Northern Airborne Technology AA95-766 - Manual (Page 8)

AA95-766 Single Channel Audio Controller Manual SM95-766 Rev. 2.00
high ambient noise conditions by rejecting airframe and wind noise, and passing only
voiceband information.
All audio, except the S/T of the radio in use and the DIRECT AUDIO input signal, is
muted during transmit for clarity. ICS operation allows transmit during any ICS mode by
using the transmit PTT switch.
All switches, relay contacts and external connections are gold plated for maximum
reliability. Switches and relays are sealed. G10-FR flame retardant circuit boards are
postcoated for maximum moisture resistance and corrosion prevention. Relays are
sealed, high vibration rated (50 g shock), dry nitrogen filled units.
1.4 Specifications
1.4.1 Electrical Specifications
Input Power Reverse and over-voltage protection provided.
Voltage 27.5 Vdc Nominal 0.50 A Max.
Lighting 27.5 Vdc @ 160 mA
Input Signals
Channels 5 aircraft transceiver radio inputs
6 navigational receiver inputs
1 direct audio input (Type 'E')
2.5 Vrms/10 mW input signal for full headset output
1 k Ω input impedance
Type 'E' Input
Direct channel Freq. Response ±6 dB from 370 to 2800 Hz
Distortion 1% THD max
Isolation/crosstalk 65 db min
Rated Level Direct Audio 10 mW (10 dBm) into 600 Ω
Signal/noise ratio 67 db min. or less than 5 mV into 600 Ω
Quantity 13 receive channels
7 mic channels
Audio level 2.5 Vrms for receiver inputs
0.25 Vrms for copilot and passenger mic inputs
0.25 mVrms for pilot mic input
2.5 Vrms for direct audio input
Page 1-2 Dec 06, 2004
ENG-FORM: 800-0106.DOT
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