Dynon Avionics SkyView System Installation Guide - Manual (Page 170)

SV-EMS-220/221 Installation and Configuration
7-58 SkyView System Installation Guide - Revision S
Rotax 914 Air Box Temperature
Rotax supplies one Skykit Air Box temperature sensor on the 914 for connection to the 914
Turbo Control Unit (TCU). If you wish to monitor Air Box temperature on SkyView, install a
second Skykit Air Box temperature sensor and connect it to any general purpose input pin on
the SV-EMS-220/221 D37 connector. Connect one of the wires to the input pin, and the other
wire to any available ground on the SV-EMS-220/221 D37 connector. Configure the general
purpose input pin you select as SKYKITS AIRBOX TEMP.
Contacts
Contacts may be connected to any general purpose input pin on the SV-EMS-220/221’s D37. The
number of contacts in your SkyView system is only limited to the number of unused general
purpose 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 EMS
firmware reads the voltage state of general purpose inputs. To configure them as contacts, use
two voltage ranges in your sensor setup. Set one to 0-2V, and the other from 2-5V. SkyView will
then report whether each input is open (no connection to ground, which is the 2-5V state) or
closed (connection to ground, which is the 0-2V state). You must ensure that when closed, the
contact connects to a ground common to the SkyView system. The voltage on the general
purpose inputs must not exceed 15 volts.
Contacts Used For Retractable / Amphibious Landing Gear and Related Alerts
The simplest method to monitor landing gear state is to use a contact as there are only two
states to monitor and it is mechanically and electrically easiest to install. To enable audio alerts
related to landing gear status, the contact used for monitoring the status of landing gear must
be named GEAR:
SETUP MENU > EMS SETUP > SENSOR INPUT MAPPING > C37 Pxx >
> FUNCTION: CONTACT
> SENSOR: CONTACT
> NAME: GEAR
To configure the GEAR contact alert for retractable landing gear:

Install the GEAR contact that when the landing gear is up, the state of the contact is UP and
when the landing gear is down, the state of the contact is DOWN.

SETUP MENU > AIRCRAFT INFORMATION:
> LANDING GEAR TYPE: RETRACT
> LANDING GEAR CHECK SPEED: (set as appropriate for your plane)
> LANDING GEAR OVERSPEED: (set as appropriate for your plane)
To configure the GEAR contact alert for amphibious landing gear: