Pc connection for firmware updates, Gps connection for airspeed failover – Dynon Avionics EFIS-D6 Installation Guide User Manual
Page 16
Instrument Installation
PC CONNECTION FOR FIRMWARE UPDATES
On the EFIS 25-pin wiring harness
available from Dynon, there are three
wires bundled together, terminating in a
standard DB9-pin female connector. This
cable is 6’ long and pre-assembled for
connection to a PC-based laptop. Route
this cable to a convenient location that can
be accessed whenever you need to update
your product’s firmware or checklists.
If you did not purchase a harness from
Dynon, obtain a 9-pin D-sub connector
and make the three connections shown in the table.
To verify proper communication between the EFIS-D6 and the PC, use the Dynon Support
Program’s “Detect Firmware Version” function. Download the latest version of the Support
Program
.
GPS CONNECTION FOR AIRSPEED FAILOVER
A yellow/green wire is spliced into the EFIS serial receive
line. In the event of loss of airspeed data (e.g., via pitot
icing), the EFIS-D6 uses GPS groundspeed. This allows the
EFIS-D6’s attitude to operate properly despite compromised
airspeed accuracy. Connect this yellow/green wire to your
GPS’s serial transmit line. See the table at right for GPSs
known to work.
To use the GPS-failover feature on your EFIS-D6, your GPS
must output either “aviation format” or the $GPRMC and
$GPGGA NMEA sentences in its serial stream. You must
also have a supported cable that exposes your GPS’s serial
transmit line. If you own a Garmin 430 or 530, in the
UNITS/MAGVAR option, set the MAGVAR to AUTO.
To verify your GPS connection, plug your pitot tube and taxi
at a speed greater than 25 knots. If the GPS is properly
connected, the alert GPS ASSIST is displayed on the attitude
indicator. This verifies that, in the event of airspeed loss in
flight, your GPS will be properly utilized for attitude
calculation.
EFIS
DB25
Pin#
DB9
Pin#
Wire
Color
RS-232 Function
9 5
Black Signal
ground
10
2
Orange
EFIS-D6 transmit /
device receive
22
3
Yellow
EFIS-D6 receive /
device transmit
GPS units known to work
AvMap EKP-IV (v2.06.116R,
NMEA set to “processed”)
Bendix/King Skymap (set to
AR NAV 9600 output)
Garmin
96, 96c, 150XL, 195, 196, 295,
296, 396, 400, 420, 430,
430W, 496, 500, 520, 530,
530W, GX60, GX65
Lowrance handhelds
A frequently updated list of
compatible GPS units and
settings is available at our
Documentation Wiki at
.
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EFIS-D6 Installation Guide