Northern Airborne Technology AA35 - Manual (Page 4)

AA35-001 Audio Mixer Panel
SM25 Installation and Operation Manual
Section 1 Rev: 1.00 Issue 4 Page 1-1
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the
AA35-001 Audio Mixer Panel. All derivative product information shall be contained in the applicable
manual supplement, which may be obtained from NAT as required.
Review all notes, warnings and cautions.
1.2 Product Description
The AA35-001 Audio Mixer Panel is a six channel summing amplifier with independent level control for
each input. It can be used as an expansion panel for existing audio controllers.
The AA35 is also available in remote mount configurations (see Section 1.5)
1.3 Design Features
The AA35-001 Audio Mixer Panel provides six independent channels with differential inputs and balanced
outputs for high common mode noise rejection. Also provided is a composite output. Each channel is
individually adjustable with a 40 dB range. The input audio level is internally selectable by DIP switch to
2.5 or 7 Vrms. Output impedance of each channel is individually selectable via internal jumpers to allow
the connection of an 8 or 600
Ω load.
1.4 Specifications
1.4.1 Electrical Specifications
Input Voltage 27.5 Vdc (nominal)
Input Current 275 mA (nominal)
Lighting 80 mA @ 27.5 Vdc
Input Signals
Channels 6 independent channels
Impedance 4.0 k
Ω +/- 10%
Audio level 2.5 or 7 Vrms. Selectable by DIP switch
Circuitry Type: Differential input for high common mode noise rejection.
Coupling: <-40 dB input to input Crosstalk