Northern Airborne Technology AA83-100 - Manual (Page 32)

AA31 ICS Mode Controller Manual SM10 Rev. 4.10
Selecting REAR ISO isolates the Pilot and Co-pilot from the Rear position(s). The ICS tie
lines of the Pilot and Co-pilot Audio Controllers are connected together, but there is no
connection between the Front (Pilot or Co-pilot) and Rear Audio Controller(s).
Selecting ALL COMMON connects all ICS positions to each other. All Audio Controller
ICS tie lines are connected together.
3.3.2 Annunciators
The annunciators are LEDs that illuminate to indicate the current call or isolation status
of the unit.
The REAR CALL left annunciator illuminates amber when a REAR CALL LEFT signal is
activated.
The ISO Annunciator illuminates amber when any ICS ‘Isolate’ condition (ALL ISO,
PILOT ISO or REAR ISO) is selected on the intercom function selector.
The ALL COMMON annunciator illuminates green when ALL COMMON (no isolation) is
selected on the intercom function selector.
The REAR CALL right annunciator illuminates amber when a REAR CALL RIGHT
signal is activated.
End of section 3
Page 3-2 Feb 4, 2005
ENG-FORM: 806-0106.DOT
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