____________________________________________________________________
Cirrus Perspective™ Line Maintenance Manual
Page 5-77
190-00920-00
Rev.
E
Figure
5
‐
12.
Serial
Port
Pull
‐
down
List
9.
After
communication
with
the
GDC
74A
is
established,
the
‘Full
Backup’
screen
appears
while
a
full
backup
of
the
original
unit
setting
is
saved
to
a
file
named
BKUP_(serial_num)_YYYYMMDD_
HHMMSS.txt.
This
file
can
be
used
by
Garmin
to
restore
the
unit
to
the
original
settings
if
necessary.
10.
After
the
full
backup
file
has
been
created,
the
‘Prepare
To
Take
Measurements’
screen
appears
while
the
program
retrieves
the
unit
type
from
the
GDC
74A.
11.
After
the
unit
type
has
been
determined,
the
‘Set
altitude
to
0
ft’
screen
(Figure
5
‐
13)
appears.
12.
According
to
the
on
‐
screen
instructions,
set
the
pressure
control
system
to
a
pressure
altitude
of
0
feet.
13.
Allow
the
on
‐
screen
altitude
reading
to
stabilize,
then
click
‘OK’.
Figure
5
‐
13.
0
Feet
Calibration
Screen
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
