{"schema":"1200km.ttp.collection-fixture.v1","synthetic":true,"technique_key":"ics/T0815","purpose":"Collection/parser contract exercise, NOT a positive example or detection of this TTP.","events":[{"schema":"1200km.telemetry.example.v1","synthetic":true,"timestamp":"2026-09-27T12:00:00Z","telemetry_id":"proposed-hmi-communication-health","collector":"illustrative-lab-collector","observation":{"hmi":"lab-hmi-1","controller":"lab-controller-1","connected":true,"last_update_age_seconds":2}},{"schema":"1200km.telemetry.example.v1","synthetic":true,"timestamp":"2026-09-27T12:00:00Z","telemetry_id":"proposed-historian-data-freshness","collector":"illustrative-lab-collector","observation":{"tag":"LAB.TankLevel","sample_age_seconds":30,"expected_interval_seconds":1,"quality":"stale"}}]}