Signal-to-Noise Ratio / SINAD / ENOB Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-with-binding-errata

Evidence ID

t5-199

Effect

Computation or source lookup only

Input and validation requirements

The only supplied equation defines SINAD-to-ENOB arithmetic. It does not define SNR-to-SINAD, THD-to-SINAD, or any actual formula branches, and it does not specify validation for units or extreme magnitudes. Large finite JavaScript inputs also lose the 1.76 subtraction through floating-point precision.

Required corrections

[
  {
    "vector": 3,
    "field": "ENOB_bits",
    "wrong": 10,
    "correct": 10.0066,
    "cause": "justified with 6.02×10=60.24 (false); her own v2 reports unrounded"
  }
]

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "SINAD_dB": 1.76
  },
  "expected_outputs": {
    "ENOB_bits": 0
  },
  "working": "ENOB=(SINAD−1.76)/6.02=(1.76−1.76)/6.02=0/6.02=0 bits. Boundary case: SINAD equal to 1.76 dB produces zero ENOB."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche5/tranche5-results.json
• tranche errata record