Safe, Affordable, Airframe Power for General Aviation and E/A-B Aircraft

The M1428-DV Mini-GPU is a specialized switching-mode power supply designed to provide pilots and aviation maintenance professionals with a portable, affordable source of stable, high-current, noise-free DC power that replicates the in-flight electrical environment. It contains discrete outputs for either 14 or 28-volts DC, selectable by a front panel switch. It only provides one output voltage at a time, switch-selected and indicated by the front panel voltmeter display. The GPU’s intended purpose is to energize an aircraft’s main electrical bus without using the ship’s battery or engine. It will safely provide continuous power for the most delicate electronics and airframe systems up to its full rated output.

The Model M1428-DV comes with two 6′ airframe output cables – one with a yellow SB50 for 14V output, and one with red for 28 volts – to protect from damage due to accidental voltage mismatch. Both output cables have AN2551 3-pin oval plug that connects to the aircraft. For E/A-B connections, the 802-864 yellow to yellow SB50 may be purchased separately.

GPU Features

• Color-coded, keyed SB-50 type output connection to prevent accidental voltage mismatch. (YELLOW designates 12/14 volt compatibility, RED designates 24/28 volt compatibility)
• Dual digital output meters for voltage and amperage (load)
• Front panel status indicator LED
• Programmable auto-shutdown timer and dual USB power ports for mobile device charging
• QuietFiltered™ output for interference-free COM radio operation
• Auto protection/recovery from short circuit, reverse polarity, over voltage/load/temperature

Specifications

The Model M1428-DV provides 28 or 14-volt DC power for

• avionics demonstration and testing
• database and firmware updates
• flight planning and cockpit procedures training
• troubleshooting & maintenance
• battery top-off charging
• powered pre-flight inspections

IMPORTANT DISCLAIMER & OPERATING LIMITATIONS

Audio Authority® authorizes this device for use ONLY by aviation professionals, such as licensed pilots and maintenance technicians, knowledgeable about their aircraft electrical system and batteries. The operational concepts, recommendations, and instructions presented in our manuals are necessarily general and make assumptions that do not apply to every aircraft, and may not be correct for your particular aircraft. Incorrect use of this device has the potential to damage the GPU and/or aircraft components. It is the operator’s responsibility to read completely and fully understand the included manual, plus those sections of the Aircraft Flight Manual and Maintenance Manual that pertain to their aircraft’s electrical system design, to determine the appropriate use of this, or any, external power source. If you cannot do this, do not use this product. Instead, consult the airframe manufacturer or a technician familiar with your specific aircraft type and configuration before connecting the GPU to your aircraft.