Piper SENECA III - Page 343

PIPER
AIRCRAFT
CORPORATION
SECTION 9
PA-34-220T,
SENECA
III
SUPPLEMENT
14
CONTROL/
FUNCTION
OPERATIONAL USE
OFF/
STBY
TEST
I.
Controls
primary
power
to
radar
system.
Range
Selector
2.
Places
system
in
"standby"condition
during
warmup
period
and when
system
is
not
in
use.
3.
Places
system
in
"test" mode
to
determine
operability
of
system.
No
transmission
in
"test" mode.
4.
Selects
operating
range.
Enables
trans-
mitter.
Wx
GAIN
Wx
A
1.
In
Wx
position,
weather
image gain is
at
preadjusted
level. Contour
operation
is
Gain
Control
and
automatic
and
constant.
Mode Selector
2. In
GAIN position, 6 levels
from MAP
(maximum
gain)
to
MIN
may
be
selected
for
ground
mapping operations.
Contour
operation
is
disabled.
3. In
Wx A
position, the radar
indicator dis-
play
alternately
cycles
between
the Wx
position
and
the
GAIN MAP
position.
This
will
verify
if
a
contour storm
cell
area
is
a
storm
cell
and
not
a
lake
or some
other
terrain
feature-
CONTROL
FUNCTIONS AND
OPERATION
Table
4-3
ISSUED:
JANUARY
8,
1981
REPORT:
VB-1110
3
of
6,
9-93