Anodyne Electronics Manufacturing AA82 InterMUSIC Installation And Operation Manual - page 11
AA82 InterMUSIC™ Stereo Intercom System
SM09-1 Installation and Operation Manual
April 16, 2012 Rev: 2.00
Page 2-3
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
2.4.5
Post Installation Checks
2.4.5.1
Voltage/Resistance Checks
Do not attach the AA82-xxx until the following conditions are met.
Check the following for the AA82-001:
a) Check pin 1 for +11 to +32 Vdc relative to ground.
b) Check pin 14 for continuity to ground (less than 0.5
:
).
Check the following for the AA82-060:
a) Check pin 1 for +11 to +32 Vdc relative to ground.
b) Check pin 16 for continuity to ground (less than 0.5
:
).
2.4.5.2
Power On Checks
Power up the aircraft’s systems and confirm normal operation of all functions of the
AA82-xxx. Reference
Section 3 for specific operational details.
a) Check that headsets are installed correctly.
b) To verify proper operation, all functions and levels shall be checked in-flight.
c) Check preset adjustments are completed before aircraft departure.
Upon satisfactory completion of all performance checks, make all required log book entries, electrical
load, weight and balance amendments and other documentation as required by your local regulatory
agency before releasing the aircraft for service.
2.5
Adjustments and Connections
All AA95/AMS4X Audio Controllers used with the AA82 must have the ICS Tie Line and Gain
Modifications installed. This applies to units with a serial number less than 1918.
The AA82-xxx has internal trimpot adjustments accessible through holes in the right and left sides of the
unit. The AA82-060 also has internal jumper settings for music input types. Reference Section 2.5.5 for
jumper settings.
2.5.1
Radio Settings
To achieve correct radio volume settings, check that the headset radio level is acceptable. This
adjustment should be made with the radio volume set to about 50%. Adjust the headset volume control
(if it exists) for something less than full volume, such as 75% (full output on active headsets will give the
worst over-all signal to noise ratio, as it will increase the low level noise floor). Adjust the RX VOL on the
side of the AA82 to a preferred level.
Check that the music is muting at this stage when a radio signal is received. If not, the radio itself set too
low and must be increased at the radio to properly activate the internal muting circuit in the AA82. Once
the radio settings are satisfactory, perform all other adjustments. The RX VOL trimpot sets only the radio
level heard during normal operation and has no effect on any other function, including muting.