R **ON A/C 106-149, 201-299, 301-399, 401-499,
(Ref. Fig. 011A)
**ON A/C 151-199,
(Ref. Fig. 011B)
**ON A/C 051-099,
D. Utilization of Controls and Indicating Special precautions to be taken. Before selecting the radar mode on the control unit, make sure that:
-no one is within a distance less than 1.50 m from the antenna in movement within an arc of plus or minus 135 deg. on either side of the aircraft centerline
-the aircraft is not directed towards any large metallic obstacle, such as a hangar, which is within 5 m in an arc of plus or minus 90 deg. on either side of the aircraft centerline.
(1) Operation of the transceiver Only one transceiver works at a time, but both transceivers are always supplied in order to achieve maintenance function. On the weather radar control unit, after selection of the radar mode, the system switch has to be set to 1 or 2 position to set one transceiver in operation.
NOTE : No pre-heating time is necessary for the operation of the
____
weather radar transceiver.
NOTE : When the aircraft is parked, the TEST mode on the MCDU must be
____ preferably selected as a safety precaution.
On either EFIS control section of the FCU, the mode selector switch must be set to the ARC or ROSE position to obtain the image display on the corresponding ND.
NOTE : The radar transceiver is de-activated when the system switch
____ on the weather radar control unit is set to the OFF position or by placing the mode selector switches on both EFIS control sections in any position other than ROSE or ARC.
(2) Utilization of the weather radar control unit
(Ref. Fig. 011A)
R 1EFF : 051-099, 106-149, 151-199, 201-299, 1 34-41-00Page 61 1301-399, 401-499, 1Config-3 Aug 01/05 1 1 1CES 1 **ON A/C 001-049, 101-105, 151-199,
(a) Mode selection switch (item 2) The modes (WX, WX/TURB, MAP) are selected by placing the notch provided in the mode selector switch in front of the engraving of the function selected.
-WX This mode corresponds to the normal operation in weather detection. It provides disturbances up to 320 NM. The radar images are displayed on the NDs in four colors (black, green, yellow, red); their intensity corresponds to the strength of the return signal.
-WX/TURB This mode corresponds to the operation in weather and turbulence detections. Turbulence detection is limited to the first 40 NM regardless of the weather radar range selected and displayed. Turbulence areas are displayed on the NDs in magenta. All turbulent/non turbulent areas beyond 40 NM are displayed in the conventional black, green, yellow and red as in the weather (WX) mode.
NOTE : There is no detection of turbulence in clear sky.
____
-MAP This mode is only used for display of the ground map. A combination of transceiver gain, antenna position (TILT) and range selection enables the display of a larger area and the identification of major changes in the ground map (e.g. a sea cost, a lake, a mountain, an island...). The color display follows the color mentioned in correspondence table (see table 1 - para. 7. A.) If the image is too bright, due to too great reflection intensity, it can be dimmed by the GAIN potentiometer, item 5.
R **ON A/C 051-099, 106-149, 201-299, 301-399, 401-499,
(a) Mode selection (item 4) The modes (WX, WX+T, TURB, MAP) are selected by placing the notch provided in the mode selector switch in front of the engraving of the function selected.
-WX This mode corresponds to the normal operation in weather detection. It provides disturbances up to 320 NM.
1EFF : ALL 1 34-41-00Page 62 1 1 Config-3 Aug 01/05 1 1 1CES 1 The radar images are displayed on the NDs in four colors (black, green, yellow, red); their intensity corresponds to the strength of the return signal.
-WX+T This mode corresponds to the operation in weather and turbulence detections. All turbulent/non turbulent areas beyond 50 NM are displayed in the conventional black, green, yellow and red as in the weather (WX) mode.
-TURB This mode corresponds to the operation in turbulence detection. Turbulence detection is limited to the first 50 NM regardless of the weather radar range selected and displayed. Turbulence areas are displayed on the NDs in magenta.
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