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CL−605 Flight Crew Operating Manual
PSP 605−6
WEATHER RADAR SYSTEM (CONT'D)
RDR MENU Pushbutton
The RDR MENU pushbutton selects or deselects the RADAR menu on the PFD. The RADAR
menu provides control, mode and function selections of the weather radar system. The items on
the RADAR menu change using the MENU ADV/DATA/PUSH SELECT knob on the DCP
(selection box method). The menu automatically times out after 20 seconds of inactivity.
PFD Weather Radar Menu
Figure 17−10−6
RADAR Pushbutton
This pushbutton turns the radar from STANDBY to ON, and from TEST or ON to STANDBY.
RANGE/TILT/PUSH AUTO TILT Knob
RANGE Knob
The RANGE inner knob decreases or increases the PFD and MFD navigation display range.
The outer range ring of the navigation format (PPOS) is numbered with the selected range.
The middle range ring of ROSE and PPOS formats indicates half the selected range. The
available ranges are 5, 10, 25, 50, 100, 200 and 300 NM when weather radar is in use.
The pilot should keep in mind the blanked range area of the radar display in which weather
targets are not shown. When potential weather is present and one of the longer ranges is
selected, it is possible for weather targets to position within the blanked range area, and
therefore not show on the display. The size of the blanked range area equals one eighth of the
selected range.
SELECTED RANGE,
NMI
HALF-RANGE ARC
ANNUNCIATION
FULL-RANGE ARC
ANNUNCIATION
BLANKED RANGE, NMI
5 2.5 5 0.6
10 5 10 1.2
25 12.5 25 3.1
50 25 50 6.3
100 50 100 12.5
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−7
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
WEATHER RADAR SYSTEM (CONT'D)
SELECTED RANGE,
NMI
HALF-RANGE ARC
ANNUNCIATION
FULL-RANGE ARC
ANNUNCIATION
BLANKED RANGE, NMI
200 100 200 25.0
300 150 300 37.5
TILT Knob
The knob adjusts the pitch attitude of the weather radar antenna from +15° (full up) to –15° (full
down).
The weather radar antenna tilt arc is 30 degrees above and below the horizon. Fifteen degrees
is for manual tilt selection, and the remaining 15 degrees is for automatic stabilization. The
system automatically adjusts the antenna tilt in response to aircraft pitch and roll attitude
changes.
The selected tilt angle (–15° to +15°) is displayed on the weather radar mode line of the
navigation display.
PUSH AUTO TILT Button
Pushing the PUSH AUTO TILT button in the center of the TILT/RANGE knob alternately
selects or deselects automatic tilt. When selected, the antenna tilt is adjusted to maintain a
constant tilt/range ratio as radar range selection is changed. The tilt angle readout, on the
status line, is appended by “A” to indicate that automatic tilt is enabled. The antenna tilt is
automatically adjusted when aircraft altitude or radar range is changed, which keeps a ground
return at the same relative position on the display.
For example, if a ground return was indicated at 40 miles on a 50-mile range setting, it would
show at 80 miles (4/5 of the display) if the range setting were changed to 100 miles.
RADAR Modes
As previously mentioned, the radar modes are selectable from the PFD weather radar menu (see
Figure 17−10−6). Available modes are:
• STANDBY (from control section);
• TEST (from control section);
• WX;
• WX + TURB;
• TURB; and
• MAP.
STANDBY Mode
In STANDBY mode, the antenna stops transmitting and ceases to sweep.
TEST Mode
In TEST mode, the weather radar system verifies that the display is capable of depicting the
proper radar color palette.
Six colored arcs show on the display in TEST. The fifth arc changes between red and magenta
on alternate sweeps.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−8
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
WEATHER RADAR SYSTEM (CONT'D)
The transmitter is disabled in TEST mode, but antenna scan and tilt functions remain
operational.
Weather Radar Test Display
Figure 17−10−7
WARNING
THE AREA WITHIN THE SCAN ARC, AND WITHIN TWO FEET
OF AN OPERATING WEATHER RADAR SYSTEM,
CONSTITUTES A HAZARDOUS AREA. DO NOT OPERATE
THE SYSTEM IN ANY MODE OTHER THAN TEST WHEN THE
ANTENNA MIGHT SCAN OVER PERSONNEL. DO NOT
OPERATE THE RADAR INSIDE A HANGAR.
WX Mode
WX is the normal mode of weather detection. Detectable weather appears in different colors.
The color code map of the weather returns is dependent on the precipitation rate and its
　
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