Function; General Working Principle - AAD Vigil Cuatro User Manual

3. Function

3.1. General Working Principle

The Vigil Cuatro must only be turned on at ground level; it will calibrate itself every 2 minutes progressively to the current ground elevation
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pressure. This is the "GROUND ZERO" reference. Once your Vigil
"ground zero" reference is reached, if no or a positive altitude correction is applied. When a negative altitude correction is set, the
Vigil Cuatro will become armed 1000 ft above the preset negative altitude correction, so if the negative altitude correction is over 1000 ft, the
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Vigil Cuatro will become armed maximum 32 sec. after you have reached 90 ft above or under the "GROUND ZERO" reference (take off
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location). Vigil Cuatro will then stay armed until 2 minutes after it has come back to the "GROUND ZERO ZONE" reference (Between + 90ft
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and – 90ft or +27,5 m and -27,5 m).
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Cuatro is on, at each take-off it will become armed once 1000 ft above
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