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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 231
ALL
WR/PWS CONTROLS AND DISPLAYS
CONTROL PANEL WITH SPLIT FUNCTION (OPTION)
1/OFF/2 SYSTEM SWITCH
This three stable position switch enables the
activation of the transceiver 1 or 2 (if installed).
When the switch is set to 1 or 2, the selected weather
radar system is energized and operates if at least one
ND is set to ROSE or ARC mode.
MODE SELECTORS
Two mode selector switches are available. The left one
is dedicated to the CAPT and the right one to the F/O.
1 - WX Position:
When the mode selector is in the WX position, the radar
is in normal mode of operation and the colors on the
NDs depend on the intensity of the precipitation.
Precipitation rate and related color echoes
(P: precipitation rate):
- P < 1 mm/h: Black.
- 1 < P < 4 mm/h: Green.
- 4 < P < 12 mm/h: Yellow.
- P > 12 mm/h: Red.
2 - WX/TURB position:
This mode corresponds to operation in weather and
turbulence detection.
The turbulence detection is limited to the first 40 NM
from the A/C, beyond, the turbulence is displayed in
the conventional colors as in WX mode.
The turbulence areas are displayed in magenta on the
NDs (P > 5 mm/s).
TILT KNOBS
Two TILT knobs are available. The left one is dedicated
to the CAPT and the right one to the F/O.
The TILT knobs allow manual control of the antenna
elevation.
The antenna elevation angle can be adjusted in 1/4 degree
steps within a range of - 15° up to + 15°.
NOTE: TILT information is displayed in cyan in the
right lower corner of the NDs except in case of
failure or system TEST.
NOTE: During a windshear detection event, the TILT
antenna is automatically controlled. However,
the TILTs displayed on the NDs correspond to the
control panel settings.
TMUWPWE02-T03 LEVEL 2
EFFECTIVITY 34-41-00 Page 6
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 232
ALL
TMUWPWE02-P03 LEVEL 2
WR/PWS CONTROLS AND DISPLAYS - CONTROL PANEL WITH SPLIT FUNCTION
EFFECTIVITY 34-41-00 Page 7
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 233
ALL
WR/PWS CONTROLS AND DISPLAYS
CONTROL PANEL WITH SPLIT FUNCTION (OPTION) (CONT’D)
CAPT/BOTH/FO SWITCH (OPTION)
1 - BOTH POSITION:
The CAPT and the F/O can operate separately the control
panels using their associated controls. Thus, two
different weather radar images, with different
settings, can be displayed on the CAPT and F/O NDs.
Each scan of the weather radar alternately refreshes
the CAPT and the F/O displays.
2 - CAPT Position:
The weather radar image with the CAPT setting is
displayed on both NDs.
3 - F/O Position:
The weather radar image with the F/O setting is
displayed on both NDs.
NOTE: Below 2500ft the switch must be set to CAPT or
F/O position in order to keep an appropriate
refresh rate of the radar image in case of
windshear event detection.
WINDSHEAR SWITCH (OPTION)
The WINDSHEAR AUTO/OFF switch enables the
activation/deactivation of the predictive windshear
function.
When in AUTO position the predictive windshear
detection is automatically activated below 2500 ft
whatever the 1/OFF/2 system switch position.
The predictive windshear function detection can
operate either with weather radar modes activated or
independently.
A dedicated windshear icon is superimposed on the radar
image, displayed on the NDs, when the phenomena is
detected.
TMUWPWE02-T04 LEVEL 2
EFFECTIVITY 34-41-00 Page 8
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 234
ALL
TMUWPWE02-P04 LEVEL 2
WR/PWS CONTROLS AND DISPLAYS - CONTROL PANEL WITH SPLIT FUNCTION
EFFECTIVITY 34-41-00 Page 9
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 235
ALL
WR/PWS CONTROLS AND DISPLAYS
WR FAILURE MESSAGES
Two types of failures are likely to affect the radar
system:
- Failures which result in a loss of radar image,
displayed in red (loss of a radar system
component).
- Failures which affect the radar image,
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