____________________________________________________________________
Page 5-80
Cirrus Perspective™ Line Maintenance Manual
Rev. E
190-00920-00
To
Restore
Original
Calibration
(if
needed)
If
needed,
the
original
calibration
can
be
restored
to
the
unit
according
to
the
following
procedure:
1.
Run
GDC_FieldCal.exe.
2.
Select
‘Restore’
from
the
upper
left
‐
hand
corner
of
the
page.
3.
Select
the
CAL_(serial_num)_YYYYMMDD_HHMMSS.txt
calibration
file
to
restore
to
the
unit
and
click
‘Open’.
Figure
5
‐
17.
Calibration
Files
Screen
4.
Select
the
Serial
Port
on
the
PC
that
will
be
used
to
communicate
with
the
GDC
74(X),
and
click
‘OK’.
A
progress
bar
screen
appears
while
the
calibration
is
being
restored
to
the
unit.
5.
If
cal
restoration
is
successful,
the
screen
will
display
‘Completed’
before
returning
to
the
main
entry
screen.
6.
Click
on
‘Exit’
in
the
upper
left
corner
to
exit
the
program.
7.
The
original
calibration
is
now
restored,
the
unit
may
be
installed
in
the
aircraft
(according
to
the
instructions
in
this
manual)
to
perform
the
operational
system
testing
portion
of
14
CFR
Part
43
Appendix
E.
