THE UNITED STATES ARMY
Headquarters
Department of the Army
Washington, DC
15 July 2024

*Army Regulation 750–43

Effective 15 August 2024

Maintenance of Supplies and Equipment

Army Test, Measurement, and Diagnostic Equipment

By Order of the Secretary of the Army:

RANDY A. GEORGE

General, United States Army

Chief of Staff

MARK F. AVERILL

Administrative Assistant to the

Secretary of the Army

History. This publication is a major revision. The portions affected by this major revision are listed in the summary of change.

Authorities. The authorities for this regulation are DoDI 5000.91, DoDD 4151.18, and DoDM 4151.25.

Applicability. This regulation applies to the Regular Army, the Army National Guard/Army National Guard of the United States, and the U.S. Army Reserve, unless otherwise stated. This publication is applicable during mobilization.

Proponent and exception authority. The proponent of this regulation is the Deputy Chief of Staff, G-4. The proponent has the authority to approve exceptions or waivers to this regulation that are consistent with controlling law and regulations. The proponent may delegate this approval authority, in writing, to a division chief within the proponent agency or its direct reporting unit or field operating agency, in the grade of colonel or the civilian equivalent. Activities may request a waiver to this regulation by providing justification that includes a full analysis of the expected benefits and must include formal review by the activity's senior legal officer. All waiver requests will be endorsed by the commander or senior leader of the requesting activity and forwarded through their higher headquarters to the policy proponent. Refer to AR 25-30 for specific requirements.

Army internal control process. This regulation contains internal control provisions in accordance with AR 11-2 and identifies key internal controls that must be evaluated (see appendix B).

Suggested improvements. Users are invited to send comments and suggested improvements on DA FormDA FormDepartment of the Army form 2028 (Recommended Changes to Publications and Blank Forms) directly to the Deputy Chief of Staff, G-4 at usarmy.pentagon.hqda-dcs-g-4.mbx.publications@army.mil.

Distribution. This regulation is available in electronic media only and is intended for the Regular Army, the Army National Guard/Army National Guard of the United States, and the U.S. Army Reserve.

*This regulation supersedes AR 750–43, dated 24 January 2014. Army Directive 2018–07–16, dated 5 November 2018, is rescinded upon publication of this regulation.

AR 750–43 • 15 July 2024

UNCLASSIFIED

Manuals, and Related Data Considerations

Area calibration laboratory An organizational element that provides support for ATSTs, CSMS, TMDE support center metrology equipment, and TMDE beyond their capability to support. The ACL consists of measurement standards and TMDE C&RS metrology equipment and is staffed by civilian personnel.

Area test, measurement, and diagnostic equipment support team An organizational element within a maintenance support company or aviation support company that pro- vides T-Level TMDE C&RS in a mobile or fixed configuration.

Automated test equipment and test program set center The central point of focus at the AFCAFCArea frequency coordinator/AMCAMCU.S. Army Materiel Command MSC level for automated test equipment and TPS test issues.

Automatic test equipment TMDE that performs a predetermined program to test functional or static parameters, to evaluate the de- gree of performance degradation, or to perform fault isolation of unit malfunctions. As a minimum, ATE must be able to sequentially perform testing or measurements, compare the measurements to predeter- mined values or ranges, and based on the result of this comparison, branch to other tests without manual intervention.

Automatic test system ATE, associated system software, all items required for support, and those supported end-items TPSs that may be stored with the ATE.

Built-in-test Hardware and software that are designed into the end-item to test all or part of that end-item.

Built-in-test-equipment Any identifiable device that is a part of the supported end-item and is used for testing that supported end- item.

Calibration The comparison of a measurement system or device of unverified accuracy to a measurement system or standard of known greater accuracy to detect and correct any variation from the required performance specifications of the unverified measurement system or device.

Calibration equipment Measurement standards and TMDE and accessories used in performance of calibration.

Calibration interval The period of time that a calibrated instrument can be expected to retain its specified accuracy within a predetermined confidence level before it must be recalibrated.

Calibration procedure The document that identifies the technical specifications of an instrument to be calibrated, the required measurement standards, and the detailed technical procedure to be used to perform a calibration.

Calibration requirement The identification of an instrument that requires calibration, a statement of the instrument’s specifications that must be verified (for example, accuracies, ranges, and frequencies) and the support application of the instrument.

Calibration standard An instrument, natural physical constant, or materiel with known performance characteristics used as a reference to establish the value and maintain accuracy of a measurement system or instrument.

Certification Endorsement of reliability.

Diagnostic equipment Equipment used to analyze and identify electronic and physical characteristics.

Embedded diagnostics A capability that accomplishes self-diagnosis using onboard resources as an integrated system (for ex- ample, sensors, analytical software, and embedded devices) and collects, correlates, and synthesizes systems performance data to provide a system-level health assessment via onboard processing.

Embedded prognostics A further refinement of ED to address system condition, support failure prediction, and enable anticipatory logistics by use of software algorithms. Prognostic capabilities identify impending failures and provide ap- propriate actionable logistics support direction.

Field maintenance The first operation of the Army maintenance system. Characterized by the performance of maintenance tasks on system in a tactical environment using trained personnel, tools, and TMDE. Field maintenance is typically operator or crew maintenance and repair and return to user maintenance operations.

Hot mockup Any assemblage of repair parts, components, modules, or similar items configured to simulate an end- item or subsystem for the purpose of testing or checking individual or collective parts, component, mod- ules, or similar items.

Instrument master record file The data file that contains identifying information about instruments that require cyclic calibration and re- pair. It also contains identifying information about instruments that require repair but do not require cali- bration.

Interservice support agreement Calibration and maintenance service performed by the organic capability of one military service (or ele- ment thereof), contractor, and other Government agencies in support of another military service (or ele- ment thereof). Such action can be recurring or nonrecurring in character.

Line replaceable unit An essential support item removed and replaced at field level to restore an end item to an operationally ready condition.

Measurement Set of operations having the object of determining a value of a quantity.

Measurement equipment Equipment used to observe a quantitative value or dimension.

Metrology The science of measurement. The study of measurement involves measuring quantities, calibration of in- struments, and determining the uncertainty of a measurement.

National instrument historical database A database maintained by USATA that contains Armywide information about C&RS actions on each in- strument of TMDE.

National standard A measurement standard maintained by the SI, the U.S. Naval Observatory for time and time interval, constituting the highest level of accuracy and legal basis for measurement in the United States.

Non-developmental item Those items available for procurement to satisfy an approved materiel requirement from existing sources (such as, commercial items and items developed by other Government agencies, U.S. military Services, or countries) requiring little or no additional development.

Preferred items list Those TMDE identified that are considered the most advanced and acceptable in their respective families for military use. The TMDE are supportable and procurable in adequate quantities, capable of meeting specific requirements in military environments, and type classified “standard.”

Primary reference standard Measurement standards representing the highest level of measurement capability within the TMDE Cali- bration and Repair program that are normally used and maintained by the USAPSL and Army Primary Nucleonic Laboratories.

Radiation, detection, indication, and computation meter A portable measuring instrument, such as Geiger counter or ionization chamber, used to detect nuclear radiation and dose rate. RADIAC meters may be used to detect or measure (for example, alpha, beta, gamma, x-ray, or neutron radiation).

Sustainment maintenance Sustainment maintenance is the second operation of the Army maintenance system. Sustainment mainte- nance is characterized by the performance of maintenance tasks, off system in a secure environment us- ing trained personnel, tools, and TMDE. Sustainment maintenance is typically repair and return to stock and depot maintenance operations.

Test equipment Equipment used to determine characteristics or values using specific procedures and methods to make a reference measurement.

Test program set The combination of interface devices, software test programs (for example, those residing in logic storage media or in permanent digital memory), and documentation (for example, technical manuals, and tech- nical data packages) that together allow the ATE operator to perform the testing or diagnostic action on the UUT.

Test program set center An organization for management of TPS development, acquisition, fielding, requisition, and support. The centers are normally located within AMCAMCU.S. Army Materiel Command MSCs and provide technical and management support to MATDEVs.

Test, measurement, and diagnostic equipment Any system or device used to evaluate the operational condition of an end-item or subsystem thereof to identify and isolate any actual or potential malfunction. This TMDE includes diagnostic and prognostic equipment; semiautomatic and ATE, to include TPSs (with issued software); and calibration test or meas- urement equipment. TMDE refers to both GP TMDE and SP TMDE.

Test, measurement, and diagnostic equipment accessories Used in conjunction with TMDE. These items are cleaned and maintained according to their manufac- turer’s recommendations but do not have periodic calibration requirements. TMDE accessories are not required to be listed in the IMRF, have a calibration label, or be listed in TB 43 – 180. Examples of TMDE accessories are cables, extenders, adapters, most oscilloscope probes, many dummy loads, and termina- tions.

Test, measurement, and diagnostic equipment register A GP electronic test equipment database that contains the TMDE PIL and ACOMACOMArmy service component command, ASCCASCCArmy service component commander, and DRUDRUDirect reporting unit equipment purchased in accordance with this policy. The website also provides users with means to sub- mit TMDE acquisition requests or waivers for approval.

Test, measurement, and diagnostic equipment support center A center for TMDE C&RS established at strategic geographic locations.

Test, measurement, and diagnostic equipment-general purpose Any TMDE that can be used without modification for support operations of more than one end-item or system. Addition of external special accessories, plug-in assemblies, logic probes, attenuators (or TPSs for ATE) are not considered modifications.

Test, measurement, and diagnostic equipment-special purpose Any TMDE designed specifically for support of and functionally restricted to one end-item or system. To use this TMDE for support of another end-item or system would necessitate modifications to the TMDE. Addition of external special accessories, plug-in assemblies, logic probes, attenuators, or TPSs for ATE are not considered modifications.