Piper SENECA III - Page 344

SECTION 9
PIPER
AIRCRAFT
CORPORATION
SUPPLEMENT
14
PA-34-220T, SENECA
III
CONTROL
FUNCTION
OPERATIONAL
USE
HOLD
When
the
HOLD
pushbutton
is initially de-
Pushbutton
pressed,
weather
or
ground
mapping image
last
presented
is
retained
(frozen)
on
indicator
Video
Hold
¡
display
in
order
to
evaluate the
significance
Scan
of
storm
cell
movement.
Depressing
for
a
second time
reveals
direction
and
distance
of
target
movement
during
hold
period.
During
HOLD
mode, the
antenna
continues
to
scan
and the
display
will
continue
to
be
presented
as
long
as
power
is
supplied
to
the
system.
The
word
HOLD
will
be
flashing.
TILT
Electrically
adjusts
the
antenna
to
move
the
radar
beam
to
15
degrees
up or
down
from
Antenna
Tilt
horizontal
("0"
position).
Control
BRT
Control CRT
picture
intensity,
Brightness
Control
CONTROL
FUNCTIONS
AND
OPERATION
(cont)
Table
4-3
(cont)
REPORT:
VB-1110
ISSUED:
JANUARY 8,
1981
9-94,
4
of
6