COBHAM DACS User Manual

CONFIDENTIAL AND PROPRIETARY TO COBHAM
Digital Audio Control System
(DACS)
OPERATOR’S MANUAL
REV 1.10
IMPORTANT NOTICE
Chelton Avionics Inc. doing business as Wulfsberg
Electronics Division is responsible for full distribution and
revisions of ICA's (Instructions for Continued Airworthiness).
For inquires regarding the content and currency of this
manual contact Wulfsberg Electronics Division, 6400
Wilkinson Drive, Prescott, Arizona, 86301. Telephone (928)
756-1615 or refer to the following website:
www.wulfsberg.com for more information.
SEALED
2012.03.20 
13:42:07 
-07'00'
Published on
April 26, 2012
These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification
Control Number(ECCN) 7E994. When exporting, diversion contrary to U.S. law is prohibited.

COBHAM DACS Specifications

General

Category	Controller
Manufacturer	Cobham
Operating Temperature	-40°C to +85°C
Type	Data Acquisition & Control System
Interface	Ethernet
Certification	DO-160, MIL-STD-810
Power Supply	28 VDC (typical aerospace standard)

Summary

System Information

ACP Controls and Indicators

ACP Faceplate Illumination

Explains illumination modes (Day, Night, NVG) and legends controlled by the backlighting bus.

Built-In Tests (BITs)

Describes Power-Up Built-In Test (PBIT) and Continuous Built-In Test (CBIT) for ACP operation.

Operational Criteria

Notes that functions may differ based on AMU configuration and user status.

ACP53 Front Panel Controls

Details the various controls on the ACP53 front panel, including volume and selection functions.

Day Mode Illumination

Night Mode Illumination

NVG Mode Illumination

Legends Illumination

Power-Up Built-In Test (PBIT)

Continuous Built-In Test (CBIT)

Transceiver Radio Controls

Transmit Active Indicator

Receiver Radio Controls (ACP53 and ACP54 only)

Mode Control (Users 1 and 2 Only)

Emergency Mode

VOX Control

Transmit Selector Switch

TX/ICS PTT Switch

ISO/CALL Switch

RX/ICS Volume Control

CALL Indicator

ISO Indicator

Isolation (ISO) Mode

Crew/Passenger Talk Groups

Configures talk groups for crew and passengers, and how the ISO/CALL switch operates.

ISO/CALL SWITCH

Explains the function of the ISO/CALL switch for crew and passenger ACPs.

Call Priority

Transmit Features

User Priority

Restricts transceiver access to a single user when keyed for transmission.

Transmit Time-Out

Feature to prevent stuck microphone by overriding transmit after a set duration.

Aural Alerts

Remote Alert Cancel (not on ACP)

Allows cancellation of cancelable alerts triggered by the AMU via a remote switch.

Remote Alert Inhibit (not on ACP)

Other Remote Switches (not on ACP)

ACP53 Specifications

Electrical Specifications

Details input power requirements and lighting specifications for the ACP53.

Physical Specifications

Provides dimensions, weight, and mounting details for the ACP53 unit.

Environmental Specifications

Outlines operating temperature, altitude, humidity, shock, and vibration limits.

Abbreviations and Acronyms