Dynon Avionics SkyView System Installation Guide - Manual (Page 288)

SV-COM-C25 Installation, Configuration, and Testing
16-6 SkyView System Installation Guide - Revision S
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).
Power Input
SV-COM-C25 is compatible with 12 volt and 24 volt systems (10 to 30 volts DC). Power input is
connected to the SV-COM-425, which then supplies power to the SV-COM-PANEL via the 5-wire
cable between the two units. See wiring diagrams and pinouts for details.
Audio Signal Grounding
Ensure that audio input and output grounds terminate at a single point - typically the intercom
or audio panel. Do not connect an audio input or output ground to aircraft frame ground or a
power or data ground. You should run dedicated wires from audio devices to the single point
audio input and output ground.
Audio Shielding
Shielded cable must be used for all audio connections. The shield should be connected to
ground only at the single point audio ground.
SkyView Network Connectors
The two D9 connectors on the back of a SV-COM-PANEL display are SkyView network
connectors. They have identical pin-outs and are electrically connected inside the SV-COM-425
(i.e., they are completely interchangeable). Installers may use either connector or both
connectors in SkyView installations. Using both of these connectors allows installers to “daisy-
chain” another SkyView Network module (such as the SV-EMS-22X) that may be co-located
behind the panel. Reference Table 76 on page 22-9 for SkyView Network Connector pin-out
information.
Note that these connectors are not serial port connectors.
Electrical Connections
Harness Construction
Because the SV-COM-C25 (SV-COM-PANEL connected to SV-COM-425) can be mounted in a
variety of locations, the harness length requirements will vary from airplane to airplane. Thus,
Dynon Avionics does not supply pre-manufactured harnesses for the SV-COM-C25. Instead,
your SV-COM-C25 includes connectors and pins to generate a wide variety of harness
configurations. Refer to the sections below for detailed wiring information.