Installation guide

SV-XPNDR-261/262 Installation, Configuration, and Testing
11-4 SkyView System Installation Guide - Revision R
Electrical Connections
Harness Construction
Because the SV-XPNDR-261/262 can be mounted in a variety of locations, the harness length
requirements will vary from airplane to airplane. Therefore, Dynon Avionics does not supply
pre-manufactured harnesses for the SV-XPNDR-261/262. Instead, your SV-XPNDR-261/262
shipped with enough connectors and pins to generate a wide variety of harness configurations.
Refer to the sections below for detailed wiring information. Note that your connector kit may
contain a 1.21K resistor. This is only used for SV-XPNDR-261/262 installations that incorporate a
certified GPS receiver for ADS-B Out functionality.
If you do not own a D-sub machined-pin crimping tool, they can be obtained for under $50 from
many retailers. See http://wiki.dynonavionics.com/Tools_not_supplied_by_Dynon for known
sources of these products. You may also find it helpful to own a pin insertion/extraction tool as
well.
Additional harness construction and wiring information can be found in Appendix C: Wiring and
Electrical Connections.
The SV-XPNDR-261/262 has a single D25 female connector which provides the data and power
inputs to the transponder. A single TNC coaxial connector attaches to the antenna.
SV-XPNDR-261/262 Interface – Pinout (Female D25)
Pin
Function
Notes
1
Loopback 1
Connect to Pin 2
2
Loopback 1
Connect to Pin 1
3
GPS Serial Input
Certified GPS Only for ADS-B Out (see
explanation below)
4
No Connect
-
5
Transponder Serial RX
Data Input from SkyView
6
No Connect
-
7
Transponder Serial TX
Data Output to SkyView
8
No Connect
-
9
No Connect
-
10
No Connect
-
11
No Connect
-
12
Loopback 2
Connect to Pin 13
13
Loopback 2
Connect to Pin 12
14
Ground
Connect to Aircraft Ground