SkyView System Installation Guide - Dynon Avionics

SV-EMS-220/221 Installation and ConfigurationNote: If you are converting a Dynon D10/D100 product installation to a SkyView installation,you should remove any resistor that is connected to the Rotax CHTs. They are not needed whenused with SkyView.Trim and Flaps Position PotentiometersPosition potentiometers may be connected to any general purpose input pin on the SV-EMS-220/221’s D37 and must be calibrated according to the instructions found in the EMS SensorCalibration Section. The number of position potentiometers in any installation is limited by thenumber of unused general purpose input pins on the SV-EMS-220/221’s D37 connector. Thetables in the Example Engine Sensor and Transducer Installations Section containsrecommended input pins for position potentiometers.Dynon Avionics does not sell trim or flaps position sensors. These are normally included with, oradded onto, their respective servos.Most flap and trim sensors are potentiometers (variable resistors) which require power andground inputs, and supply an output that is a function of position. These potentiometers comein a variety of resistance ranges, but are typically 1 kΩ, 5 kΩ, 10 kΩ, and 20 kΩ. All of thesevalues will work properly with the SkyView, as there is a calibration required. Connect the +5volt Auxiliary pin from the SV-EMS-220/221’s D37 to the +5 volt input on your trim/flap positionsensor. Note that you may need access to the SV-EMS-220/221’s +5 volt auxiliary supply forother sensor installations, so make allowances for breaking out the connection to other areas.Connect the ground input on the sensor to a ground common to the SV-EMS-220/221’s signalground. Connect the output of the sensor to the desired general purpose input. For physicalinstallation, refer to the instructions that came with your position sensor.If you are using the output from a Ray Allen servo or sensor, connect its white/orange wire tothe SV-EMS-220/221’s +5 volt Auxiliary pin (D37, pin 18), its white/blue wire to ground, and itswhite/green wire to the general purpose input of choice. Note that you may need access to theSV-EMS-220/221’s +5 volt auxiliary supply for other sensor installations, so make allowances forbreaking out the connection to other areas.Trim and flaps position potentiometers must be calibrated. Your SkyView displayutilizes onscreen wizards that help you do this. Go to the EMS Calibration Menu toaccess these wizards (SETUP MENU > HARDWARE CALIBRATION > EMSCALIBRATION).The take-off position will be shown as a green line on the trim widget. If you donot want this marking on your trim widget, press NONE during the take-offposition portion of the trim calibration.Coolant Pressure SensorThe coolant pressure sensor may be connected to any general purpose input pin on the SV-EMS-220/221’s D37.7-48 SkyView System Installation Guide - Revision O