SM69 Rev. 4.00

AA12S Series Compact Audio Controller Manual

Bidirectional Signals

 

ICS TIE Channel:

 

Quantity

1

Rated level

340 mVrms nominal (170 to 680 mVrms)

Impedance

2 kOhm ±10 %

Circuitry type

unbalanced

Output Signals

 

Phones:

 

Quantity

4 (Pilot, Copilot, 2 Passengers)

Rated level

>5.5 Vrms (>100 mW, RX, ICS and music)

 

>0.7 Vrms (TX sidetone, adjustable)

 

1.5 Vrms nominal (Pilot ISO mode)

 

>0.2 Vrms (Automatic failsafe mode)

Impedance

300 Ohm ±10 %

Circuitry type

transformer, unbalanced

Mics:

 

Quantity

4 (COM1, COM2, COM3 and PA)

Rated level

250 mVrms ±10 %

Impedance

150 Ohm nominal

Circuitry type

direct throughline via relay

Keylines:

 

Quantity

4 (COM1, COM2, COM3 and PA)

Rated level

<1 A

Circuitry type

grounded relay contact

Audio Performance

As per RTCA DO-170 Product Classification 1a except where noted.

* Manufacturers Specification

** Exceeds DO-170 requirement

Rated Output Power (each stereo channel)

100 mW min. into 300 Ω

Audio freq. Response:

 

 

Receive

≤3dB down from 350 - 6000 Hz

Intercom

≤3dB down from 350 - 3000 Hz

ICS Tie

≤3dB down from 350 - 3000 Hz

Music

≤3dB down from 300 - 15000 Hz

 

(Music Bass control at mid setting)

Distortion

≤10%, ≤3 % typical (350 to 6000 Hz)

Input - Input crosstalk

-37 dB max*

 

Input - Output crosstalk

-55 dB max

 

Input - Mic crosstalk

<200 µVrms*

 

 

 

 

Oct 13, 2005

 

Page 1-3

ENG-FORM: 800-0107.DOT

 

 

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