Dynon Avionics SkyView System Installation Guide - Manual (Page 69)

SV-D700 / SV-D1000 / SV-D1000T Installation and Configuration
SkyView System Installation Guide – Revision S 4-7
Electrical Installation
Use this section in conjunction with the information contained in Appendix C: Wiring and
Electrical Connections (notably Figure 124 on page 22-8). 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.
Power Input
SkyView displays have a primary power input that is compatible with 12 volt and 24 volt
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. Reference the Power Consumption Section of the
System Planning Chapter for more information.
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.
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 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 equipment. Any diode that is rated for more than 1A
and more than 50V is suitable. Vans Aircraft part number ES DIODE MASTER is also a suitable
option.
Backup Battery Connection and Operation Rules
SkyView displays have the option of an external backup battery (SV-BAT-320). The display
harness has a connector that mates with the connector on the backup battery. Simply
connecting the display to the battery using this connector enables backup battery functionality.
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 connected SV-
ADAHRS-200/201, SV-EMS-220/221, SV-ARINC-429, and SV-GPS-250 modules. A fully charged