SV-EMS-220 Engine Monitoring System Installation and Configuration
SkyView HDX System Installation Manual - Revision E 10-3
Dynon Avionics does not include mounting hardware for use with the SV-EMS-220. The
mounting tabs on each side of the module have holes sized for #10 fasteners, but it is up
to the installer to decide how the EMS will be secured to the aircraft. Use of ferrous
fasteners in this location is acceptable as the EMS is not adversely affected by small
magnetic fields. We recommend button head style AN hardware as spacing between the
holes in the tabs and the body of the enclosure will limit what style tool can be used to
tighten certain fasteners. If you will be installing dual SV-EMS-220, it is acceptable to
stack the two units. Follow recommended torque practices when tightening the mounting
hardware. Do not rivet the SV-EMS-220 to the aircraft as this will hinder future removal if
necessary.
10.2 Electrical Installation
Connect the EMS module to the SkyView network using the hardware mentioned in
Section 2.11 or using equivalent hardware.
Refer to Section 25 Appendix C: Wiring and Electrical Connections for details on
connector pinouts and wire colors.
Wire the EMS Systems and Sensors according to 103488-000 Wiring
Diagram Typical HDX Dual Display document.
10.2.1 SkyView EMS Sensor Definition and Configuration Files
The SkyView EMS utilizes a file to define sensor behavior and a file to map those sensors
to pins on the SV-EMS-220 and configure the sensors’ onscreen visual representations
or widgets. The sensor definition file is preloaded onto all SkyView displays during
manufacture and may need to be updated. The sensor mapping, and configuration file is
not preloaded onto displays and must be downloaded and installed by the user.
Reference the EMS Sensor Definitions, Mapping, and Settings Section for more
information.
10.2.2 SV-EMS-220 Wire Harnesses
Engine and environmental sensors and transducers are connected to the SV-EMS-220
via two (2) connectors on the module: one (1) D37M and D25F. Dynon Avionics offers
premade wire harnesses which break out the pins on these connectors and it is highly
recommended that installers use these wire harnesses. Table 12 below lists these wire
harnesses and their respective connections to the SV-EMS-220.
Table 12: Dynon Avionics EMS Wire Harnesses
EMS D37F Main Sensor Harness
EMS D25M EGT/CHT 4-cylinder
Thermocouple Wire Harness
A typical SV-EMS-220 installation will utilize one (1) EMS 37-pin Main Sensor Harness
and one (1) of thermocouple wire harness. Choose a thermocouple wire harness based
on the number of EGTs and/or CHTs that need to be monitored.
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