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Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. Data acquisition systems, abbreviated by the acronyms DAS or DAQ, typically convert analog waveforms into digital values for processing. The components of data acquisition systems include:

– Sensors, to convert physical parameters to electrical signals.
– Signal conditioning circuitry, to convert sensor signals into a form that can be converted to digital values.
– Analog-to-digital converters, to convert conditioned sensor signals to digital values.

Part Number Output High Drive CurrentInput Load CurrentPower Requirements Action
1781-PXB1201 200uA (Vout=2.5 V dc) ± 10 mA +5V: 400 mA (typical) Add Quote 4
1781-PXB241 200µA (Vout=2.5 V dc) +10 mA +5V: 400 mA (typical) Add Quote 1
1781-PXB481 +5V: 400 mA (typical) 20 uA +5 VDC from computer bus (ext. 1A fast-blow fuse recommended) Add Quote 2
1781-PXB721 200uA (Vout=2.5 V dc) ± 10 mA +5V: 400 mA (typical) Add Quote 3