Northern Airborne Technology AA20 - Manual (Page 11)

AA20 Series PA/Siren System
SM33-1 Installation and Operation Manual
Section 2 Rev: 1.00 Issue 4 Page 2-4
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
If the siren does not suit the specific requirements of a given installation, the following adjustments are
available:
1. Base tone setting - potentiometer marked TONE
2. Sweep rate setting - potentiometer marked RATE
These controls are accessible through holes on the left side of the unit, as shown in Figure 1 below.
Siren Rate Siren Tone Master Level
Figure 1: Adjustments
2.6 Accessories Required But Not Supplied
Installation kit p/n AA20-IKC (crimp) is required to complete the installation. The kit consists of the
following:
Quantity Description NAT Part No.
1 D-min 25 Socket Housing 20-21-025
25 MS Crimp Socket 20-26-901
1* Jack Screw Set 20-27-002
1* Lock Clip Set 20-27-004
1 25 Pin Connector Hood 20-29-026
* Use as required.
2.7 Installation Drawings
The information presented in this manual is for reference purposes only, and is intended to provide
general information that can be used by the installer/technician to gain a fundamental understanding of
the product. It is not intended to cover all variations of the AA20 Series audio controllers. Drawing
packages for specific AA20 units can be requested from NAT by contacting the Product Support
Department.
ENG-FORM: 805-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.