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TAS
−40
234
345
GF1710_036
ANNUNCIATION
T5.0
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−24
MODE SELECTION (CONT'D)
TGT − Target alert monitors for red or magenta weather conditions (rainfall rate) beyond the selected
range and 7.5° on each side of the airplane heading and is selectable in all but the 300 NM range. If
such weather is detected, outside the selected range the TGT alert annunciation changes from green
armed to an amber alert condition on the MFD WX Status display. When this warning is received, the
pilot should select longer ranges to view target alert. When TGT button is selected, TGT
annunciation will replace the GAIN annunciation in the status display.
TGT will be displayed as TGT (flashing), if red
or magenta is detected outside selected range.
Rainfall Rate
RAINFALL COLOUR CODING
in/hr mm/hr
Colour
.04 to .16 1 to 4
.16 to .47 4 to 12
.47 to 2.0 12 to 50
>2 >50 TOC KPHX
KDVT KSRP
4000 4000
FL180
WX
TGT
SAT
GSPD
−56
TAT
TAS
−40
234
345
GF1710_037
T5.0
SECT − The normal radar sweep is ± 60° from the airplane nose at a rate of 14 sweeps/min.
Pressing SECT button reduces the angle of sweep to ± 30° at a rate of 28 sweeps/min. Pressing the
SECT button again, returns to normal sweep. Both the pilot’s and copilot’s displays will show the
same sweep angle.
N
50 50
N
50 50
30
6
33
3
30
6
33
3
GF1710_038
120° arc 60° arc
GAIN − The GAIN knob is a rotary control and push/pull switch that is used to control the receiver
gain. Push on the GAIN switch to enable the preset calibrated gain mode. Calibrated gain is the
normal mode and is used for weather avoidance. Pull out on the GAIN switch to enable the variable
gain mode. Variable gain is used to provide additional weather analysis and for ground mapping. In
WX mode, variable gain receiver sensitivity can be increased to show weak targets or can be
reduced to eliminate weak returns.
ANNUNCIATION
TOC KPHX
KDVT KSRP
4000 4000
FL180
WX
G85%
SAT
GSPD
−56
TAT
TAS
−40
234
345
GF1710_039
T5.0
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−25
WX SYSTEM OPERATION
The RADAR rotary knob is used to select the following functions:
OFF − Turns the radar off. The system is no longer radiating and the antenna is stowed.
TOC KPHX
KDVT KSRP
4000 4000
FL180
SAT
GSPD
−56
TAT
TAS
−40
234
345
WX/OFF
TGT
GF1710_040
ANNUNCIATION
T5.0
SBY − Selects the WX system in standby mode. It takes approximately 45 seconds for the system to
warm up after being switched out of OFF. There is also a hidden mode, Forced Standby (FSBY).
This mode is enabled automatically on the ground, if the airplane is powered up, with the radar
powered. To exit FSBY, push STAB button 4 times within 3 seconds. This mode prevents the radar
from radiating, thereby protecting the ground personnel from radiation exposure.
STBY
TGT
FSBY
TOC KPHX
KDVT KSRP
4000 4000
FL180
SAT
GSPD
−56
TAT
TAS
−40
234
345
GF1710_041
ANNUNCIATION
T5.0
WX − Selects the WX mode of operation. When WX is selected, airplane inflight, the system is fully
operational and all parameters are set for enroute weather detection. If the rotary knob is moved
directly from OFF to WX, the system will first go into SBY for approximately 45 seconds, then
become active.
TOC KPHX
KDVT KSRP
4000 4000
FL180
WX
T5.0
TGT
SAT
GSPD
−56
TAT
TAS
−40
234
345
GF1710_042
ANNUNCIATION
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−26
WX SYSTEM OPERATION (CONT'D)
RCT − Enables the Rain Attenuation Compensation Technique (REACT). The REACT compensates
for attenuation of the radar signal as it passes through rainfall. Strong targets (high attenuation
levels) cause the receiver to reach its maximum gain value in a short time/short range. Weak targets
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