Fluke 5700A Series II Operator's Manual page 321

legal units
The highest echelon in a system of units, for example the U.S. National Bureau of
Standards volt.
life-cycle cost
The consideration of all elements contributing to the cost of an instrument throughout its
useful life. This includes initial purchase cost, service and maintenance cost, and the cost
of support equipment.
linearity
The relationship between two quantities when a change in the first quantity is directly
proportional to a change in the second quantity.
linearity error
Linearity error occurs when when the response curve of a meter is not exactly a straight
line. This type of error is measured by fixing two points on the response curve, drawing a
line through the points, then measuring how far the curve deviates from the straight line
at various points on the response curve.
MAP (Measurement Assurance Program)
A program for a measurement process. A MAP provides information to demonstrate that
the total uncertainty of the measurements (data), including both random error and
systematic components of error relative to national or other designated standards is
quantified, and sufficiently small to meet requirements.
MTBF (Mean Time Between Failures)
The time interval in operating hours that can be expected betweenfailure of equipment.
MTBF can be calculated from direct observation or mathematically derived through
extrapolation.
MTTF (Mean Time to Fail)
The time interval in operating hours that can be expected until the first failure of
equipment. MTF can be calculated from direct observation or mathematically derived
through extrapolation.
MTTR (Mean Time to Repair)
The average time in hours required to repair failed equipment.
metrology
The science of measurement, and its field of knowledge.
D
Appendices
Glossary
D-5