Anodyne Electronics Manufacturing AA83-001 Especificaciones descargar pdf (Pagina 27)

AA83-001 InterMUSIC™ Stereo Intercom System

SM09-2A Installation and Operation Manual

April 18, 2012 Rev: 5.00 Page 3-5

ENG-FORM: 806-0100.DOTX

CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.

3.3.7 Muting Logic

When transmitting, any music will be muted quickly, and will slowly return when transmission is

completed. Music will also be muted when ICS or RX functions are active. The degree of muting is set

at the time of installation. The relative volume of the music can be changed from the front panel by the

knob marked with a musical note.

Below is a simple chart to aid in understanding audio switching in the NORMAL Operation mode.

The following terms are used:

'Active' - Function being used.

'Muted' - Functions that are overridden by the active condition.

'Idle' - Functions that are not active, but still available for use.

pp Affect on other functions pp

Active featureoo

Music

ICS

Pilot TX

Copilot TX

Musicoo

Active

Idle

ICSoo

Muted

Active

Idle

RXoo

Muted

Idle

Active

Idle

Pilot TXoo

Muted

Idle

Active

Muted

Copilot TXoo

Muted

Idle

Active

3.3.8 Automatic Fail-safe

In the event of a power failure, automatic fail-safe operation will be activated. It can also be enabled by

pulling the AA83-001 circuit breaker. Fail-safe mode routes the pilot’s phones, mic audio, and mic PTT

directly to the COM radio.

During transmit mode, the pilot mic is directly connected to the transceiver mic. Mic bias is provided by

the transceiver, not the AA83-001. The pilot TX keyline is directly connected to the transceiver. The

sidetone audio is directly connected from the audio source to the pilot phones.

During receive mode, receive audio is directly connected from the audio source to the pilot phones. In

both modes, copilot and passengers have no ICS, music, sidetone, or receive functions.

Note: In Automatic Fail-Safe mode, the receive/sidetone levels may require adjustment at the audio

source.

The pilot should confirm that all aspects of Automatic Fail-Safe operation are working before

accepting the aircraft into service.

End of Section 3.0

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