ground seeking / positive seeking gen.

[unibelle]

Пожалуйста, помогите перевести. ground seeking / positive seeking

Выражение встречается в следующем контексте:
Система сигнализации в вертолете

The caution/warning/advisory panel is comprised of 36 individual annunciator positions.
Of the 36 annunciators, 32 are illuminated with a ground input (ground seeking), three are illuminated with a 28 VDC bus input (positive seeking), and one is illuminated with a combination ground and 28 VDC bus input (ground/positive seeking).

Заранее спасибо

[crockodile]

seek прием сигнала тут, имхо (seek исп. как "поиск/прием" сигнала)

[unibelle]

Спасибо, crockodile