Northern Airborne Technology AMU50-001 - Manual (Page 6)

AMU50-001 Audio Management Unit
SM76 Installation and Operation Manual
Section 1 Rev: 1.03
Issue 1 Page 1-3
ENG-FORM: 800-0116.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
In Emergency mode all ACPs are deactivated, and only User 1 and User 2 maintain a limited amount of
functionality. In this mode, User 1 will be able to listen to COM1, NAV1, Direct1, Direct2, Direct3 and all
alerts at a fixed level, and transmit on COM1. User 2 will be able to listen to COM2, NAV2, Direct1,
Direct2, Direct3 and all alerts at a fixed level, and transmit on COM2. Both User 1 and User 2 will have
keyed intercom audio at a fixed level.
Emergency mode disables the Digital Signal Processing software and provides the above functionality via
analog technology.
1.4 Specifications
1.4.1 Electrical Specifications
POWER
NORM and EMERG Power Inputs (NORM +28 VDC Power, EMERG +28 VDC Power)
Normal Operating Conditions:
Nominal input voltage 28.0 Vdc
Maximum input voltage 30.3 Vdc
Minimum input voltage 22.0 Vdc
Emergency input voltage 18.0 Vdc
Abnormal Operating Conditions:
Maximum input voltage 32.2 Vdc
Minimum input voltage 20.5 Vdc
Maximum Current: 2.6 A @ 28.0 Vdc with 6 ACPs connected and lights at maximum
Power Outputs for ACP (ACP 1 PWR thru ACP 6 PWR)
Quantity: Six
Output Voltage: 25.5 Vdc (Nominal) with a +28.0 Vdc input to the AMU50
Maximum Current: 0.25A @ 25.5 Vdc
Power Output for RM01 (RM01 PWR)
Quantity: One
Output Voltage: 5 Vdc ±10% (Nominal)
Maximum Current: 0.10 A @ 5 Vdc
INPUTS
Audio Inputs
MIC Inputs
Three microphone impedances available: User 1 and User 2 microphone impedances must be
the same; User 3 through User 7 microphone impedances are independently configurable.
Quantity Seven, configured through DevCs application.
Gain Independently adjustable from -9 dB to +6 dB of nominal input
level, +/- 1dB with 15 steps of adjustment