BendixKing IN-862A System RDR-2100 - Manual (Page 54)

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Effective Date: 9/98 RDR 2100 Pilot's Guide: Rev 1
VP Operation In-Flight
interesting point to note between the azimuth and VP presentation is the
storm depth painted. The Vertical Profile presentation depicts the storm
tops to be 7 nautical miles deep while the azimuth view depicts a storm
depth of 2 nautical miles. The selected tilt angle would account for this
discrepancy. The vertical scan in the Vertical Profile mode of operation
is up and down 30 degrees. Normal azimuth scan tilt adjustment is up
and down 15 degrees, which limits the upward scan and ability to paint
the higher level development of the storm as depicted in Vertical Profile
presentation.
Between 3 and 5 nautical miles the low altitude areas of precipitation are
detected. Due to their proximity to the ground and aircraft, sufficient
returns are detected to provide the symmetrical returns we normally
associate with ground returns.
RDR 2100 PG 3/12/07 3:45 PM Page 50