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General| Brand | Northern Airborne Technology |
|---|---|
| Model | 247 |
| Category | Amplifier |
| Language | English |
Information in this section consists of product description, design features and specifications.
Details the multipurpose mixing amplifier for Aural Warning, Cockpit Voice Recorder, or aircraft audio signals.
Describes standard configuration for driving non-DC biased loads and 001 model features.
Covers power supply, input impedance, output impedance, frequency response, gain, output power, and mic bias.
Details dimensions, weight, enclosure material, and mounting method for the unit.
Lists operating temperature, altitude, and RTCA/DO-160C environmental categories.
States FAA approval status, TSO-C50c, and RTCA/DO-214/DO-160C compliance.
Information in this section consists of unpacking, inspection, installation, and post-installation procedures.
Instructions for carefully unpacking the equipment and inspecting it for shipping damage.
Details the 2-year warranty terms and conditions for Northern Airborne Technology Ltd. products.
States that maintenance is 'on condition' only and no periodic maintenance is required.
General notice about following installation instructions from the latest manual issue.
Warns about potential hearing damage from high volume settings and advises caution during tests.
Advises against bundling specific cables and positioning near magnetic fields to avoid interference.
Specifies wire selection, shielding, grounding, and power supply requirements per AC43.13-1B.
Details mounting requirements, axis, screws, and bonding to the aircraft ground plane.
Explains the 3 separate power/ground inputs and maximum current draw per circuit.
Lists the pin assignments for the 44-pin connector for inputs, outputs, power, and grounds.
Specifies voltage/resistance and power-on checks to verify correct installation.
Explains how to remove the cover to access internal adjustments and handle static sensitive devices.
Lists required installation kit parts like D-sub socket and contacts.
References drawings for outline, interconnect, and environmental qualification form.
Information in this section consists of the functional and operational procedures for the amplifier.
States the unit has no operator accessible controls and requires qualified personnel for internal adjustments.
