Analog digital conversion

Sheingold, 1986] Sheingold, D. H., editor (1986). Analog-digital conversion handbook, 3rd Ed. Prentice-Hall. 

Data Acquisition (e.g., sampling rates and analog-digital conversion Nyquist criterion aliasing) Signal Analysis 23 11 34... 

Channel AEBIL signal conditioning modules (variable amplifier, RMS measurement, floating threshold level, analog to digital conversion signal) ... 

Data system. Components used to record and process information during the analysis of a sample. The system includes a computer and an analog-to-digital conversion module as well as other control devices for data recording, storage, and manipulation. 

Pulse Inputs Where the sensor within the measurement device is digital in nature, analog-to-digital conversion can be avoided. For rotational devices, the rotational element can be outfitted with a shaft encoder that generates a known number of pulses per revolution. The digital system can process such inputs in either of the following ways ... 

Digitization rate The rate that represents the number of analog-to-digital conversions per second during data acquisition must be twice the highest signal frequency. 

Time-domain detection results in histograms of photon arrival times. In time-correlated SPC, the time-bins correspond to the analog-to-digital conversion levels, whereas in time-gated SPC, the time-bins are the time-windows during which the photoncounting gate is activated. 

Fig. 14.9. Schematic representation of the analog-to-digital conversion process. The continuous analog signal output by the detector is sampled, converted into digital data points and transferred to the data system.

The complete analytical system is under the control of a Motorola 6802 microprocessor. All switching of gas flows, timing, temperature control, error detection, analog to digital conversion, FID current measurement, signal Integration and manipulation, and data storage and transfer are controlled by this system. 

Kriz, 1976] Kriz, J. S. (1976). An Audio Analog-Digital-Analog Conversion System. In 55th Convention. Preprint 1142. 

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