TruTrak Digiflight Install Manual - Manual (Page 8)

DigiFlight Autopilot Installation Manual TruTrak Flight Systems
March 2002 Printing 6
Note that for the GX-50/60/65 units, the autopilot will need to be set for 9600 baud. The autopilot’s ARINC-A and ARINC-B
inputs should be left unconnected, as steering information in the case of UPSAT units is sent over the serial RS232 line along
with the ground track and ground speed information the autopilot needs. The serial GPS Steering information is only
recognized by DigiFlight units which contain the GPSS Option.
Garmin-35 “Smart Antenna” connections to TruTrak autopilot
Garmin-35
Wire Color
Signal Name
(Garmin)
Signal Name
(TruTrak)
P101 on
TruTrak Autopilot
Red PWR Primary Power 12
Black GROUND Ground 19
White GPS RS 232 OUT 1 Primary Serial Input 25
There is no necessary setup procedure for the Garmin-35 unit. It may require up to 45 minutes to achieve a position fix the first
time it is powered on; afterwards it will take less time to obtain a position fix as it contains its own battery and position
memory. To use this unit, configure the DigiFlight’s baud rate to 4800 baud in the setup screen. This unit does not provide
GPSS information, course guidance, or flight planning. Its sole function is to provide the autopilot with a source of ground
track and ground speed information to slave the autopilot’s internal DG function.