Validated against GUM Principles
This calculator has been AI‑reviewed and tested against the GUM framework to verify accuracy, stability, and methodological correctness.
While reasonable care has been taken, users remain responsible for ensuring results are appropriate to their application and quality system. No responsibility is accepted for how results are used.
This review assesses the Attenuator Uncertainty Calculator on calibration.info, which enables users to build and evaluate uncertainty budgets in line with the Guide to the Expression of Uncertainty in Measurement (GUM).
The calculator allows users to add, remove, and edit multiple uncertainty sources, each with an assigned distribution type. It calculates standard and expanded uncertainty in real time. Input validation ensures that only positive numeric values are accepted.
Calculations were independently verified using known data sets and Python scripting. Results from the calculator matched expected outcomes precisely across a variety of test cases.
Case Description | Expected Result | Calculator Output | Compliance |
---|---|---|---|
Initial 9 sources including rectangular and triangular types | Expanded uncertainty ≈ 0.0493 dB | 0.0493 dB | Correct |
Adding source with 0.004 dB triangular | Expanded uncertainty ≈ 0.0506 dB | 0.0506 dB | Correct |
Removing largest component (0.022 dB normal k=2) | Expanded uncertainty ≈ 0.0437 dB | 0.0437 dB | Correct |
Conclusion: The Attenuator Uncertainty Calculator provides robust, GUM-compliant results for standard and expanded uncertainty. It is suitable for professional engineering or calibration applications when used by trained personnel. Users should verify source appropriateness and ensure quality system alignment.