Dynon Avionics SkyView System Installation Guide - Manual (Page 117)

SV-EMS-220/221 Installation and Configuration
SkyView System Installation Guide – Revision S 7-5
Dynon Part Number Description Mates with…
100399-000 EMS 37-pin Main Sensor Harness SV-EMS-220/221 Male D37
100399-001
EMS EGT/CHT 4-cylinder 25-pin
Thermocouple Wire Harness
SV-EMS-220/221 Female D25
100399-002
EMS EGT/CHT 6-cylinder 25-pin
Thermocouple Wire Harness
SV-EMS-220/221 Female D25
100399-004
EMS EGT 2-cylinder 25-pin
Thermocouple Wire Harness
SV-EMS-220/221 Female D25
Table 13 – EMS Wire Harnesses
A typical SV-EMS-220 installation will utilize one EMS 37-pin Main Sensor Harness and one of
thermocouple wire harness. A typical SV-EMS-221 installation does not utilize a thermocouple
harness. Choose a thermocouple wire harness based on the number of EGTs and/or CHTs that
need to be monitored.
The EMS 37-pin Main Sensor Harness includes a 9-pin connector that is wired to
pins 11 (Orange wire), 12 (Yellow wire), and 30 (Black wire). This connector is
used for other Dynon products, but is not used in SkyView installations. Thus,
the 9-pin connector should be removed to use these wires for connecting
sensors to the SV-EMS-220. Remove the connector by cutting the three wires
close to the 9-pin connector.
The EMS 37-pin Main Sensor Harness (Dynon P/N 100399-000) may be wired
with blue and green wires on pins 36 and 37, respectively. If you are going to use
pins 36 and 37 for a thermocouple input such as a CHT or EGT (this is not
possible on the SV-EMS-221 that is used with the Rotax 912 iS, as these wires are
reserved for CAN communications), the blue and green wires should be removed
and replaced with the appropriate type of thermocouple wire for thermocouple
functionality on pins 36 and 37. If you are not going to use these pins for a
thermocouple input, the blue and green wires do not need to be removed.
All of the ground wires on the SV-EMS-220/221 D37 are interchangeable, and can
be used for any sensor that requires grounding. Additionally, one of these wires
needs to be grounded to the aircraft locally to provide a good ground reference
for the engine sensors. We suggest using the black ground wire connected to D37
pin 3 for this purpose.
Sensor and Transducer Compatibility Key
This section is primarily intended for users with installations that are not
supported in or significantly deviate from the preconfigured installation resources
available from Dynon. Reference Example Engine Sensor and Transducer
Installations Section for installations which have downloadable preconfigured
installation resources.