Dynon Avionics SkyView System Installation Guide - Manual (Page 141)

SV-EMS-220/221 Installation and Configuration
SkyView System Installation Guide – Revision S 7-29

The engine type under SETUP MENU > EMS SETUP > ENGINE INFORMATION > ENGINE TYPE
must be set to ROTAX 912 iS (SV-EMS-221 ONLY) for 912 iS-specific indications to display
properly.

While the 912 iS ECU does report fuel flow information, Rotax makes no claims about its
accuracy. To allow the 912 iS ECU’s fuel flow parameter to be used by SkyView for both fuel
flow indications and fuel computer computations, simply make sure that pins C37P14 and
C37P19 under SETUP MENU > EMS SETUP > SENSOR INPUT MAPPING are set to UNUSED. If,
instead, you opt to use physical fuel flow senders, set these pins to fuel flow sensors in the
usual way and the physical sender will automatically override the Rotax 912 iS ECU’s fuel
flow reports.

If you have not installed physical fuel flow sensors, the fuel flow information from 912 iS
ECU used by the SkyView Fuel Computer can be adjusted if necessary: SETUP MENU >
HARDWARE CALIBRATION > EMS CALIBRATION > FUEL FLOW CALIBRATION > PUL/GAL (C37
P14) > (value). The default value is 68000. Higher numbers will reduce reported fuel flow,
lower numbers will increase reported fuel flow. For example, if the reported fuel flow is
10% low (determined by careful records of fuel fills and fuel used), set the value of C37 P14
to 61818 (68000 – 10%). Changing this value will not alter the displayed fuel flow; it will only
alter the fuel used calculated by the SkyView Fuel Computer.

The latest EMS sensor definitions file must be downloaded from the SkyView Downloads
page at http://downloads.dynonavionics.com and loaded onto each display.

See the EMS Engine Setups area at http://downloads.dynonavionics.comto download a file
that sets up 912 iS-specific pin mappings. It also positions 912 iS-specific widgets on the
EMS pages (such as ECU Lane A/B voltage, which must be monitored per Rotax).

The Kavlico 50 PSI fuel pressure sensor (Dynon P/N 101716-000) is the ONLY sensor that can
be used to monitor fuel pressure when SkyView is used to monitor a 912 iS. Additionally,
when using the required 50 PSI Kavlico sensor for measuring fuel pressure, “KAV 50 PSI
DIFFERENTIAL (101716-000)” sensor must be selected for fuel pressure sensor selection
under SETUP MENU > EMS SETUP > SENSOR INPUT MAPPING instead of the KAVLICO 50PSI
FLUID PRESS selection that is used for other configurations. If you use the EMS Engine Setup
for the 912 iS that is available from the link above, this selection and setup is already
correctly performed for you.
Fuel pressure on the 912 iS is measured with respect to the air box pressure. Therefore,
SkyView must have valid Manifold Pressure (from the EMS-connected MAP sensor) and
barometric pressure (from a SkyView ADAHRS) to be able to display the correct fuel pressure.