MIL-HDBK-1839A
"c. TMDE recommended for test, measurement, and calibration of ATE shall be selected to support ATE capabilities actually being used for UUT testing and ATE self testing."
"5.4.4.3 ATE Calibration. The design activity shall assess all functions and parameters required for UUT testing, ATE self test, and calibration of the ATE. ATE calibration is implemented as a Test Program Set (TPS) with the program running on the ATE host computer."
Interpretive guidance: A TPS normally consists of three elements; software, hardware (interface device), and documentation.
"a. The ATE/UUT parameters shall be documented to the ATE/UUT interface."
Interpretive guidance: Traceability chains often include active interconnect devices which will be addressed for calibration requirements.
"b. The ATE calibration TPS shall be structured to provide traceability of every calibrated function and parameter to approved national or international standards. To this end, external standards and calibrated ATE components, used as working or secondary standards, shall be used."
"c. The ATE calibration TPS shall calibrate the ATE to a TUR of 4 to 1 when possible (see 5.4.3). This includes, but is not limited to, the most stringent support requirements of the UUT, self-test,
and the calibration TPS itself."
Interpretive guidance: The term "self-test" is interpreted to encompass BIT. For TURs of less than
4 to 1 (see 5.4.3).
"d. In the case of ATE that uses built-in calibration standards, these standards shall be identified with their full measurement and stimuli capabilities (see 4.1c)."
Interpretive guidance: Calibration of the built-in calibration standards needs to be addressed for traceability purposes. The DoD does not recognize self-calibrating, due to the fact that self- calibration can not provide traceability.
"e. Calibration standards or calibration procedures used to support built-in standards shall be recommended."
6. NOTES
6.1 Intended use. This handbook is an informational guide to be used in conjunction with
MIL-STD-1839 which provides a means for calibration and measurement traceability to ensure system and equipment operational integrity and accuracy.
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