FieldengRF, Radio & Wireless
Expected vs Observed
Compare modeled received power with a field measurement.
RF, Radio & Wireless
Compare modeled received power with a field measurement.
App id: RF-18. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
Δ = P_observed − P_expectedInputs
| Name | Unit |
|---|---|
| Expected received power | dBm |
| Observed received power | dBm |
Outputs
| Name | Unit |
|---|---|
| Difference (hero result) | dB |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
|fade margin (dB)| ≤ 3 | Close to model | info |
fade margin (dB) < 0 and |fade margin (dB)| ≤ 10 | Weaker than modeled | caution |
fade margin (dB) < 0 | Substantially weaker | warning |
fade margin (dB) ≥ 0 | Stronger than modeled | info |
Assumptions
- Does not prove a single root cause. Context only.
Provenance
- Expected value may come from RF-06. Observed value may be a Field measurement.