R 1EFF : 001-049, 101-105, 1 34-41-00Page 5 1 1 Config-3 May 01/05 1 1 1CES 1

 Weather Radar - Control and Indicating
 Figure 002A

R 1EFF : 051-099, 106-149, 201-299, 301-399, 1 34-41-00Page 6 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1

 Weather Radar - Control and Indicating R Figure 002B
R 1EFF : 151-199, 1 34-41-00Page 7 1 1 Config-3 May 01/05 1 1 1CES 1

R **ON A/C 051-099,

R (Ref. Fig. 001A, 002A)
R The components of the weather radar system are located in the aircraft as
R follows:

R -------------------------------------------------------------------------------R FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
R | | | | DOOR | REF.
R -------------------------------------------------------------------------------R 1SQ1 XCVR-WEATHER RADAR, 1 109VU 121 811 34-41-33
R 1SQ2 XCVR-WEATHER RADAR, 2 109VU 121 811 34-41-33
R 3SQ CTL UNIT-WEATHER RADAR 11VU 210 831 34-41-12
R 7SQ DRIVE-WR ANTENNA 110 110AL 34-41-11
R 9SQ MTG TRAY-WR XCVR 109VU 121 811 34-41-37
R 11SQ ANTENNA-WEATHER RADAR 110 110AL 34-41-11

R 1EFF : 051-099, 1 34-41-00Page 8 1 1 Config-3 May 01/05 1 1 1CES 1 **ON A/C ALL

 3. System Description
__________________
 **ON A/C 001-049, 101-105, 151-199,

 (Ref. Fig. 003)
 **ON A/C 051-099,

 (Ref. Fig. 003A) R **ON A/C 106-149, 201-299, 301-399, 401-499,
 (Ref. Fig. 003B) R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 (Ref. Fig. 004)
 **ON A/C 051-099,

 (Ref. Fig. 004A)
 **ON A/C ALL

 The WR/PWS is composed of items closely associated with its operation, such as peripherals supplying parameters, EFIS display units or maintenance functions.
 NOTE : The weather radar image is shown on the CAPT and F/O Navigation
____ Displays (ND). The NDs are connected to the three Display Management Computers (DMC) and to the CAPT and F/O EFIS control panels of the FCU.
 NOTE : The three ADIRUs give data information to the weather radar system.
____
 These data ensure the radar antenna stabilization and the
 computations of the windshear function.

 1EFF : ALL 1 34-41-00Page 9 1 1 Config-3 Aug 01/05 1 1 1CES 1

 Weather Radar Block Diagram - Data Acquisition
 Figure 003

R 1EFF : 001-049, 101-105, 151-199, 1 34-41-00Page 10 1 1 Config-3 May 01/05 1 1 1CES 1R Weather Radar Block Diagram - Data Acquisition R Figure 003A

R 1EFF : 051-099, 1 34-41-00Page 11 1 1 Config-3 May 01/05 1 1 1CES 1

 Weather Radar Block Diagram - Data Acquisition
 Figure 003B

R 1EFF : 106-149, 201-299, 301-399, 401-499, 1 34-41-00Page 12 1 1 Config-3 Aug 01/05 1 1 1CES 1

 Weather Radar Block Diagram - Control and Display
 Figure 004

R 1EFF : 001-049, 101-149, 151-199, 201-299, 1 34-41-00Page 13 1301-399, 401-499, 1Config-3 Aug 01/05 1 1 1CES 1R Weather Radar Block Diagram - Control and Display R Figure 004A

R 1EFF : 051-099, 1 34-41-00Page 14 1 1 Config-3 May 01/05 1 1 1CES 1R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,

 A. General The weather radar system, which complies with ARINC Characteristics 708A, consists of:
 -
a transceiver 1SQ1,

 -
a control unit 3SQ,

 -
an antenna drive 7SQ,

 -
an antenna plate 11SQ,

 -a transceiver single mounting tray 9SQ with a wave guide.
 (1)
 Weather Radar Transceiver The receiver-transmitter is the heart of the WR/PWS system, the additional necessary wiring and interfaces enable the weather radar transceiver to operate as a PWS (WR/PWS) and autotilt. The receiver-transmitter ensures the following functions:

 -generation of the very short intense pulses of microwave energy via an X-band wave guide to the antenna, and the processing of their echoes (radio frequency signals) to obtain the desired information,
 -the receiver signal is formatted into 1600-bit ARINC 453 words and sent to the Display Management Computers (DMCs),
 -acquisition of data from Radio Altimeters (RA1 and RA2) and other specific interfaces,
 -windshear event detection and generation of the appropriate signal,
 -BITE function of the system.

 (2)
 Weather Radar Control Unit The control unit generates a 32-bit (label 270) serial control word which describes the selected operating modes (system activation, weather radar modes, activation of the predictive windshear function). The transceiver receives one ARINC 429 bus coming from the control unit. Moreover, the predictive windshear function can be de-activated if the PWS does not operate correctly.
　
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