Aircraft Audio and Radio Management Systems

Aircraft Passenger and Cargo Address System

As an add-on to the Audio and Radio Management solution, Cobham provides a selection of Passenger and Cargo Address Systems meeting the requirements for civil and military aircraft

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Cabin Audio and Interphone System (CAIS)

The Cabin Audio and Interphone System consists of an ARINC 560 Passenger Address Amplifier (PAA) interfaced with its Digital Passenger Announcement System (DPAS), customized attendant handsets and certified loudspeakers, as well as the Audio Management Unit (AMU) and the passenger entertainment system.

Each PAA can support 60 W output power on loudspeaker network in the cabin. This allows the pilots and attendants to make announcements (PA mode) and to talk to each other on two levels of priority (CALL and EMER modes) when using the optional handsets. The system also provides an intercom between cargo operators (ATT mode) through the AMU. Additionally, the PAA also includes a chime sound generator priority management module, and a built-in-test module which can be interfaced to the Centralized Diagnostic System (CDS).

The DPAS broadcasts announcements in various languages and music to passengers. It allows storage and swift, easy broadcast of high-quality sound data.

Public Address Amplifier System (PAAS)

The Public Address Amplifier System consists of an ARINC 715 Public Address Amplifier (PAA), optional handsets, certified loudspeakers. It is interfaced with the Audio Management Unit (AMU).

The PAA can provide 120 W of audio power to a set of cargo loudspeakers and 22 W to cockpit/lavatory loudspeakers. It can support x18 loudspeakers (8 ohms) in the cabin and 3 in the cockpit. This allows the pilots and the cargo operators to make public announcements (PA mode) and to talk to each other on two levels of priority (CALL and EMER modes) when using the optional handsets. The system also provides an intercom between cargo operators (ATT mode) through the AMU. Additionally, the PAA includes a chime sound generator, a priority management module and a built-in-test module which can be interfaced to the Centralized Maintenance System (CMS) through ARINC 429.

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