Northern Airborne Technology ACP51-100 - Manual (Page 22)

ACP51-100 DACS Audio Control Panel
SM81 Installation and Operation Manual
Section 3 Rev: 1.00 Issue 1 Page 3-1
ENG-FORM: 806-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 3 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the ACP51-100 DACS
Audio Control Panel (ACP51).
The ACP51 is an Audio Control Panel for a communications management system such as the Northern
Airborne Technology Ltd Digital Audio Control System (DACS).
The faceplate of the ACP51 supports replaceable legends for the transceivers. This enables the installing
agency to change the names of the radio controls to match the radios installed on the aircraft.
The illumination of the ACP51 faceplate is linked to the aircraft dimming buss, and any increases or
decreases in illumination will be relative to the selected lighting mode.
The ACP51-100 has NVIS Green A faceplate backlighting and NVIS Green B annunciators.
3.2 General Information
The ACP51 is part of a communications management system (such as the Northern Airborne Technology Ltd
DACS) that distributes and controls all the audio in an aircraft.
3.2.1 Operational Criteria
It is important to be aware that each unit may have different functions depending on how the system has
been configured during installation. Normally the pilot and copilot will be designated User 1 and User 2
respectively.
Note: Confirm the specific criteria associated with this installation with your installing agency.
3.3 Controls and Indicators
3.3.1 Built-In Tests (BITs)
Note: For visual confirmation of the following tests, the system must be in the NORM mode, and the
Transmit selector switch must be set to select a transceiver (i.e. in any position other than ICS).
3.3.1.1 Power-Up Built-In Test (PBIT)
On power-up, the ACP51 runs a PBIT to confirm correct operation of the unit. When power is first applied,
all indicators will illuminate for a period of approximately 3 seconds.
If the ACP51 has not established connection to other units in the communications management system
three seconds after the power is applied, the ACP51 indicators will extinguish until connection is achieved.