Piper SENECA III - Page 377

PIPER
AIRCRAFT
CORPORATION
SECTION 9
PA-34-220T,
SENECA
III
SUPPLEMENT
19
CONTROL
DISPLAY
FUNCTION
Function
selector
I.
OFF position
removes
primary
power
from
the
system.
2. STBY
position
places
system
in
the standby
condition
during
warm-up
period
and
when
the
system
is
not
in
use.
No
display.
3.
TEST
position
selects
test
function
to
de-
termine
operability
of the
system.
A
test
pattern
is
displayed.
NO transmission
exists
in
the
TEST
condition.
4.
ON
position
selects
the
condition
for
normal
operation.
Radar
transmission
exists
in
the
ON position.
[
†
]
RANGE
Clears
the
display
and
places
the
indicator in
button
the
next
lower
range
each
time
the button is
pressed
(eg:
40
to
20), until minimum
range
is
reached.
TlLT control
Electrically
adjusts
the
antenna to
move
the
radar
beam
up
to
+
15
degrees
above the
hori-
zontal,
or
to
a
maximum
of
-15
degrees
below
the
horizontal position.
The horízontal
posi-
tion
is indicated
as
zero
degrees
on
the
control.
TRACK
[+]
When pressed,
a
yellow
track
cursor
line
ap-
button
pears
and
moves
to
the
right
(in
one
degree
steps)
while
the
button
is
held depressed. The
track
cursor
stops
when the
button is
released,
and
remains
for
about
10
to
15
seconds, then
disappears
unless
the
button
is
pressed
again.
The
differential heading
will
be
indicated
in
yellow
numerals
in
the
upper
left
corner
of
the
display,
and
disappears simultaneously
with
the
track
cursor.
CONTROL/DISPLAY
FUNCTIONS
Table 4-3
ISSUED:
FEBRUARY 25,
1982 REPORT:
VB-1110
3
of
6, 9-127