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2.4.4
Mounting
The ACP51 may be mounted in any orientation.
The ACP51 is provided with four Dzus fasteners for rack mounting. No shock or vibration isolators are
required.
The ACP51 must be mounted to a clean metal surface which is electrically bonded to the aircraft ground
plane. The unit is finished with a coating that prevents corrosion. This coating is electrically conductive
and should not be removed for electrical bonding.
2.4.5
Legend Installation
Note:
The legends for TX channel labelling must be consistent on each ACP5x within a
communications management system (i.e. on each aircraft.)
Each ACP51 requires a set of legends, either purchased individually (Part no. 55-06-xxxx) or as a legend
kit (Part no. ACPLK-xxx). Each kit consists of a number of printed legends and blanks (to suit customer
requirements), and each legend comes complete with a black gasket, either attached or loose in the bag.
For additional information, see section 2.6.2.
Legend
Gasket
If it is necessary to remove or replace a legend, carefully lever the legend away from the faceplate, and
insert the new or replacement legend as described above.
If the faceplate is damaged in any way during this process, light leakage may
occur, which will necessitate returning the unit to the manufacturer for repair
2.4.6
Custom Designation Cross-Reference List
A Custom Designation Cross-Reference List is included in Section 2.7. When installed as part of a
Northern Airborne Technology Ltd DACS, this form is used to cross-reference the signal designations
from the AMU50.
2.4.7
Post Installation Checks
2.4.7.1
Voltage/Resistance Checks
Do not attach the ACP51 until the following conditions are met.
Check the following:
Section 2 Rev: 1.01
ENG-FORM: 805-0121.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
ACP51-100 DACS Audio Control Panel
SM81 Installation and Operation Manual
When installing the legends for the first time, each legend must be fitted
with a black gasket to ensure uniformity of legend lighting. The gasket
fits into place on the back of the legend, but is easily dislodged or
damaged. Take particular care to ensure that it is properly positioned
before snapping the legend fully into place. If a replacement gasket is
required, the whole legend must be ordered.
CAUTION:
or replacement.
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