(b)
A mode selector switch, item 5, which enables the selection of the WX, WX+T, TURB or MAP function.
(c)
A TILT selector switch, item 3, which enables the control of the antenna elevation. Antenna position is read in degrees, opposite the notch on the switch:
-either from 0 to 15 deg. upwards (UP), - or from 0 to 15 deg. downwards (DN).
(d)
A GAIN potentiometer, item 1, which enables the manual adjustment of the transceiver gain.
(e)
A PWS switch, item 2, with two stable positions AUTO/OFF, which enables the selection of the windshear function.
(f)
A GND CLTR SPRS switch, item 4, with two stable positions ON/OFF, which enables the selection of the ground clutter suppression.
**ON A/C 151-199,
(1) Weather radar control unit (Ref. Fig. 011B) The face of the control unit is provided with integral lighting. The INTEG LT/ MAIN PNL & PED potentiometer enables lighting adjustment. The potentiometer is located on the panel 111VU, at the left aft section of the center pedestal 11VU. The face of the weather radar control unit includes the following controls:
R 1EFF : 051-099, 106-149, 151-199, 201-299, 1 34-41-00Page 56 1301-399, 401-499, 1Config-3 Aug 01/05 1 1 1CES 1
Weather Radar - Control Unit
Figure 011A
R 1EFF : 051-099, 106-149, 201-299, 301-399, 1 34-41-00Page 57 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
Weather Radar - Control Unit R Figure 011B
R 1EFF : 151-199, 1 34-41-00Page 58 1 1 Config-3 May 01/05 1 1 1CES 1 1EFF : ALL 1 34-41-00Page 59 1 1 Config-3 May 01/05 1 1 1CES 1
R R (a) A switch, item 1, with three stable positions 1/OFF/2, which enables the activation of the transceiver.
R R (b) A mode selector switch, item 2, which enables the selection of the WX, WX/TURB or MAP function.
R R R R R R (c) A TILT selector switch, item 3, which enables the control of the antenna elevation. Antenna position is read in degrees, opposite the notch on the switch: - either from 0 to 15 deg. upwards (UP) - or from 0 to 15 deg. downwards (DN).
R R (d) A GAIN potentiometer, item 5, which enables the manual adjustment of the transceiver gain.
R R (e) A WINDSHEAR switch, item 4, with two stable positions AUTO/OFF, which enables the selection of the windshear function.
R (f) Not Applicable
**ON A/C ALL
(2) EFIS control section (on the FCU) In this part, the controls related to the selection of WX and W/S functions are described.
(a) A mode selector switch, item 1, made up of a rotary switch enables the selection of the ROSE or ARC function for display of a weather radar image on the CAPT and F/O NDs. Windshear information is available in ARC and ROSE mode.
(b) A scale selector switch, item 2, common to EFIS, FMGS and radar systems, enables the selection of 10, 20, 40, 80, 160 or 320 operation range in nautical miles (NM) for display of the weather radar image on the CAPT and F/O NDs. Windshear information is presented in the 10 NM minimum range and on other selected ranges. Morever, yellow radial lines are displayed to indicate the W/S included location.
NOTE : In the ARC or ROSE mode, if the CAPT or the F/O switches____ to the OFF mode FM, the offside weather image will also be transferred on the ND. Only one scale selector switch can then control the weather radar image display.
(3) Lighting/LOUDSPEAKER control panel CAPT and F/O lighting/LOUDSPEAKER control panels 301VU and 500VU which are connected to CAPT and F/O NDs, include ND concentric potentiometers for adjusting the brightness of the image displayed on the NDs. The outer knob of each potentiometer controls the brightness of the radar image only, item 3.
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
D. Utilization of Controls and Indicating Special precautions to be taken. Before selecting a 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 The transceiver is 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 ON position to set the 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 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM NAVIGATION 导航3(38)
