Antenna TILT angle control - +15 degrees.
Weather (WX) pushbutton selector switch
(display controller) - Depress to select weather
display mode on the EHSI.
Radar mode selector switch - SBY or TEST.
When power is first applied, the radar will be in
the wait mode for 45 seconds to allow the
magnetron to warm up.
RADAR mode selector switch - WX or GMAP.
Range switches - As required. Satisfactory
operation of the weather radar shall be verified
using sweep ranges at 5, 25, 50, 100, 200,
and 300 nautical miles.
TILT control - Move up or down to observe
targets above or below aircraft. Verify that
echo displays change in shape and location
only and that weather targets do not change
shape or location. Ground targets will not
change shape or location. Ground targets are
selected as a function of tilt.
Antenna stabilization check:
Fly to an altitude above 10,000 feet
RADAR system mode selector switch -