Installation guide

SV-EMS-220/221 Installation and Configuration
SkyView System Installation Guide - Revision R 7-27
Pin
EMS 37-pin Harness
Wire Color
Sensor (with Dynon part number if
applicable)
35
Green
Not connected
36
Blue or Unwired
CAN High from 912 iS ECU
37
Green or Unwired
CAN Low from 912 iS ECU
The 912 iS ECU provides the following information to SkyView via a computerized CAN bus
interface:
 Engine RPM (tachometer)
 Oil Temperature
 Oil Pressure
 Coolant Temperature
 Lane A Bus Voltage
 Lane B Bus Voltage
 EGT 1-4
 Manifold Pressure
 Fuel Flow
 Engine Time
Additionally, the SV-EMS-221 provides an RPM out signal that can be sent to the aircraft's
propeller controller (if so equipped). The RPM out signal is nominally at 0 volts and steps to 12
volts for 0.1 milliseconds. The RPM out signal pulses once per engine revolution. The installer
must verify compatibility between the RPM out signal and the RPM input requirements of the
aircraft's propeller controller. The following diagram details all of the connections that need to
be made between the Rotax 912 iS and the SV-EMS-221, as well as the optional RPM signal
output to a propeller controller:
Figure 30 - SV-EMS-221 / Rotax 912 iS Connections