TruTrak Sorcerer – Outdated - Manual (Page 12)

11
Additional Operating Instructions
Initializing the
Autopilot
The autopilot master switch
should be in the off position
when the engine is started.
Aircraft electrical systems can
generate voltage transients
during an engine start, and like
other avionics systems, the
autopilot should not be
subjected unnecessarily to these
conditions. After start up, turn
on the autopilot master switch
and hold the aircraft stationary
as the internal gyros are
initialized. This takes
approximately ten seconds
during which time the display
will show the words PWR UP
in the lower right. NOTE: The
aircraft must be stationary
for the first ten seconds after
power is applied to the
autopilot.
When initializing is
complete PWR UP will change
to AP OFF.
GPS Acquisition
If there is no GPS signal
the top left portion of the
display will read
NO GPS . If a
GPS signal is present, but
satellites have not yet been
acquired, the upper left portion
of the display will read
NO FIX
with a flashing
•
below. When
the GPS does obtain a fix, the
period will be replaced by an
asterisk and the display will
switch to show
GPS OK with a
flashing * below . This means
that when a certain velocity is
attained
TRK will appear
followed by the current track.
This happens at approximately
10 Knots groundspeed as
detected by GPS and will even
occur at rapid taxi speeds. The
four possible screens are shown
below.
Altitude Select with
AP Off
NOTE: (SORCERER ONLY)
If a target or assigned
altitude is known prior to take-off
this altitude can be set while on
the ground. As with the AP on,
pressing [SEL] will display the
SEL ALT
setup screen. The