COBHAM AA95-1000TSO Скачать руководство пользователя страница 15 | Manualshive

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COBHAM AA95-1000TSO Скачать руководство пользователя страница 15

AA95-1000TSO Single Channel Audio Controller

Installation and Operation Manual

Rev 1.01

CONFIDENTIAL AND PROPRIETARY TO COBHAM

Page 3-3

3.3.3

ICS Functions

3.3.3.1

ICS Modes

Intercom audio may be implemented in three modes: LIVE (on constantly), VOX (voice activated), or
KEYED (active only when switched by ICS PTT switch). It is common to use the LIVE mode during
ground operations, start-

up, etc. and to use VOX or KEYED operation if conditions are so noisy that ‘pilot

fatigue’ will result.

LIVE

(Hot Mic Operation)

ICS mode switch (orange switch bat) set to the up (VOX) position and the VOX squelch control set to the
full counter-clockwise position.

KEYED ICS

(PTT Operation)

ICS toggle switch (orange switch bat) set to the down (KEY) position. Keyed ICS is inherent to the pilot
and copilot microphone circuits only.

VOX

(Voice Activated)

ICS toggle switch (orange switch bat) set to the up (VOX) position. Set the ICS VOX Squelch control fully
counter-clockwise and then slowly rotate clockwise until the intercom just becomes quiet. This setting will
vary with ambient noise conditions, and the quality and number of microphones connected in the system.

3.3.3.2

General ICS Functions

Passenger ICS audio is LIVE when the controller is in the LIVE or KEYED mode of ICS operation. It is
VOX triggered when that mode is selected. The passengers are always LIVE unless interrupted by an in-
line PTT cord, or if the controller is set for VOX operation. Passenger and observer (copilot) operations
can be optimized by using in-line PTT type cord assemblies designed for use with NAT audio controllers.
All ICS audio is controlled by the front panel ICS volume control and may be varied to suit conditions.
The ICS VOL control provides adjustment from approximately 1% to full output.

The mode switch (red switch bat) is used to select between NORMAL and PILOT ISO/EMR modes. In
the NORMAL position (down), all operations of the ICS are functional as described above. When the
switch is in the pilot isolate/emergency position (PILOT ISO/EMR), the pilot is isolated from the rest of the

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Содержание AA95-1000TSO

Страница 1: ...Aerospace Communications is responsible for full distribution and revisions of ICA s Instructions for Continued Airworthiness For inquiries regarding the content and currency of this manual contact W...

Страница 2: ...L AND PROPRIETARY TO COBHAM Page ii Prepared By Ken Marshall Checked By John Peterson Approved By John Markham REVISION RECORD Revision DCA Description Date 1 00 W13194 Initial Release Jul 10 2013 1 0...

Страница 3: ...Limitations 2 1 2 3 Installation Procedures 2 1 2 3 1 Warnings 2 1 2 3 2 Cautions 2 1 2 3 3 Cabling and Wiring 2 2 2 3 4 Legend Installation 2 2 2 3 5 Post Installation Checks 2 3 2 4 Adjustments and...

Страница 4: ...e controller allowing sidetone ICS audio and RX audio to be independently set Boom mic support is provided for the pilot co pilot and rear pilot with both ICS and XMIT functions via cyclic or yoke swi...

Страница 5: ...hannel Audio level 2 5 Vrms for receiver inputs 0 25 Vrms for mic inputs 0 34 Vrms for ICS tie input 2 5 Vrms for direct audio inputs Impedance 1 k 10 for receive inputs 100 10 for mic inputs 1 6 k 10...

Страница 6: ...rtion 3 dB max of rated output power 75 of rated load Annunciators Green LED will light for transmit operation Green LED will light for CALL or ISO operation 1 4 2 Physical Specifications Height 1 88...

Страница 7: ...Single Channel Audio Controller Installation and Operation Manual Rev 1 01 CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 1 4 1 4 4 Product Approval FAA TSO C50c RTCA DO 170 Class Ia RTCA DO 160 A C Sec...

Страница 8: ...riodic maintenance of this product is not required 2 3 Installation Procedures 2 3 1 Warnings WARNING High volume settings can cause hearing damage Set the headset volume control to the minimum volume...

Страница 9: ...secured and that it shares no path with any electrically noisy aircraft accessories such as blowers turn and bank instruments or similar loads Power to this unit must be supplied from a separate circu...

Страница 10: ...ce for the pilot Adjustment of the individual radio RX levels should be set first and then the front panel RX master volume control b Unusual buzzes hums or other background audio are symptomatic of m...

Страница 11: ...5 2 The S T LEVEL trimpot adjusts the internal gain of the sidetone of the selected transceiver from the front panel in the user s headphones The VOX LEVEL trimpot sets the sensitivity level for the f...

Страница 12: ...50 50 MS Crimp Socket 20 26 901 1 Jack Screw Set 20 27 002 1 Lock Clip Set 20 27 004 1 50 Pin Connector Hood 20 29 051 D37SL IKC consists of Quantity Description COBHAM No 1 D min 37 Socket Housing 20...

Страница 13: ...els are adjustable on the front panel All audio except the sidetone of the radio in use and the directly connected DIRECT AUDIO input signal see Section 3 5 1 is muted during transmit for clarity ICS...

Страница 14: ...cted on When set to the center off position the respective NAV receive audio is selected off The master receive volume control RX VOL adjusts all receive audio concurrently from 1 to full It is import...

Страница 15: ...counter clockwise and then slowly rotate clockwise until the intercom just becomes quiet This setting will vary with ambient noise conditions and the quality and number of microphones connected in th...

Страница 16: ...adequately for emergency operation Any selected receive audio is switched to the primary user pilot in the emergency mode but not to any passengers in the system Audio level will be lower than in NOR...

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