Northern Airborne Technology AA12 - Manual (Page 13)

SM21 Rev. 4.10 AA12 Compact Audio Controller Manual
2.3.5
Mechanical Mounting
For the standard AA12 units, mounting is accomplished in a standard Dzus rack or rail
assembly with a clearance opening of 5 inches, a full width dimension of 5.75 inches,
and a total of 1.125 inches of rail height. Verify that adequate rear cable clearance is
left when planning console installations.
The AA12T variants are tray-mounted units. The required cutout dimensions are given
on drawing AA12T\IKC\922-0 at the end of this section.
2.3.6
Post-Installation Checks
If any preset requires adjustment, be sure this is carried out before the aircraft leaves,
and that the unit and its mating connector are secured before departure. Make all
required log book entries, electrical load, weight and balance amendments and other
paperwork as required by your local regulatory agency.
2.3.6.1 Voltage/resistance checks
Check the following:
Do not attach the AA12 until the following conditions are met:
P101, pin <1> for +14/28 Vdc relative to ground.
P101, pin <14> for continuity to ground (less than 0.5 Ω).
P102, pin <5> for +14/28 Vdc Lights relative to ground.
P102, pin <17> for continuity to ground (less than 0.5 Ω).
Review the installation and perform continuity checks from the AA12 to the applicable
source/destination connections that are interfaced to the unit.
2.3.6.2 Power On checks
Check the following:
Install the AA12 and power up the systems.
Turn on the Audio Controller.
Verify normal operation of all intercom and radio functions, including NORMAL and ISO
operations from the pilot position. For more information refer to Section 3.0 for specific
operation details.
Sep 9, 2004 Page 2-3
ENG-FORM: 805-0106.DOT
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