Systems intelligence workbench
These are not product rankings and they do not interpret fish returns. Each tool either tests an electronics path, explains documented architecture, records local evidence, or exposes the provenance and limits of a public technical claim.
Turn a symptom into a branching sequence of cheap discriminating tests and explicit stop conditions.
01Diagnostic decision engine
One symptom. One variable. One cheaper next test.
Do not diagnose a protected out-of-water transducer as a dead source
If the source is being tested on the trailer or above the waterline, put the transducer in water and repeat the same source check before changing power, network or transducer hardware. Record any transmit-protection setting before altering it.
Failure domain: power. Record only what happened to the symptom; do not infer a failed component from a single branch.
power
2active
2 documented branches can test this path for the selected symptom.