Dynon SkyView HDX - Electrical Installation

SkyView HDX Display Installation and Configuration
SkyView HDX System Installation Manual - Revision E 4-9
4.3 Electrical Installation
Use this section in conjunction with the information contained in Section 25 Appendix C:
Wiring and Electrical Connections (notably Figure 141 on page 25-9). The wires and wire
colors in this section refer to the wires on the included SkyView Display Harness (SV-
HARNESS-D37).
Some wires that are used in SkyView harnesses are identified with secondary
color stripes. Exposing these striped wires to solvents or abrasives can cause
the stripe color to wear off. Handle these wires with care.
4.3.1 Power Input
SkyView displays have a primary power input that is compatible with 12 volt and 24 volt
electrical systems (10 to 30 volts DC). There are two unterminated solid red primary
power input wires (to reduce current loading in each wire - these are not for redundancy
and both must be connected to the same power source) and two unterminated solid black
primary ground wires.
Ensure that there is an appropriately rated circuit breaker or replaceable fuse
on the primary power input.
4.3.2 Grounding
Ensure that all external devices that interface with SkyView have a common ground with
SkyView. If a device does not share ground with SkyView, it may not communicate
properly.
4.3.3 Airplane Master Contactor / Relay Considerations
If your aircraft is equipped with a master contactor or a relay that is operated by the master
switch, it is imperative that the coil of the contactor or relay is protected by a diode to
reduce the voltage spike seen when the contactor is turned off. Without this diode, the
aircraft system can see spikes above 100V, which can damage Dynon Avionics
equipment and other avionics.
While some contactors have this diode internally, many do not. Please verify the
existence of this diode before operating your Dynon Avionics equipment. Any diode that
is rated for more than 1A, and more than 50V, is suitable.
4.3.4 SV-BAT-320 Connection and Operation Rules
SkyView displays have an external backup battery - SV-BAT-320. The SV-HARNESS-
D37 harness has a connector that mates with the connector on the SV-BAT-320. Simply
connecting the display to the battery enables the use of the SV-BAT-320; no additional
configuration is required.
In the event of an electrical failure that causes SkyView to run on the SV-BAT-320, the
SV-BAT-320 supplies power to the SkyView display it is connected to, along with any
devices powered by the SkyView. A fully charged SV-BAT-320 can keep most SkyView
systems operating for at least 60 minutes. The SV-BAT-320 does not supply (backup)
power to the following SkyView system devices: