AA34 Series Universal Radio Interface
SM36 Installation and Operation Manual
Section 2 Rev: 1.01
Issue 4
Page 2-3
ENG-FORM: 805-0121.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
2.4.4
Post-Installation Checks
2.4.4.1
Voltage/Resistance Checks
Do not attach the AA34 until the following conditions are met.
Check the following:
a)
(AA34-200, AA34-300 and AA34-301) P101 pin
<1>
for +28 Vdc relative to ground or P101 pin
<2>
for +14 Vdc relative to ground.
b) (AA34-200)
P101
pins
<14>
<15>
and
<23>
for continuity to ground (below 0.5
Ω
).
c)
(AA34-300\301) P101 pins
<8>
<14>
<15>
<20>
<21>
and
<23>
for continuity to ground (below 0.5
Ω
).
2.4.4.2
Power On Checks
Power up the aircraft’s systems and confirm normal operation of all functions of the AA34. Verify normal
operation of all radio functions. Refer to the manual supplied with the mobile radio for specific operation
details.
a)
To verify proper operation, all functions and levels shall be checked in-flight.
b)
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
The AA34 permits many possible interfaces. To prevent loss of communications, ensure that any replacement
unit is configured exactly the same as the one it is replacing.
2.5.1
External Adjustments
The unit is shipped from the factory with all external adjustments set to the normal test levels. Once
installed in the aircraft, it may be desirable to change some of these settings to best suit the local
operating environment. The external adjustments are accessible through the left side and rear of the unit.
