Northern Airborne Technology AA95-766 - Manual (Page 9)

SM95-766 Rev. 2.00 AA95-766 Single Channel Audio Controller Manual
Impedance 1
k Ω ±10% for receive inputs
1 k Ω ±10% for copilot and passenger mic inputs
(150 Ω amplified dynamic Industry standard 'carbon
equivalent' type. 250 mVrms for rated output)
5
±1 Ω for pilot mic input (5 Ω dynamic Military
M87 or equivalent, 0.1 to 1.0 mVrms 250 uVrms
for rated output)
1.3 k
Ω ±10% for Direct Audio input
Circuitry Type All are single ended inputs.
Coupling <-50 dB
Key lines Pilot & copilot transmit PTT
Rear hand mic transmit PTT
Pilot & copilot ICS PTT
Output Signals:
Quantity 6 Headphone outputs
6 Transmitter mic outputs
5 Transmitter keyline outputs
Headset Rated level 12.3 Vrms or 250 mW (24 dBm) into 600 Ω
Circuitry Type Single-ended, except for phones, which are
balanced.
Freq. Response
Sidetone <6 dB from 370 Hz to 2800 Hz
Receive inputs <6 dB from 370 Hz to 2800 Hz
Intercom <6 dB from 350 Hz to 2000 Hz
Distortion <10% THD @ rated power output
Audio Noise Level >50 dB down from rated output (no signal)
Coupling <-50 dB
Output Regulation at 400%
and 75% of rated load. <10% distortion / ∆3 dB max of rated output
power
Keylines Transmit key is active low
Intercom keyline is active low
Dec 06, 2004 Page 1-3
ENG-FORM: 800-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.