Dynon Avionics EFIS-D10A Pilots Users Guide - Manual (Page 10)

EFIS-D10A Pilot’s User Guide 2-1
2. PRODUCT OVERVIEW
This section provides a general overview of the various parts of the EFIS-D10A as well as a theory of operation. The
information in this section serves as a reference only and helps familiarize you with the inner workings of the unit. It
should not be used for diagnostic or reparative work.
EFIS-D10A Hardware
The EFIS-D10A uses solid-state sensors to provide accurate and reliable information about your flying environment in
an easy-to-use interface.
POWER
The EFIS-D10A requires between 10 and 30 volts DC for operation and has inputs for an external backup power supply
and a keep-alive voltage. It is acceptable to have the EFIS-D10A turned on during engine start.
The EFIS-D10A can be ordered with an optional internal battery which allows the instrument to continue to operate in
the event of an external power failure. This lithium-ion battery is rechargeable and is managed by the EFIS-D10A. If the
always-on Keep Alive circuit is connected, the EFIS-D10A continues to charge its internal battery even if the instrument
is turned off. This ensures that your internal emergency battery is always fully charged. Under normal conditions, the
internal battery should have a voltage between 13 and 16.8 volts. When the battery’s voltage drops below 13 volts, the
EFIS-D10A displays a low battery warning. When new, a fully charged internal battery is rated for a minimum of 2
hours of normal operation with the EFIS-D10A. If the EFIS-D10A has switched to its internal emergency battery due to
a power loss in your aircraft, it is advised that you land as soon as possible.