Dynon Avionics SkyView System Installation Guide - Manual (Page 309)

SV-COM-X83 Installation, Configuration, and Testing
SkyView System Installation Guide – Revision S 17-7
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).
Power Input
When the voltage supplied to the SV-COM-X83 is below 11V, the transmit power
will be reduced below the nominal output of 6 watts.
SV-COM-X83 is compatible with 12 volt and 24 volt systems (10 to 30 volts DC). Power input is
connected to the SV-COM-T8 and the SV-COM-PANEL. See wiring diagrams and pinouts for
details. Note that on the SV-COM-T8 there are two pins for POWER input (Pins 24 and 25) and
two pins for GROUND (Pins 19 and 22). Use BOTH Pins 24 and 25 for POWER input to the SV-
COM-T8 and use BOTH Pins 19 and 22 for GROUND to the SV-COM-T8.
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 pinout
information.
Note that these connectors are not serial port connectors.