the AI negative terminal (for example AI_1 – ) and the ground terminal at the top of the AI card (make sure the ground screw is threaded all the way in before you do this test). You should measure 25 ohms resistance, otherwise this input is not good.