Description
Calculate a supplied phantom measurement/reference signal ratio.
Bench measurements require explicit signal units, calibration signs, geometry and reference conditions. Engineering strain differs from final-length ratio, secant stiffness differs from a material modulus, and nominal contact area differs from actual conductive contact. A supplied coefficient or certificate reference does not establish device validity.
Calculate a supplied phantom measurement/reference signal ratio.
When to use this tool
Use Phantom Reference Signal Ratio when you already have measuredSignal, referenceSignal and need to calculate a supplied phantom measurement/reference signal ratio.
How to use the tool and how it works
- Enter measuredSignal, referenceSignal. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signalRatio. Use the output convention below.
Require referenceSignal!=0; divide measuredSignal by referenceSignal.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredSignal | Measured Signal | Required. Finite number. |
| referenceSignal | Reference Signal | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signalRatio | Signal Ratio | Required. Finite number. |
{
"input": {
"measuredSignal": 8,
"referenceSignal": 10
},
"output": {
"signalRatio": 0.8
}
}Limitations and assumptions
- Signed signals are accepted and their units/bases must match. A ratio does not validate a phantom, calibration, device performance or a clinical interpretation.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified instrument records, calibration data and a complete device/material model. Evaluate uncertainty, operating conditions and appropriate professional requirements before interpreting local ratios or labels as performance, fitness or safety.
References
Similar or alternative tools
- Sensor Zero Offset Correction
Subtract a measured zero offset from a supplied sensor reading.
- Device Calibration Factor Apply
Apply supplied affine sensor calibration coefficients.