SkyView - Dynon Avionics

Appendix C: Wiring and Electrical ConnectionsD-subminiature Crimp Contacts and ToolsD-subminiature crimp contacts can be obtained from a variety of sources. Dynon recommendsthe use of the following Mil Spec types in avionics applications.Gender Mil Spec # Wire AWGFemale/Socket M39029/63-36820, 22, 24Male/Pin M39029/64-369Table 50–Recommended D-subminiature Crimp PinsUse a high quality 4-way indentation contact crimper when working the Mil Spec contacts inTable 50. Paladin Tools P/N 1440 (for 20 to 26 AWG wire) is an example of such a contactcrimper tool.Homemade Wire Harness ConsiderationsEach SkyView display includes its own wire harness (SV-HARNESS-D37) for connection to power,serial ports, USB, the external battery, and other connections. We recommend that you use thisharness for display installations instead of building your own.Here are some considerations if you build your own SkyView network wire harnesses.Wire InsulationWe recommend that all wire harness wires that are installed in aircraft utilize Tefzel® insulation.Twisted PairsSkyView networks utilize two data wire pairs for communication between devices. This guiderefers to these pairs as Data 1 and Data 2 and each have an A and a B wire. These pairs shouldhave 8 to 10 twists per foot over their entire length.Heat Shrink Bundling and Strain ReliefAll wires should be bundled together with heat shrink and then strain relieved when exiting theconnector shell or hood.SV-BAT-320 ConnectionTo connect a homemade harness to an SV-BAT-320, the following specifications must befollowed closely for the SV-BAT-320 to charge and work correctly:Connector:Pins:Wire:Molex Micro-Fit P/N 43640-0301 (Digi-Key P/N WM1856-ND)Molex Micro-Fit P/N 43031-0007 (Digi-Key P/N WM1841-ND)22 AWG Tefzel, NO MORE THAN 24” LONG; red w/yellow: M22759/16-22-24;black: M22759/16-22-017-2 SkyView System Installation Guide - Revision J