TM 55-1510-219-10
NOTE
Program prevents entry of an
address higher than 13777.
6.
Insure waypoint wheel is at
"0".
7.
INSERT/ADVANCE
pushbutton Press. (Observe
address will appear in both
data displays.)
8.
Data
selector
DST/TIME.
(Observe most significant half
of desired data appears in left
display and least significant
half appears in right display.)
9.
To obtain data at next higher
memory locations -Advance
waypoint thumbwheel. (For
example: If address 400 was
entered with thumbwheel at
"0",
address
402
will
be
available when thumbwheel is
set
to
"1",
"404"
when
thumbwheel is set to "2", etc.)
3-29. WEATHER RADAR SET (AN/APN-215).
a.
Description. The weather radar set (fig. 3-24)
provides a visual presentation of the general sky area of
approximately 120 around the nose of the aircraft,
extending to a distance of 240 nautical miles. The
presentation on the screen shows the location of
potentially dangerous areas, in terms of distance and
azimuth with respect to the aircraft. The radar is also
capable of ground mapping operations. The weather
radar set is protected by a 5ampere RADAR circuit
breaker located on the overhead circuit breaker panel
(fig. 2-26).
b.
Controls and Indicators.
(1)
Weather radar control-indicator switch.
CONTROL
FUNCTION
GAIN control
Used to adjust radar receiver gain in
the MAP mode only.
STAB OFF
Push type on/off switch. Used to
switch
control
antenna
stabilization signals.
Range switches
Momentary action type switches.
When pressed, clears the screen
and increases or decreases the
range depending on switch pressed.
TILT control
Varies the elevation angle of radar
antenna a maximum of 15
Figure 3-24. Weather Radar Control-Indicator (AN/APN-215)
3-72
