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Analog signal range that varies in the positive direction only (0V to 10V)
unipolar range
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a signal type, continuous by nature , and varying over a specific range
analog signal
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main analog input module component that translates the incoming signal to a digital value
analog-to-digital converter
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analog signal range that has both a positive and negative swing (-5V to +5V)
bipolar range
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time required by an anolog input mdule to read and digitize all of its input channels
module update time
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a measure of the closeness of an anlog-to-digital or digital-to-analog conversion
signal span
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the numerical value range output from an A/D converter and sent to the CPU to represent the converted analog signal range
A/D binary output
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analog connection in which the measured signal n each channel is the difference between the positive and negative lead for each input
differential inputs
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refers to the absolute current r voltage range off an analog signal, equal to the maximum scale value minus the minimum scale
digital resolution
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analog connection in which all input signals are measured with respect to a common reference potential
single-ended inputs
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the numerical value range acceptable to the D/A converter of an analog output module
single-ended inputs
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the numerical vaule range acceptable to the D/A converter of an analog output module
D/A binary input range
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device composed of two dissimilar conductive metals, that generates a small voltage as a function of termperature difference between a measuring and reference junction
thermocouple
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a device whose resistance changes as a function of its temperature. measuring the resistance change is equivalent to measuring a change in temperature
RTD
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analog output module component that translates outgoing digital values to a corresponding analog signal
digital-to-analog converter
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the widely used 100 ohm platinum type RTD
Pt100
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measurements such as revolutions per minute, pounds per square inch, and degrees Fahrenheit
engineering units
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linearizing the raw data of an analog current r voltage signal range to correspond to some unit such as degrees C, gallons per minute, or pounds per square inch
signal scaling
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the lower limit value used in linearizing analog signal data to engineering units
minimum scaling value
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a hardware or software measure taken to eliminate measuring errors resulting from ambient temperature at the point where the thermocuple wires are connected to the module
cold junction compensation
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the upper limit value used in linearizing analog signal data to engineering units
maximum scaling value
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time required for an analog output signal to stabilize at a new desired level based on the latest output data received from the control program
module update time
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