SkyView - Dynon Avionics

Power/Ground InputSV-XPNDR-26X Installation, Configuration, and TestingThe power supply can be 11-33 Volts DC; no voltage adjustment is required. 20 AWG wire issufficient for wire runs up to 50’ for this application. Use a 3 or 5 Amp fuse or circuit breaker forpower supply protection to the SV-XPNDR-26X. Note that none of SkyView’s voltage outputscan provide a sufficient amount of power to power the transponder module. The transpondermust be connected to aircraft power.It is always good practice to use more than one ground path in an installation. With only onewire there may be only a single grounding path for the transponder, controller and antenna.This can allow static electricity to build up and damage your SkyView display(s). Ensuring thatthe mounting tray is grounded provides an adequate alternative ground path to protect againstsuch events. This is particularly important when the transponder is mounted on a nonconductingsurface, such as a composite structure, where the mounting tray is often notgrounded. Therefore, make sure that the mounting tray is grounded in addition to having theground wire connected as depicted above.Note: The transponder power input is not protected against reversed powerconnections. Reversing the power and ground inputs to the transponder willdestroy it. Check wiring before applying power.Pin 1/2 and 12/13 LoopbacksPins 1/2, and pins 12/13 must be connected to each other as depicted in the figures above.Serial RX/TXAll communication between the SV-XPNDR-26X module and SkyView is accomplished via asingle bidirectional a serial connection. To accomplish this:Choose an unused serial port on each display to connect the SV-XPNDR-26X to. Notethat both the TX and RX sides of the serial port are needed, and both the RX and TX linesmust be connected to all displays in parallel. It is helpful, but not required, to choose thesame numerical serial port on each display. This lets you configure each display’s serialports identically.Connect the SV-XPNDR-26X TX wire (pin 7) to the SkyView serial RX of your choosing. Ifyou have multiple displays, the transponder TX wire must be connected to a serial RXwire on each display.Connect the SV-XPNDR-26X RX wire (pin 5) to the SkyView serial TX of your choosing. Ifyou have multiple displays, the transponder RX wire must be connected to a serial TXwire on each display.Record the SkyView serial port that you have chosen on each display as you will need toconfigure it later for use with the transponder.SkyView System Installation Guide - Revision J 11-7