Dynon Avionics EFIS-D60 Installation Guide - Manual (Page 15)

Instrument Installation
EFIS-D60 Installation Guide 3-3
The metal shield around the EDC communication cable is connected to the short black/white
wire from the DB25. Connect this wire to ground.
Power Inputs
The EFIS-D60 has two separate power inputs, located on the DB25 EFIS connector. Only Master
Switch Power is required to operate the instrument. The other input provides redundancy. Below
is a table that explains both power inputs and their purposes. Both inputs share a common ground
signal, wired to pin 3 on the connector.
EFIS
DB25
pin#
Function EFIS DB25 wire
color
Description
1 Master
Switch
Power
Red Provides primary power to the instrument.
The EFIS-D60 will switch on upon
application of power. Connect to a switched
power source. Will not be adversely affected
by engine cranking.
3 Primary
Ground
Black Connect to ground. Must carry as much as 3
amps.
15 Emergency
Backup
Power
(Not wired in
Dynon harness)
Will operate the EFIS-D60 only if Master
Switch Power is not present. The transition
from Master Switch Power to Emergency
Backup Power will display a warning,
requiring you to press ACK within 30
seconds to keep the unit operating. This
warning will also display when transitioning
from either Master Switch Power or
Emergency Backup Power to Internal Backup
Battery power.
EFIS Serial Harness
The EFIS-D60 has one RS-232 serial port that can be used for two purposes. The EFIS Serial
port (DB9) is used for:
Connecting to a PC to use the Dynon Support Program to perform firmware upgrades,
configure checklists, and download internal logs. The Help Files of the Support Program
provide detailed instructions on these functions. The latest version of the Dynon Support
Program can be downloaded at
downloads.dynonavionics.com .
• Connecting a compatible GPS receiver to serve as a backup to airspeed in the event of a
blocked pitot.