Jan21_2005_2pp

Jan21_2005_2pp - January 21, 2005 Thanks for the emails...

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1 January 21, 2005 ¾ Thanks for the emails – still waiting for some . . . ¾ NOTE: 1 st problem set/reading assignments are posted! ¾ Office Hours: will be posted by Monday 2 Signal Processor ± Buffers input and output transducers ( impedance matching) Dispersive Element Input Transducer Signal Processor Examples: •Amplification •Current-to-voltage conversion •AC-to-DC conversion •Modulation/waveshaping •ADC and/or DAC •Math (log, FT, integration)
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3 Output Transducer ± Converts electrical signal into a “human- understandable” signal Dispersive Element Input Transducer Signal Processor Output Transducer •Most often, a computer •Also does much of the signal processing Decoding 4 The General Instrument Dispersive Element Input Transducer Signal Processor Output Transducer Decoding Chemical System Signal Generator External Signal Encoding Analytical Signal
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5 Quantitative Properties of Analytical Instrumentation Chemical Property S i g n a l Signal distorts or saturates
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Jan21_2005_2pp - January 21, 2005 Thanks for the emails...

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