SkyView - Dynon Avionics

SV-EMS-220 Installation and ConfigurationFuel level sensors must be calibrated. Your SkyView display utilizes onscreenwizards that help you do this. Go to the EMS Calibration Menu to access thesewizards (SETUP MENU > HARDWARE CALIBRATION > EMS CALIBRATION).Once a capacitive fuel level sensing system is calibrated for a certain type fuel, onlythat fuel should be used and the aircraft should be placarded for such. For example,ethanol has a dielectric constant much different than 100LL or Auto Fuel. Ifcalibrated for 100LL, then by using Auto 10% Ethanol in the tanks the indicationscould off by 50%.Resistive fuel level sensorYou may connect as many resistive fuel level sensors to the SV-EMS-220 as open generalpurpose inputs will allow. We recommend that pins 20 and 21 of the SV-EMS-220 DB37 are usedbefore other general purpose inputs.Capacitive fuel level sensorCapacitive fuel level sensors are only supported on pins 8, 22, and 31 on the SV-EMS-220 DB37.Additionally, your capacitive sensor needs to output a variable voltage within the ranges of 0-5volts DC.First, supply the sensor with power according to the manufacturer’s instructions. If the sensormanufacturer requires a sensor calibration, perform that calibration first. Be sure to configurethe firmware to recognize the capacitive fuel level sensor on the enhanced general purposeinputs.If you are installing Dynon’s Capacitance-to-Voltage Converter (most commonly used with thecapacitive plates in some RVs), please read the Capacitance-to-Voltage Converter installationinstructions.7-34 SkyView System Installation Guide - Revision J