Installation Guide

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SkyView System Installation Guide – Revision AK (draft) 16-1

16. SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration

Do not transmit without an antenna connected. Doing so may damage your

transceiver module

SV-COM-760, SV-COM-T25 and SV-COM-T83 Introduction

The SV-COM-760 is a 25kHz transceiver intended for the experimental and LSA markets. It is

designed for 12V aircraft power.

The SV-COM-T25 and SV-COM-T83 are TSO’d transceivers supplied to Dynon Avionics by Trig

Avionics Limited and is derived from the Trig TY91 VHF radio system. The SV-COM-T25 is

intended for 25kHz applications commonly found outside of Europe. The SV-COM-T83 is

intended for 8.33kHz applications commonly found in Europe.

A complete radio system consists of a transceiver module and an SV-COM-PANEL. Optionally,

one can add the SV-INTERCOM-2S to the system for 2-place intercom capability.

FCC Part 15 Regulatory Notices

15.19(a)(3) This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) this device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation

15.21 Changes or modifications not expressly approved by Dynon Radios LLC could void the

user's authority to operate the equipment.

Considerations for SV-COM-X83

The SV-COM-T8 VHF COM Transceiver Module is supplied to Dynon Avionics by Trig Avionics

Limited and is derived from the Trig TY91 VHF radio system. The TY91 VHF radio unit supplied

by Trig communicates only with the TC90 Front Panel Controller. The Dynon Avionics SV-COM-

T8 communicates only with the Dynon Avionics SV-COM-PANEL. Modifications to the TY91 to

create the SV-COM-T8 involved only control and interface – the transmitter/receiver sections

were not modified.

Summary of content (21 pages)

PAGE 1
6. SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Do not transmit without an antenna connected. Doing so may damage your transceiver module SV-COM-760, SV-COM-T25 and SV-COM-T83 Introduction The SV-COM-760 is a 25kHz transceiver intended for the experimental and LSA markets. It is designed for 12V aircraft power. The SV-COM-T25 and SV-COM-T83 are TSO’d transceivers supplied to Dynon Avionics by Trig Avionics Limited and is derived from the Trig TY91 VHF radio system.
PAGE 2
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration The TY91/TC90 is an ED-23C compliant class C (25 kHz offset carrier) and class E (8.33 kHz single carrier) VHF radio. The TY91 has a nominal power output of 6 watts and meets the power output requirements for Class 4 and Class 6. The TY91/TC90 combination is certified to ETSO 2C169a 2C128a, TSO C169a and TSO C128a. Note that the SV-COM-PANEL control panel is not certified.
PAGE 3
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Physical Installation SV-COM-PANEL – VERTICAL Installation Dimension Quick Overview • • • Panel Cutout: (irregular – see drawing) Bezel Outline: 1.80” W x 3.532” T (45.72 mm W x 89.71 mm T) Note that the SV-COM-PANEL/V is sized such that two units can be stacked to the same height as the height of an SV-D1000 display.
PAGE 4
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Figure 209 – SV-COM-PANEL - VERTICAL Panel Cutout and Mounting Hole Dimensions - NOT ACTUAL SIZE Physical Installation: SV-COM-XXX Transceivers The figures on the following pages show mechanical dimensions for the SV-COM-760/T25/T83 remote transceiver modules. The following installation procedure should be followed to install a remote transceiver module, remembering to allow adequate space for installation of cables and connectors.
PAGE 5
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration • • • • Secure the SV-COM-T25/T8 to the aircraft via the three (3) mounting holes in the plate. The unit should be mounted to a flat surface – it is important that the tray is supported at the dimples as well as the three mounting points. Put the SV-COM-T25/T8 into the secured mounting tray by hooking the connector end under the lip on the tray.
PAGE 6
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Figure 210 – SV-COM-T25/T8 Dimensions – NOT ACTUAL SIZE 16-6 SkyView System Installation Guide – Revision AK (draft)
PAGE 7
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration 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).
PAGE 8
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Electrical Connections Harness Construction Because the transceiver module can be mounted in a variety of locations, the harness length requirements will vary from airplane to airplane. Thus, Dynon Avionics does not supply premanufactured harnesses between the transceiver module and SV-COM-PANEL. Instead, your transceiver module and SV-COM-PANEL include connectors and pins to generate a wide variety of harness configurations.
PAGE 9
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Transceiver Module – D25M Pinout Pin Function 1 PHONES GROUND 2 PHONES OUT 3 4 14 No connection No connection DATA RX from SVCOM-PANEL DATA TX to SV-COMPANEL No connection No connection MICROPHONE / PTT GROUND GROUND No connection No connection SV-COM-PANEL ENABLE No connection 15 PTT IN 16 17 No connection No connection 18 TRANSMIT INTERLOCK 19 20 21 22 GROUND IN No connection No connection GROUND IN 23 MICROPHONE IN 2
PAGE 10
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration The following figure depicts how a single SV-COM-760/T25/T8 is connected to an SVINTERCOM-2S. Note that SkyView Network connection(s) on SV-COM-PANEL are not shown, nor are additional connections between the SV-INTERCOM-2S and other devices that it connects to.
PAGE 11
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Shielded cable between transceiver module Pins 23 and 9, and SV-INTERCOM-2S Pins 1 and 25: • This cable consists of two wires plus shield. • Use one of the wires to connect transceiver module Pin 23 to SV-INTERCOM-2S Pin 25. • Use the other wire to connect transceiver module Pin 9 to SV-INTERCOM-2S Pin 1 (see instructions below - Terminating Shielded Cables to Pin 1 of SV-INTERCOM-2S).
PAGE 12
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Figure 212 – Dual SV-COM-760/T25/T8s to SV-INTERCOM-2S Transmit Interlock When two transceiver modules are installed, the TRANSMIT INTERLOCK pin can be connected to reduce “break-through” (noise being heard as the squelch opens) in one COM radio when the other COM radio is transmitting. The PTT IN signal (Pin 15) is connected to the TRANSMIT INTERLOCK (Pin 18) of the other radio, as shown above.
PAGE 13
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration • On the SV-INTERCOM-2S end, prep the shield into a "pigtail" so that you can solder to it (see instructions below - Terminating Shielded Cables to Pin 1 of SV-INTERCOM-2S). Shielded cable between transceiver module #1 Pins 23 and 9, and SV-INTERCOM-2S Pins 1 and 25: • This cable consists of two wires plus shield. • Use one of the wires to connect transceiver module #1 Pin 23 to SV-INTERCOM-2S Pin 25.
PAGE 14
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration • transceiver module #2 end of this cable is not electrically connected at transceiver module #2. On the SV-INTERCOM-2S end, prep the shield into a "pigtail" so that you can solder to it (see instructions below - Terminating Shielded Cables to Pin 1 of SV-INTERCOM-2S).
PAGE 15
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Figure 214 – Headset Jack Schematic Interpretation Power/Ground Input The TRANSCEIVER MODULE and SV-COM-PANEL require 10-30V DC. 20 AWG wire is recommended for power and ground wires for the TRANSCEIVER MODULE. For all other connections, 22 AWG wire is recommended.
PAGE 16
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration 16-16 SkyView System Installation Guide – Revision AK (draft)
PAGE 17
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Phones / Headset Connections for SV-INTERCOM-2S TRANSCEIVER MODULE Pin SV-INTERCOM-2S Pin 2 14 1 1 15 12 23 25 9 1 Notes PHONES OUT Audio signal from radio to headset phones PHONES GROUND Shield connection for PHONES OUT PUSH TO TALK IN When connected to GROUND, SVCOM-X25/X83 switches from Receive to Transmit MICROPHONE IN Audio signal from headset microphone to radio MICROPHONE / PTT GROUND Shield connection for MICROPHONE IN
PAGE 18
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration • • • • • Separation of COM antenna from another COM or NAV antenna: Recommended separation between COM antenna(s), NAV antenna(s), and ELT antennas is 6 feet (72 inches). Minimum required separation between antennas is 4 feet (48 inches). Ideally, install the primary COM antenna on the lower fuselage, and install the secondary / standby COM antenna on the upper fuselage.
PAGE 19
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration Antenna TNC Connector BNC connectors are more common for COM radio installations than TNC connectors. TNC Male to BNC Female adapters such as Amphenol P/N 242149 are readily available and inexpensive and will allow an antenna system terminated in a BNC Male connector to be used with the SV-COM-T25/T8. This section describes the technique for attaching the antenna cable to a TNC connector.
PAGE 20
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration TNC to BNC Adapter If you have purchased a COM antenna that has coaxial cable and a BNC connector already installed, you can use a “TNC Male to BNC Female” adapter to adapt the SV-XPNDR-261/262’s TNC connector to a BNC connector. We recommend that you purchase an adapter by a reputable manufacturer of radio frequency connectors and adapter such as Amphenol.
PAGE 21
SV-COM-760, SV-COM-T25 and SV-COM-T83 Installation and Configuration SETUP MENU > ENABLE 8.33 KHZ (SV-COM-X83) > NO. This setting can be changed back to 8.33 kHz at any time. Post Installation Checks • On Ground • Do all SV-COM-PANEL buttons and knobs function normally? • Verify dim commands from SkyView display dim the backlighting of the SV-COMPANEL.