SV-XPNDR-261/262 Installation and Configuration
11-12 SkyView System Installation Guide - Revision AA
This input is typically used if the aircraft is already equipped with a certified GPS unit (typically
for qualification for IFR flight). This input is connected to a serial port output of the certified
GPS. See SV-XPNDR-261/262 Settings, GPS Data later in this section for information on how to
configure SkyView to use this capability.
If you connect a certified GPS to this input, you must install a 1.21k resistor (included with the
SV-XPNDR-261/262) between the certified GPS and the SV-XPNDR-261/262 as shown in Figure
131 – SV-XPNDR-261/262 Wiring Diagram.
Antenna Installation
Dynon Avionics offers a 1090 MHz Rod type
antenna suitable for use with the SV-XPNDR-
261/262 – P/N 102608-000. The Dynon Avionics
Transponder Rod type antenna is supplied with
a BNC connector. Dynon Avionics does not
supply coaxial cables for this antenna.
The length of the Dynon Avionics Transponder
Rod type antenna on the fuselage of the aircraft, base and whip, is 2.513 inches.
The SV-XPNDR-261/262 antenna should be installed according to the antenna manufacturer’s
instructions.
The following considerations should be taken into account when choosing a location for the SV-
XPNDR-261/262 antenna:
The transponder antenna should be well removed from any projections, the engine(s) and
propeller(s). It should also be well removed from landing gear doors, access doors or others
openings which will break the ground plane for the antenna.
The transponder antenna should be mounted on the bottom surface of the aircraft and in a
vertical position when the aircraft is in level flight.
The transponder antenna should not be installed within 3 feet (0.91 meters) of the ADF
sense antenna or any COM antenna.
The transponder antenna should not be installed within 6 feet (1.83 meters) of a DME
antenna.
Where practical, plan the antenna location to keep the cable lengths as short as possible
and avoid sharp bends in the cable to minimize the VSWR (Voltage Standing Wave Ratio).
Electrical connection to the antenna should be protected to avoid loss of efficiency as a result
of the presence of liquids or moisture. All antenna feeders shall be installed in such a way that a
minimum of RF energy is radiated inside the aircraft.
To Next Page
Loading...
