SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
B--3
PRIMUS
R
650 Weather Radar System
WEATHER RADAR CONTROLLER OPERATION
Controls and display features described below are numbered to match
the numbered callouts in Figure B--1. Lighting for all annunciators and
controls is controlled by the dimming bus for the aircraft panel.
Weather Radar Controller
Figure B--1
1 RANGE Buttons
The RANGE buttons select the operating range of the radar (and the
lightning sensor system, if it is installed). The range selections are from
5 to 300 NM (full scale). The up arrow selects increasing ranges, and
the down arrow selects decreasing ranges. Each of the five range rings
on the display has an associated marker that indicates its range.
2 RCT (Rain Echo Attenuation Compensation Technique --
REACT) Button
Pushing the RCT button enables and disables the REACT circuitry.
The REACT circuitry compensates for attenuation of the radar signal
as it passes through rainfall. The cyan field indicates areas where
further compensation is not possible. Any target detected within
the cyan field cannot be calibrated and should be considered
dangerous. All targets in the cyan field are displayed as magenta
fourth level precipitation.
REACT is active in the weather mode only, and selecting RCT forces
the system to preset gain. When engaged, RCT is displayed on the
EFIS/MFD.
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