Installation Guide

SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration
SkyView System Installation Guide – Revision AK (draft) 16-7
Electrical Installation
Use this section in conjunction with the information contained in Appendix C: Wiring and
Electrical Connections (notably Figure 250 on page 24-9).
Power Input
When the voltage supplied to the transceiver module is below 11V, the transmit
power will be reduced below the nominal output of 6 watts.
The SV-COM-X25/X83 is compatible with 12 volt and 24 volt systems (10 to 30 volts DC). The
SV-COM-760 is compatible only with 12 volt systems. Power input is connected to the
transceiver module and the SV-COM-PANEL. See wiring diagrams and pinouts for details. Note
that on the transceiver modules 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 transceiver
and use BOTH Pins 19 and 22 for GROUND to the transceiver.
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 an SV-COM-PANEL display are SkyView network
connectors. They have identical pinouts and are electrically connected inside the SV-COM-
PANEL (i.e., they are completely interchangeable). Installers may use either connector or both
connectors in SkyView installations. Using both 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 124 on page 24-10 for SkyView Network Connector pinout information.
Note that these connectors are not serial port connectors.