Id Name Aspect Definition
SourceMassApparent Source.Mass.Apparent mass
SourceMassConventional Source.Mass.Conventional mass Test Process that sources a conventional value of the result of weighing a body in air equals the mass of a standard that balances this body under the following conventionally chosen conditions: ambient temperature 20 °C air density 1.2 mg/cm³ mass density 8.000 g/cm³ Conventional mass has the same unit as mass (the kilogram), because the multiplication of a mass by a dimensionless quantity defines its values. Labs typically measure mass and correct the results from actual to conventional conditions. “Apparent Mass versus 8.0 g/cm³” formerly equated to conventional mass in the United States. References: NISTIR 6969 (2019) https://www.nist.gov/publications/nistir-6969-selected-laboratory-and-measurement-practices-and-procedures-support-1 OIML D28 (2004) https://www.oiml.org/en/files/pdf_d/d028-e04.pdf NIST Handbook 44: https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/other-nist-handbooks/other-nist-handbooks-2-3
SourceMassTrue Source.Mass.True mass Test Process that sources a quantity of matter which a body contains, as measured by its acceleration under a given force or by the force exerted on it by a gravitational field. The term “mass” is always used in the strict Newtonian sense as a property intrinsic to matter. Mass is the proportionality constant between a force on a material object and its resulting acceleration. This property is sometimes referred to as “true mass”, “vacuum mass”, or “mass in a vacuum” to distinguish it from conventional [apparent] mass. The true quantity of matter represented in a vacuum with no gravitational force.
SourcePowerACSinewave Source.Power.AC.Sinewave power The process of sourcing a sinusoidal AC Power signal from a device and measuring the value on the UUT. This test process can be used by any device that measures absolute AC power.
SourcePowerACSinewaveSimulated Source.Power.AC.Sinewave.Simulated power The process of sourcing a sinusoidal AC Power signal from a device where the Volts and Amps are provided on two different outputs and measured by the UUT as Watts / Power. This test process can be used by any device that measures AC power with separate voltage and current inputs.
SourcePowerDC Source.Power.DC power The process of sourcing DC Power signal from a device and measuring the value on the UUT. This test process can be used by any device that measures absolute DC power.
SourcePowerDCSimulated Source.Power.DC.Simulated power The process of sourcing a sinusoidal DC Power signal from a device where the Volts and Amps are provided on two different outputs and measured by the UUT as Watts / Power. This test process can be used by any device that measures AC power with separate voltage and current inputs.
SourcePowerNoiseTerminated Source.Power.Noise.Terminated power This process connects a Termination to the input of a measurement device to reduce the noise and outside electrical signals. The test process is typically used to measure the UUT’s internal noise and offsets. And can be expressed in watts or dBm.
SourcePowerRFSinewave Source.Power.RF.Sinewave power
SourcePressureHydraulicStatic Source.Pressure.Hydraulic.Static pressure This test process generates the hydraulic pressure to be measured by the unit under test. The resulting measured will be in the unit of measure as defined in the test point’s data. Note: Although the unit of measure can be read from the test point’s unit of measure it is good practice to pass the Unit of Measure to the test process as a parameter to avoid confusion when synchronizing data between systems. https://en.wikipedia.org/wiki/Pressure_measurement https://www.nxp.com/docs/en/application-note/AN1573.pdf?&srch=1
SourcePressurePneumaticAbsoluteStatic Source.Pressure.Pneumatic.Absolute.Static pressure This test process generates the pneumatic absolute pressure to be measured by the unit under test. The resulting measured will be in the unit of measure as defined in the test point’s data. Note: Although the unit of measure can be read from the test point’s unit of measure it is good practice to pass the Unit of Measure to the test process as a parameter to avoid confusion when synchronizing data between systems. https://en.wikipedia.org/wiki/Pressure_measurement https://www.nxp.com/docs/en/application-note/AN1573.pdf?&srch=1
SourcePressurePneumaticDifferentialStatic Source.Pressure.Pneumatic.Differential.Static pressure This test process generates two pneumatic pressures with a known differential pressure between two points measured by the unit under test. The resulting differential pressure will return in the unit of measure as defined in the test point’s data. Note: Although the unit of measure can be read from the test point’s unit of measure it is good practice to pass the Unit of Measure to the test process as a parameter to avoid confusion when synchronizing data between systems. https://en.wikipedia.org/wiki/Pressure_measurement https://www.nxp.com/docs/en/application-note/AN1573.pdf?&srch=1
SourcePressurePneumaticGageStatic Source.Pressure.Pneumatic.Gage.Static pressure This test process generates the pneumatic gage pressure (or relative pressure) to be measured by the unit under test. The resulting measured will be unit of measure as defined in the test point’s data. Note: Although the unit of measure can be read from the test point’s unit of measure it is good practice to pass the Unit of Measure to the test process as a parameter to avoid confusion when synchronizing data between systems. https://en.wikipedia.org/wiki/Pressure_measurement https://www.nxp.com/docs/en/application-note/AN1573.pdf?&srch=1
SourceRatioAccelerationDeltaAmplitude Source.Ratio.Acceleration.Delta.Amplitude catalytic activity concentration UUT is placed in a device, normally a shaker, which then moves in a single axis direction at a known acceleration at the set frequency. Then the amplitude is changed and the difference in sensitivity is expressed as the slope of the best fit straight line between the data plotted as output (Voltage, IEPE, Current or Charge) vs Test amplitude. Ratio output of linearity expressed as the worst case voltage difference between the measured value and the best fit straight line divided by the full scale output (Voltage, IEPE, Current or Charge)*100 (expressed as a percentage).
SourceRatioAccelerationDeltaFrequency Source.Ratio.Acceleration.Delta.Frequency catalytic activity concentration UUT is placed in a device, normally a shaker, which then moves in a single axis direction at a known acceleration at the reference frequency. Then the frequency is changed to the Test Frequency and difference in sensitivity is expressed as a ratio (Test Frequency / Ref Frequency).
SourceRatioHumidity Source.Ratio.Humidity catalytic activity concentration The generation of humidity as a ratio of the total mass of the water vapor divided by the total volume of air. This is also called volumetric humidity.
SourceRatioPowerRFSinewaveDeltaFrequency Source.Ratio.Power.RF.Sinewave.Delta.Frequency catalytic activity concentration A test process the sources 2 sinusoidal RF signals at different frequencies keeping the power levels constant between the two frequencies. The FrequencyRef signal is sourced and the voltage is measured by the UUT and saved as the Reference value. Then the signal is changed to the test Frequency signal and the test value is measured on the UUT. The two measured values are compared, the results can be expressed as dB or percent of change. These two sinusoidal signals are often used when calibrating bandwidth or frequency response on an Oscilloscope or similar device.
SourceRatioPowerRFSinewaveDeltePower Source.Ratio.Power.RF.Sinewave.Delte.Power catalytic activity concentration
SourceRatioVoltageACSinewaveDeltaFrequency Source.Ratio.Voltage.AC.Sinewave.Delta.Frequency catalytic activity concentration A test process the sources 2 sinusoidal AC Voltage signals at different frequencies keeping the voltage levels constant between the two frequencies. The FrequencyRef signal is sourced and the voltage is measured by the UUT and saved as the Reference value. Then the signal is changed to the test Frequency signal and the Test value is measured on the UUT. The two measured values are compared, the results can be expressed as Delta Volts, dB or percent of change. These two sinusoidal signals are often used when calibrating bandwidth or frequency response on an Oscilloscope or similar device.
SourceRatioVoltageACSinewaveDeltaVoltage Source.Ratio.Voltage.AC.Sinewave.Delta.Voltage catalytic activity concentration A test process that sources 2 sinusoidal AC Voltage signals at different voltage levels keeping the frequency constant. TheVoltageRef signal is sourced and the voltage is measured by the UUT and saved as the Reference value. Then the voltage level is changed and the Test value is measured on the UUT. The two measured values are compared, the results can be expressed as Delta Volts, dB or percent of change. These two sinusoidal signals are often used when calibrating linearity of a device.