Dynon Avionics SkyView System Installation Guide - Manual (Page 140)

SV-EMS-220/221 Installation and Configuration
7-28 SkyView System Installation Guide - Revision S

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 31 – SV-EMS-221 / Rotax 912 iS Connections
Other connections, including fuel pressure, amps, volts, trim/flaps, and fuel quantity sensors
are made in the usual way between the individual sensors and the SV-EMS-221 directly.
Additional Rotax 912 iS Installation Instructions
When installing the 912 iS and setting it up to work with SkyView, please observe the following: