SkyView - Dynon Avionics

SV-EMS-220 Installation and ConfigurationRoute the wire from the desired general purpose input pin on the SV-EMS-220’s EMS 37-pinMain Sensor Harness to where the coolant temperature sensor is mounted. When routing thewires, make sure that they are secured, so they will not shift position due to vibration. Strip ¼”of insulation off the end of the wire. Crimp a #10 ring terminal onto the end of the wire. Ensurethat a good connection is made between the wire and the connector. Unscrew the nut from thestud on the coolant temperature sensor. Slip the ring terminal onto the stud and secure the nutover it.Rotax Pre-installed Coolant Temperature Sensor: Wire the coolant temperature sensor in thesame way as shown above for the Dynon-supplied sensor.General Purpose Temperature SensorAny temperature sensor provided by Dynon may be utilized as a general purpose temperaturesensor on any general purpose input pin on the SV-EMS-220’s DB37.For example, you may connect an SV-OAT-340 probe and configure it as a general purposethermometer (e.g., for cabin temperature).ContactsContacts may be connected to any general purpose input pin on the SV-EMS-220’s DB37. Thenumber of contacts in your SkyView system is only limited to the number of unused generalpurpose input pins on the connector.Dynon Avionics does not sell contacts or switches.Contacts are used for a variety of purposes, such as monitoring canopy closure. The EMSfirmware reads the voltage state of general purpose inputs. To configure them as contacts, usetwo voltage ranges in your sensor setup. Set one to 0-2V, and the other from 2-5V. SkyView willthen report whether each input is open (no connection to ground, which is the 2-5V state) orclosed (connection to ground, which is the 0-2V state). You must ensure that when closed, thecontact connects to a ground common to the SkyView system. The voltage on the generalpurpose inputs must not exceed 15 volts.General Purpose ThermocoupleYou may configure the SV-EMS-220 to monitor two J or K type thermocouples in addition to the12 thermocouples available on the SV-EMS-220’s DB25. Dynon Avionics does not supply aspecific general purpose thermocouple probe for this purpose. However, our standard EGT andCHT probes will work, as will any other J or K type thermocouple.The following table revisits which SV-EMS-220 pins are compatible with general purposethermocouples.7-40 SkyView System Installation Guide - Revision J