{
  "capability_id": "units.rf.dbm_watts",
  "tool_id": "dbm-watt",
  "engine": "dbm-watt",
  "calculation_version": "1.3.1",
  "generated_at": "2026-11-10T05:18:41.762Z",
  "engine_build": "2026-09-13",
  "test_count": 22,
  "passed": 22,
  "failed": 0,
  "tests_summary": {
    "golden": {
      "passed": 9,
      "total": 9
    },
    "boundary": {
      "passed": 7,
      "total": 7
    },
    "property": {
      "passed": 6,
      "total": 6
    }
  },
  "engine_tested": true,
  "expert_reviewed": false,
  "internally_reviewed": true,
  "review_kind": "internal",
  "source_checked": true,
  "reviewed_by": "CalculatorX electrical review",
  "reviewer_role": "electrical-engineer",
  "last_reviewed": "2026-09-13",
  "expert_review": {
    "status": "not_applicable",
    "reviewer": null,
    "note": "Internal domain review completed; not a named external expert review.",
    "kind": "internal"
  },
  "internal_review": {
    "status": "approved",
    "reviewer": {
      "name": "CalculatorX electrical review",
      "role": "electrical-engineer"
    },
    "reviewed_at": "2026-09-13",
    "scope": [
      "formula",
      "input semantics",
      "assumptions",
      "limitations",
      "sources",
      "tests"
    ],
    "kind": "internal"
  },
  "page": "https://www.calculatorx.com/calc/electric/dbm-watt",
  "api": "https://www.calculatorx.com/api/v1/calc/dbm-watt",
  "schema_input": "https://www.calculatorx.com/schemas/units.rf.dbm_watts.input.json",
  "schema_output": "https://www.calculatorx.com/schemas/units.rf.dbm_watts.output.json",
  "assumptions": [],
  "limitations": [
    "W/mW must be >0 for reverse log",
    "Hard INVALID_MODE",
    "IEEE-754 binary64 overflow → NUMERIC_OVERFLOW",
    "IEEE-754 binary64 underflow to 0 → NUMERIC_UNDERFLOW"
  ],
  "boundary_conditions": [
    "W/mW ≤0 → VALUE_MUST_BE_POSITIVE",
    "Bad mode → INVALID_MODE",
    "binary64 overflow → NUMERIC_OVERFLOW",
    "binary64 underflow to 0 → NUMERIC_UNDERFLOW"
  ],
  "sources": [
    {
      "title": "NIST Technical Note 1850",
      "section": "Appendix B — dBm ↔ milliwatt",
      "url": "https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.1850.pdf",
      "supports": "P_mW = 10^(dBm/10); dBm = 10 log10(P_mW)",
      "kind": "standard",
      "accessed": "2026-09-12",
      "publisher": "NIST",
      "document_id": "NIST.TN.1850",
      "document_title": "Microwave and Millimeter Wave Power Standards"
    },
    {
      "title": "ITU / RF practice — dBm",
      "section": "0 dBm = 1 mW",
      "supports": "Log power ratio definition relative to 1 mW",
      "kind": "standard",
      "publisher": "ITU"
    }
  ],
  "methods": [],
  "fingerprint": "sha256:70149db348a403e63c9b97ad4beab414c61eaf2afd8f6a75b247bc1cd5c5ca9c",
  "tier": "internally_reviewed",
  "verification": {
    "tests": {
      "passed": 22,
      "total": 22,
      "golden": 9,
      "boundary": 7,
      "property": 6
    },
    "contract_checks": {
      "passed": 6,
      "total": 6
    }
  },
  "evidence_core_generated_at": "2026-09-13T01:52:28.084Z",
  "rendered_at": "2026-11-10T05:18:41.762Z",
  "release_integrity": {
    "status": "verified",
    "scope": "workspace",
    "production_attestation_required": true,
    "calculation_version": "1.3.1",
    "artifacts": {
      "engine": "1.3.1",
      "page": "1.3.1",
      "capability": "1.3.1",
      "evidence": "1.3.1",
      "input_schema": "1.3.1",
      "output_schema": "1.3.1",
      "mcp_contract": "1.3.1"
    },
    "digests": {
      "input_schema_sha256": "5c5082367485b8e59088bb08713c44d492dd090fe1de3b0106d7d9e0f24a0864",
      "output_schema_sha256": "70209a1ef3a4b1bd56a1e3ccd63ca6fd22bbbe5c4076cda21fff1bade4645a74",
      "evidence_sha256": "94d42c3aaebc20563fdc087aa227be1bd2fed87c9f8d266ed0ffcd219421583b",
      "evidence_core_sha256": "94d42c3aaebc20563fdc087aa227be1bd2fed87c9f8d266ed0ffcd219421583b",
      "capability_sha256": "e35edfad4ba3888aa4000e6df6936c1845556471f3e8af18870e6fa1e3dc646a",
      "engine_sha256": "c6ebd8436f08b413e1ac6317b2d48550f2e6639a90dff254244e3aa562158b8d",
      "mcp_contract_sha256": "eb3e39ad4a95ed263415b4932f185d5edfe00a2403267b7c5ed5f718d1ff6da3"
    },
    "contract_checks": {
      "total": 6,
      "passed": 6,
      "failed": 0,
      "items": [
        {
          "id": "release-artifacts-aligned",
          "status": "pass",
          "detail": "1.3.1"
        },
        {
          "id": "schema-output-required-declared",
          "status": "pass"
        },
        {
          "id": "schema-valid-input-executes",
          "status": "pass"
        },
        {
          "id": "engine-success-output-validates-schema",
          "status": "pass"
        },
        {
          "id": "schema-rejects-incomplete-input",
          "status": "pass"
        },
        {
          "id": "rest-success-payload-validates-schema",
          "status": "pass"
        }
      ]
    },
    "report": "https://www.calculatorx.com/.well-known/calculatorx-release-integrity.json"
  },
  "tests": [],
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary"
  }
}