8 Manuals

Northern Airborne Technology SM251

Manuals and User Guides for Northern Airborne Technology SM251. We found 1 manuals for free downloads Installation and Operation Manual

Below you will find brief information for Speaker Amplifier 251. This manual provides detailed information on the Model 251 Passenger Speaker Amplifier, a remotely controlled electronic unit designed for aircraft. It covers product description, design features, electrical and physical specifications, installation procedures, operating modes, adjustments, and maintenance. This manual is essential for proper installation and operation.

Key Features

Remote Control
Chime & Ringer Tones
Stereo Input
Monitor Outputs
Speaker Outputs protected
PA Microphone Input
Volume Control
Multiple Audio Inputs (ADF, PSC, TV, etc.)

Passenger Speaker Amplifier 251 Installation Manual + AI Chat & PDF

Pages: 23 Northern Airborne Technology SM251 Installation and Operation Manual

Brand: Northern Airborne Technology Category: Aircraft Size: 945 KB

Languages: English

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Frequently Answers and Questions

What audio inputs does the Model 251 accept?

The Model 251 accepts ADF, PSC, TV, Stereo Left/Right, Brief, and PA MIC audio inputs.

What are the speaker output ratings?

Each speaker amplifier output is rated at 28 Watts into 2 ohms (30 Watts typical) or 49 Watts into 1 ohm.

What is the function of the chime and ringer tones?

The chime tone alerts passengers to changes in the Seat Belt or No Smoking signs, while the ringer tone is for a cockpit-to-cabin intercom system.

What is the power supply requirement?

The power supply requirement is 28 Vdc, with a maximum current draw of 5 amperes.

What are the environmental specifications?

The operating temperature range is -55 to +70°C, with a survival range of -55 to +85°C. The unit can operate up to 70,000 feet altitude and meets RTCA/DO-160C category CL for vibration.