MAGENTA
RED
YELLOW
GREEN
WEATHER PLUS TURBULENCE (WX+T)
YELLOW
YELLOW
GREEN
GREEN
GROUND CLUTTER SUPPRESSION (GCS) MAP
Weather Radar Indicator Controls and Mode Displays Figure 5 (Sheet 1)
EFFECTIVITY
CONFIG 4
799 Page 29
AF 160,162-171
34-43-00
Sep 25/94
RED
MAGENTA
YELLOW
RED
GREEN
YELLOW
GREEN
WEATHER (WX) SEARCH (SCH)
YELLOW
YELLOW
GREEN
GREEN
GROUND CLUTTER SUPPRESSION (GCS) MAP
Weather Radar Indicator Controls and Mode Displays
Figure 5 (Sheet 2)
EFFECTIVITY CONFIG 4 AF 183,184
799 Page 30
34-43-00
Sep 25/94
E39758
5) Control bus manager routine determining proper control configuration.
6) Problem control manager routine programming the internal data collection parameters of the R/T.
7) Data bus formatter routine processing and assembling the 64-bit control word of the serial word sent to the indicator.
(m)
Receiver/Transmitter Antenna Stabilization Functions 1) The R/T No. 1 receives continuous INS pitch and roll attitude stabilization inputs from INS No. 1.
2) The R/T No. 2 receives continuous INS pitch and roll attitude stabilization inputs from INS No. 2.
(n)
Receiver/Transmitter Antenna System Monitoring Functions
1) Weather radar system monitoring circuits in the R/T consist of performance monitoring hardware and built-in test equipment (BITE) software. The performance monitor continuously checks for proper transmitter power output and proper receiver operation. If either the transmitter or receiver is operating improperly, fault messages will be displayed on the indicators. The weather radar internal BITE continually checks for proper operation of the control panel and antenna and valid INS attitude input data to the receiver/transmitter. In addition serial data control bus inputs to the receiver/transmitter are checked.
(o)
Input/output circuits provide the electrical interface circuitry for most of the receiver/transmitter rear connector signals. Many of these are routed through the central processing unit. Input/output circuits interface three ARINC 429 13-KHz serial data control bus inputs, two 100-KHz ARINC 429 serial data attitude bus inputs, and two 1-MHz data bus outputs. Several discretes input are used, including the antenna feedback signals (elevation and scan monitors) and installation program pins.
(p)
The overtemperature fault indicator on the front panel of the R/T monitors the cooling provided by the electrical/electronic cooling system at the R/T mount for the receiver/transmitters.
(14) Indicator Control Functions (Fig. 3)
(a)
The weather radar system indicator unit is a high resolution color indicator which displays weather, operating mode, and fault information on a 5-inch CRT. The CRT uses an X-Y raster scan.
(b)
R/T data bus No. 1 from R/T 1 enter the indicators on pins 5 and 6 to be processed by the manchester receiver. The manchester receiver accepts ARINC 453 data bus inputs from R/T No. 1 or R/T No. 2. The manchester receiver extracts the beginning of word sync (BWS), the end of word sync (EWS), the data, and the clock for use by the control and data word buffers.
EFFECTIVITY
AF 160, 162-171, 183, 184 CONFIG 4 01 Page 31 Sep 25/9434-43-00
MODE MESSAGE FAILURE/ALERT MESSAGE RANGE
SLOT 1 SLOT 2 SLOT 3
COLOR BAR
SLOT 4 MASTER/SLAVE TEST FAIL 80
20
T/R
LRU FAILURE ANT
(BLUE) SLOT
6,7,8,9
DSP
-01 IDNT S2 ATT 0.00
GAIN MESSAGE
SLOT 10 TARGET SYSTEM STABILIZATION IDENTIFICATION SLOT 12 STATUS
RANGE MARK INTERVALS (CYAN) SLOT 5
MAGENTA
RED
YELLOW
GREEN
TILT (BLUE) SLOT 14
MESSAGE (BLUE) SLOT 13
SLOT 11 AF 160,162-171
MODE MESSAGE FAULT/ALERT MESSAGE
RANGE COLOR BAR, SLOT 1 SLOT 2 SLOT 3
MASTER/SLAVE, FAILURE LOCATION SLOT 4 FAIL
80
TEST S2
IDNT ATT 0.00
SYSTEM MESSAGE SLOT 9
MAGENTA
RED
YELLOW
GREEN
TARGET TILT MESSAGE
STABILIZATION
IDENTIFICATION SLOT 8
MESSAGE
MESSAGE
SLOT 7SLOT 6
AF 183,184
NOTE: EXACT SIZE, SHAPE, AND LOCATION OF TEST BANDS IS NOT PARTICULARY IMPORTANT. EXISTENCE AND LOCATION RELATIVE TO EACH OTHER IS IMPORTANT. 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(110)
