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30,000
20,000
10,000
0
0 25 50 100
CENTER OF RADAR BEAM
ZERO TILT
5.6° 7,400 ft
14,800 ft
29,000 ft
RANGE NAUTICAL MILES
ELEVATION IN FEET
40,000
30,000
20,000
10,000
5,000
0
0 10
CENTER OF RADAR BEAM
ANTENNA ADJUSTED
7,400 ft
5.6°
14,800 ft
RANGE NAUTICAL MILES
ELEVATION IN FEET
20 30 40 50 60 70 80
FOR 2.8° UPTILT
3,000 ft
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−30
WX SYSTEM OPERATION (CONT'D)
TILT MANAGEMENT (Cont’d)
The following figure gives the approximate tilt settings at which ground targets begin to be
displayed on the image periphery for an 18inch
radiator. The range at which ground targets
can be oberved is affected by the curvature of the earth, the distance from the aircraft to the
horizon, and altitude above the ground. As the tilt control is rotated downward, ground
targets first appear on the display at less than maximun range.
To find the ideal tilt angle after the aircraft is airborne, adjust the TILT control so that ground
clutter does not interfere with viewing of weater targets. Usually, this can be done by tilting
the antenna downward in 1° increments until ground targets begin to appear at the display
periphery. Ground returns can be distinguished from strong storm cells by watching for
closer ground tragets that are displayed.
When ground targets are displayed, move the tilt angle upward in 1° increments until the
ground targets begin to disappear. Proper tilt adjustment is a pilot judgment, but typically the
best tilt angle lies where ground targets are barely visible or just off the radar image.
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−31
WX SYSTEM OPERATION (CONT'D)
TILT MANAGEMENT (Cont’d)
The figure gives the approximate tilt settings required for different altitudes and ranges. If the
altitude changes or a different range is selected, adjust the tilt control as required to
minimize ground returns.
GF1710_182
LINE OF
SIGHT
(NM)
RANGE
SCALE
(NM)
ALTITUDE
(FEET)
10 25 50 100 200
40,000
35,000
30,000
25,000
20,000
15,000
10,000
5,000
4,000
3,000
2,000
1,000 39
55
67
78
87
123
151
174
195
213
230
246
−5
−9
−7
−8
−9
−13
−13
(LINE OF SIGHT LIMITED REGION)
(TILT LIMITED
REGION)
−11
−10
−5
−5
−6
−6
−8
−4
−12
−11
−10
−5
−6
−7
−8
−9
−5
−5
−4
−6
−7
−7
−8
−8
−6
−5
ALTITUDE
TILT
RANGE
Tilt angles shown are approximate. Where the tilt angle is not listed, the operator must exercise
good judgment.
NOTE
The line of sight distance is nominal. Atmospheric conditions and
terrain affect this value.
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−32
WX SYSTEM OPERATION (CONT'D)
TILT MANAGEMENT (Cont’d)
For more information on WX Radar, see manufacturer’s Manual A28−146−102−00.
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−33
LIGHTNING SENSOR SYSTEM (LSS) (IF INSTALLED)
The lightning sensor system is used to detect lightning. The LSS rotary knob is used to select the
following functions:
OFF − Turns off the LSS.
KDVT
4000
345
234
−56
−40
GMAP
TGT
LX OFF
(If installed)
TOC KPHX
KSRP
4000
FL180
SAT
GSPD
TAT
TAS
GF1710_049
ANNUNCIATION
T5.0
SBY − Selects the LSS in standby mode. The data is inhibited, but LSS accumulates data.
KDVT
4000
345
−56
−40
234
GMAP
TGT
STBY
TOC KPHX
KSRP
4000
FL180
SAT
GSPD
TAT
TAS
GF1710_050
ANNUNCIATION
　
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