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PRIMUS
r
880
Digital
W
eather
Radar
System
A28-1146-102-00
Operating Controls
3-20
WC-884 WEATHER RADAR CONTROLLER
OPERATION
The controls and display features of the WC-884 Weather Radar
Controller are indexed and identified in figure 3-5. Brightness levels for
all legend and controls on the indicator are controlled by the dimming
bus for the aircraft panel.
Whenever single or dual radar controllers are used, the radar data is
displayed on the EFIS, MFD, or NAV display.
BRT
GAIN
MAXMIN
PULL VAR
OFF
STBY
TEST
WX
GMAP
MODE
TGT TRBRCTSTAB
10
25
100
200
RANGE
50
300
FPLN
SLV
TILT
PULL ACT
0
+
-
1 2 3 4 5
10 9 8 7 6
AD-46698-R2@
WC-884 Weather Radar Controller
Figure 3-5
1 BRT (Brightness)
The BRT switch is a rotary control that is used to set the radar (raster)
brightness on the EFIS display.
2 TGT (Target Alert)
The TGT switch is an alternate-action, button that enables and
disables the radar target alert feature. Target alert is selectable in allbut
the 300-mile range. When selected, target alert monitors beyond the
selected range and 7.5_ on each side of the aircraft heading. If a return
with certain characteristics is detected in the monitored area, the target
alert changes from the green armed condition to the amber TGT
warning condition. (Refer to the target alert characteristics in table 3-5
for a target description.) The amber TGT alerts the pilot as topotentially
hazardous targets directly in front and outside of the selected range.
When the alert is given, the pilot should select longer ranges to view
the questionable target. Target alert is inactive within the selected
range.