COBHAM DACS Operator's Manual
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COBHAM DACS Operator's Manual

Digital audio control system
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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.
Digital Audio Control System
(DACS)
OPERATOR' S MANUAL
REV 1.10
IMPORTANT NOTICE
Chelton
Avionics
Inc.
doing
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
Published on
April 26, 2012
CONFIDENTIAL AND PROPRIETARY TO COBHAM
business
as
Wulfsberg
2012.03.20
13:42:07
-07'00'

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Summary of Contents for COBHAM DACS

  • Page 1 13:42:07 April 26, 2012 -07'00' CONFIDENTIAL AND PROPRIETARY TO COBHAM 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.
  • Page 2 DACS Digital Audio Control System Operators Manual Prepared By: Checked By: Approved By: Allan prince Zack Pahlman Charles Horkin 2012.03.09 2012.03.13 2012.03.09 17:31:23 -08'00' 17:50:58 16:44:52 -08'00' -07'00' Revisions Rev. ECR No. Date Description of Change 1.10 ECR11065 3-8-12 ECR 11065: Rewrote Section 3.5.1 1.00...

  • Page 3: Table Of Contents

    DACS Digital Audio Control System Operators Manual Table of Contents Section Title Page Introduction....................1 System Information ................. 1 ACP Controls and Indicators ..............3 ACP Faceplate Illumination ..............4 3.1.1 Day Mode Illumination..............4 3.1.2 Night Mode Illumination..............4 3.1.3 NVG Mode Illumination..............5...
  • Page 4 DACS Digital Audio Control System Operators Manual 3.4.9 ISO/CALL Switch ................10 3.4.10 RX/ICS Volume Control ............… 11 3.4.11 CALL Indicator ................11 3.4.12 ISO Indicator ................11 Isolation (ISO) Mode................12 3.5.1 Crew/Passenger Talk Groups ............12 3.5.2 ISO/CALL Switch ................12 3.5.3 Call Priority................… 13 Transmit Features ................13...

  • Page 5: Introduction

    Information in this manual consists of the functional and operational procedures for the COBHAM Digital Audio Control System (DACS). System Information DACS is a communications management system that distributes and controls all the audio in an aircraft. This overview provides a basic understanding of how the system functions.
  • Page 6 DACS Digital Audio Control System Operators Manual Figure 1: Typical Digital Audio Control System Rev: 1.00 Page 2 DACS_813-0100 CONFIDENTIAL AND PROPRIETARY TO COBHAM These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification...

  • Page 7: Acp Controls And Indicators

    DACS Digital Audio Control System Operators Manual ACP Controls and Indicators ACP53-xxx The ACP53-xxx is an Audio Control Panel for the DACS. The ACP51-xxx and ACP54-xxx are variants of the ACP53-xxx.  ACP51-xxx Rev: 1.00 Page 3 DACS_813-0100 CONFIDENTIAL AND PROPRIETARY TO COBHAM These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification Control Number(ECCN) 7E994.

  • Page 8: Acp Faceplate Illumination

    DACS Digital Audio Control System Operators Manual ACP54-xxx All ACP installed features operate in the same manner unless otherwise noted in the text of this manual or the feature is unique to a particular model. The faceplate of the ACP supports replaceable legends for the receivers and the transceivers.

  • Page 9: Nvg Mode Illumination

    DACS Digital Audio Control System Operators Manual 3.1.3 NVG Mode Illumination To enable NVG mode select an external NVG mode switch. The ACP indicators illumination level is constant and at a reduced level compared to the Night mode levels. 3.1.4 Legends Illumination The legends illumination is controlled by the backlighting bus.

  • Page 10: Acp53 Front Panel Controls

    DACS Digital Audio Control System Operators Manual ACP 53 Front Panel Controls 3.4.1 Transceiver Radio Controls The ACP has up to eight Transceiver Receive audio volume controls with interchangeable illuminated labelling to allow selection of suitable legends. Each control is an edge-lit rotary plastic knob that is used to control the volume for a specific transceiver.

  • Page 11: Transmit Active Indicator

    DACS Digital Audio Control System Operators Manual associated transceiver can be adjusted by rotating the knob and the illumination of the triangular arrow will be at maximum. In the off position the knob is retracted (pressed in), the volume is selected to the minimum value (off) and the arrow illumination is minimized or off.

  • Page 12: Mode Control (Users 1 And 2 Only)

    DACS Digital Audio Control System Operators Manual 3.4.4 Mode Control (Users 1 and 2 Only) The mode control is a red three-position locking toggle switch that can be used by Users 1 and User 2 only to select the unit’ s operational mode, NORM (normal), BK-UP (back-up) or EMER (Emergency).

  • Page 13: Vox Control

    DACS Digital Audio Control System Operators Manual In Emergency mode, Users 1 and 2 maintain a reduced level of operation. When In Emergency Mode, User 1 will be connected to COM1, NAV1, Direct 1, Direct 2, Direct 3 and all alerts.

  • Page 14: Transmit Selector Switch

    DACS Digital Audio Control System Operators Manual 3.4.6.4 VOX (Voice Activated) Set the VOX control fully ccw and slowly rotate cw until the intercom just becomes quiet. This setting will vary with ambient noise conditions as well as the quality and number of microphones connected in the system.

  • Page 15: Rx/Ics Volume Control

    DACS Digital Audio Control System Operators Manual 3.4.9 ISO/CALL Switch The ISO/CALL button is a momentary push-button switch that can be used to enter ISO (isolation) mode (crew only) or to call the crew when in ISO mode. For further information on ISO mode, see section 3.4.

  • Page 16: Iso Indicator

    DevCS. Analog selection is primarily intended for interfacing to older legacy intercom equipment. The PIA01 is designed to allow up to 12 additional passengers to share the DACS intercom system on the passenger talk group.
  • Page 17 DACS Digital Audio Control System Operators Manual Within DevCS the configuration of talk groups can be set up in multiple ways. DevCS enables selection of virtually any combination of ACPs to the crew or passenger talk groups. Limitations are:  At least one ACP must be assigned to the passenger talk group.

  • Page 18: Call Priority

    DACS Digital Audio Control System Operators Manual 3.5.3 Call Priority In ISO mode a passenger may use the call switch on their ACP to contact the crew. When the ISO/CALL switch is pressed by a passenger, CALL will be indicated on the crew ACP unit(s).

  • Page 19: Aural Alerts

    ACP. This information is included for information purposes only. Up to eight aural alerts can be configured through the DACS DevCS and can consist of tones, voice messages or a combination of both, played once only or repeated.

  • Page 20: Remote Alert Inhibit (Not On Acp)

    DACS Digital Audio Control System Operators Manual Remote Alert Inhibit (not on ACP) CAUTION: When an Audio Alert Inhibit switch is activated, it is important to be aware that no aural notification generated by the AMU will be given for any alert situation.

  • Page 21: Physical Specifications

    DACS Digital Audio Control System Operators Manual Physical Specifications Height 76.70 mm (3.02 in) maximum Depth 68.07 mm (2.68 in) maximum behind Dzus rail Width 146.56 mm (5.77 in) maximum Weight 0.65 kg (1.42 lbs) maximum Mounting Four Dzus fasteners, 4.76 cm (1.875 in) vertical...

  • Page 22: Abbreviations And Acronyms

    DACS Digital Audio Control System Operators Manual Abbreviations and Acronyms Audio Control Panel Audio Management Unit Built-In-Test BK-UP BacK-UP CBIT Continuous Built-In Test counterclockwise clockwise COMunication DACS Digital Audio Control System DevCS Device Configuration Software EMER EMERgency Flight Engineer Inter-Communication System...
  • Page 23 DACS Digital Audio Control System Operators Manual End of Operator's Manual NOTES: Rev: 1.00 Page 19 DACS_813-0100 CONFIDENTIAL AND PROPRIETARY TO COBHAM These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification...
  • Page 24 DACS Digital Audio Control System Operators Manual NOTES: Rev: 1.00 Page 20 DACS_813-0100 CONFIDENTIAL AND PROPRIETARY TO COBHAM 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.
  • Page 25 DACS Digital Audio Control System Operators Manual NOTES: Rev: 1.00 Page 21 DACS_813-0100 CONFIDENTIAL AND PROPRIETARY TO COBHAM 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.

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