MIL-HDBK-1839A
HANDBOOK
DEPARTMENT OF DEFENSE
MIL-HDBK-300 Military Handbook, Technical Information File of Support Equipment
(Unless otherwise indicated, copies of the above specifications, standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)
2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. DEFINITIONS
"3.1 Calibration. The set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system, or values represented by a material measure or a reference material, and the corresponding values realized by standards."
Interpretive guidance: Calibration does not imply that the item being calibrated can be adjusted. There are some items (such as a fixed resistor, or an attenuator) which can be calibrated but not adjusted, and upon failing calibration a new calibration factor is assigned or the item is simply taken out of service or no longer used for making quantitative measurements.
"3.2 Support Equipment (SE). All equipment used in calibration and maintenance support of mission and operational equipment."
Interpretive guidance: Calibration standards are by definition SE as they are support equipment for support equipment.
"3.3 Test, Measurement, and Diagnostic Equipment (TMDE). Any system or device used to test, measure, evaluate, inspect, or otherwise examine materials, supplies, equipment, or a system to identify and/or isolate any actual or potential malfunction, or to determine compliance with specifications established in technical documents (e.g. research, development, test and evaluation documents; specifications; engineering drawings; and technical orders). TMDE is SE that provides for measurement traceability."
Interpretive guidance: TMDE is a sub-set of SE, i.e. all TMDE is SE, but not all SE is TMDE. Calibration standards are a sub-set of TMDE as they are used to test, measure, evaluate, and inspect TMDE and they are essential to establishing traceability.
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