AEM AA24 Series, Installation And Operation Manual

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AA24/AA25 Series Single User Audio Controller
SM18 Installation and Operation Manual
April 14, 2012 Rev: 5.00 Page 1-2
ENG-FORM: 800-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Microphone
Industry standard ‘carbon equivalent’ type
250 mVrms for full output
Amplified dynamic microphone preferred
David Clark M1DC, M3, M4 recommended
(For low Z microphones, AA24-801 or AA25-801 are
recommended)
Indicators Transmit (green LED)
VOX ICS triggered by ICS Tie Line (red LED)
Input Signals:
4 aircraft transceiver radio inputs
5 navigational receiver inputs
2.5 V rms for full output
4.7 k
Ω
input impedance
1 bi-directional ICS tie line
1 Vpp for full output
2.2 k
Ω
input impedance
Keylines Transmit key is active low (33 mA of current)
Intercom key is active low (1 mA of current)
Intercom line NAT ICS tie line compatible 2 k
Ω
input impedance
(340 mVrms level)
Output Signals:
Transmitter
audio lines Non-adjustable, microphone connected directly
to radio. (mic bias supplied by radio)
Transmitter key lines Hard ground output (relay contacts 1 A
Max) Green LED annunciator
Intercom line 340 mVrms into 2 k
Ω
(freq. Response +/- 6 dB from 250 to 4000 Hz)
Headset output 200 mW max. Into 600 ohms (floating output)
300 mW max. Into 150 ohms
Receive channel freq. Re/- 6 dB from 300 to 5000 Hz
Intercom channel freq. Re/- 6 dB from 225 to 5000 Hz
Direct input freq. Re/- 6 dB from 275 to 3100 Hz
Distortion <2% THD
Isolation /crosstalk >60 dB min
Signal/noise ratio 70 dB min