WAVEGUIDE WAVEGUIDE
SWITCH AND DUMMY LOAD
FREIGHTERS 1
RECEIVER TRANSMITTERS (2 PLACES)
SEE A
WAVEGUIDE SWITCH AND DUMMY LOAD
WAVEGUIDE
REFLECTOMETER
WEATHER RADAR ANTENNA
PASSENGER 2
1 LH 082-099; AZ 281-299, AF 157,161
LH ALL EXCEPT 082-099 AZ ALL EXCEPT 281-299; AT ALL; IB 406-499 2
Weather Radar System Component Location Figure 502 (Sheet 1)
808756
EFFECTIVITY
CONFIG 1 799 Page 508
34-43-00 Sep 25/94
... .XA
BSEE WEATHER RADAR CAPTAIN'S INDICATOR BSEE FIRST OFFICER'S WEATHER RADAR INDICATOR
BRIGHTNESS RTLT AHEAD CSEE CONTROL PANEL WEATHER RADAR BRIGHTNESS AHEAD LT RT
30 30 30 30
60 60 60 60
18030 80 RANGE MARKS 25 N M1 & MARKS RANGE TILT -5 0 +5
PPI-1L INDICATOR 3 PPI-1L INDICATOR 4
SCAN50 150 BRT
25 300 HOLD
BRT OFF
PPI-1N INDICATOR 5 PPI-1N INDICATOR6
B
3 AZ 201-224 (50,150,300 NM RANGE SELECTION)
4 AF 157,161
5 AT ALL
6 IB 406-499; AZ 231-280; LH ALL
Weather Radar System Component Location Figure 502 (Sheet 2)
EFFECTIVITY
AT ALL; AZ ALL; LH ALL; CONFIG 1
AF 157,161; IB 406-4997XA Page 509
34-43-00
Sep 25/94
..... ... ..........................XA
5
5 10
CONTROL PANEL
PPI-1T INDICATOR
AZ 225-229,281-299 AZ 201-224 AT ALL IB 406-499; AZ ALL EXCEPT
201-224; LH ALL AF 157,161
Weather Radar System Component Location Figure 502 (Sheet 3)
EFFECTIVITY
CONFIG 1 AT ALL; AZ ALL; LH ALL;
7XA Page 510 AF 157,161; IB 406-499 Sep 25/94
34-43-00
(1)
21-58-00, Equipment Cooling - Adjustment/Test
(2)
24-22-00, Manual Control - Maintenance Practices (Apply Power)
(3)
34-41-00, Inertial Navigation System - Adjustment/Test
(4)
34-43-00, Weather Radar System - Adjustment/Test (Operating Test)
C. Test Weather Radar System
(1)
Place airplane such that it is pointed away from any large objects and toward an open area if the system tests requiring radiation from the antenna are to be performed. Observe the precautions in step (2) below. If the tests involving the display of radar video (echoes from terrain, rainfall, etc.) are to be performed, the airplane should be pointed so that the antenna sector scan includes hills or mountains preferably at various heights in the distance.
(2)
Place personnel warning lights around front of airplane in prominent areas to assure their visibility is optimium.
WARNING: DO NOT OPERATE WEATHER RADAR WHILE THE AIRPLANE IS BEING
_______ REFUELED OR DEFUELED AND DO NOT OPERATE IN ANY RADIATING MODE WHILE A FUELING OPERATION IS BEING CONDUCTED WITHIN 300 FEET OF THE ANTENNA OR AN EXPLOSION MAY OCCUR.
DO NOT ENTER AN AREA CLOSER THAN 50 FEET OF A RADIATING ANTENNA OR INJURY TO PERSONNEL MAY OCCUR.
CAUTION: WHEN THE WEATHER RADAR IS OPERATED IN ANY MODE THAT
_______ RADIATES RF FROM THE ANTENNA, DIRECT THE NOSE OF THE AIRPLANE SO THE FORWARD 180-DEGREE SECTOR IS FREE OF LARGE METALLIC OBJECTS (HANGARS, TRUCKS, OTHER AIRPLANES, ETC.) FOR A DISTANCE OF 300 FEET AND TILT THE ANTENNA UPWARD 14 DEGREES OR DAMAGE TO RECEIVER MAY OCCUR.
(3) Place INS units 1 and 2 on tilt table and connect extension cables. INS units should face in same general direction as when installed in mounting rack in airplane.
NOTE: Provide conditioned air for the INU's on tilt table.
____
NOTE: If no pitch and roll stabilization accuracy tests of the
____ weather radar antenna are to be performed, the INS units need not be removed from their mounts or placed on the tilt table.
NOTE: If INS and navigation computer are programmed for the
____ interface gimbal slew test, this capability may be used (instead of tilt tables) for checking the pitch and roll stabilization accuracy tests of the weather radar antenna.
(4)
Provide electrical power. Refer to 24-22-00.
(5)
Prepare INS for operation and erect to at least coarse align mode. Refer to 34-41-00.
EFFECTIVITY
AT ALL; AZ ALL; LH ALL; CONFIG 1 AF 157, 161; IB 406-499 01 A Page 511 Sep 25/94 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航3(129)
