SV-EMS-220/221 Installation and Configuration
7-72 SkyView System Installation Guide - Revision AA
Dynon Avionics sells both J and K type thermocouple wire which may be used to connect the
desired thermocouple to the SkyView. Ensure you order the correct wire type for the
thermocouple you intend to use. Crimp a Female DSUB pin on the end of each wire, and plug
them into the SV-EMS-220’s EMS 37-pin Main Sensor Harness D37. Polarity is important, so
ensure that you are routing the positive side (yellow for K-type; white for J-type) of the
thermocouple to pin 27 or pin 36 on the 37-pin harness, and the negative side to pin 28 or pin
37.
External EMS Warning Light
SV-EMS-220/221 D37 pin 29 can be wired and configured as an External Alarm Light
To wire EMS D37 pin 29 as an External Alarm Light, you may connect any standard LED or
incandescent lamp (1.5 Watt maximum), used during EMS-related “red” warning alarm
conditions. Ensure that the LED or lamp is designed for the voltage of your system. Mount it to
your panel according to its recommendations. Connect one of the lamp’s leads to your plane’s
power. Connect the other lead to pin 29 on the SV-EMS-220/221 37-pin wiring harness. During
an alarm condition, this pin is connected to ground, causing current to flow through the lamp.
Aircraft Spruce P/N 17-410 is an example of a light that will work for this application. An LED
and resistor in series will also suffice. If you use an LED as the indicator, you must choose a
resistor that delivers the appropriate current to the LED, and can accommodate the power
required for its current and voltage drop. Also note that the power and ground connections on
LEDs are not reversible.
After installation, you can test the External EMS Warning Light:
SETUP MENU > HARDWARE CALIBRATION > EMS CALIBRATION > EXTERNAL EMS WARNING
LIGHT TEST > (one more right click to enter the menu and temporarily illuminate the External
EMS Warning Light).
Engine Information
Use the Engine Information Wizard (SETUP MENU > EMS SETUP > ENGINE INFORMATION) to
specify engine type, horsepower rating, redline and cruise RPM, and set HOBBS and TACH time
(if installation is in a non-zero-time engine).
If you have an engine type that is in the list, please choose the appropriate engine. This will
allow the system to perform some calculations that are specific to that engine, such as % power
(Lycoming / Continental only) and special operating limitations (Rotax only). If your engine is
not listed, choose "Other."
Horsepower is used to do some of the % power calculations (Lycoming/Continental engines
only) and the auto Rich-of-Peak and Lean-of-Peak detection. Set it to the engine manufacturer's
rated HP for initial usage. You may need to adjust this number in order to get all calculations
working correctly.
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