PLUG PLUG
KINGS KA-59-29 KINGS KA-59-29
RG-141/U OR EQUIV (20 FEET)
TEST CABLE REQUIRED TO CHECK CAPTURE ANTENNA RF CABLE SEGMENT BETWEEN NOSE GEAR DOOR AND STATION 361 DISCONNECT
VOR/ILS Glide Slope Antenna System Test Cable
Figure 102
EFFECTIVITY ALL
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34-31-12
Sep 25/94
E47778
A. Install nose gear door locks.
WARNING:_______REFER TO 32-00-30 FOR LOCK INSTALLATION PROCEDURE. RAPID ACTION OF DOORS MAY INJURE PERSONNEL OR DAMAGE EQUIPMENT IF LOCKS ARE NOT PROPERLY INSTALLED.
B. Provide electrical power (Ref 24-22-00).
C. Verify that appropriate circuit breakers on panels P7, P12 and P126 are closed.
D. Set captain's and first officer's VHF NAV control panel frequency selectors to authorized localizer test frequency.
E. Set the RADIO/INS switch to RADIO and the VOR/ILS transfer switch to NORMAL position (captain on No. 1 and F/O on No. 2 system).
F. Install aluminum foil tape over the glide slope antennas which are not under test or disconnect the parallel rf runs not under test at the station 400 hybrid coupler(s).
G. Position signal generator on the ground approximately 75 feet from the airplane per Fig. 101.
NOTE: When checking the capture antennas, be sure that the vertical
____ position of the signal generator is the same for testing both the left and right door antennas. For example, DO NOT set the generator on the ground for one side and in the back of a truck for the other.
H. Setup signal generator to transmit an on-course glide slope test signal with the correct polarization for the antenna being checked (Fig. 101). The track antenna requires a horizontally polarized test signal and the capture antenna requires a vertically polarized test signal. On airplanes with the glide slope capture antenna installed in the nose radome a horizontally polarized test signal is required.
NOTE: The area within 100 feet of the signal generator must be free of
____ metallic objects such as aero stands, service carts, trucks, buildings or other obstructions. Otherwise, the compared test values will be out of tolerance as shown in Fig. 101 by the typical field strength variations to be expected when testing an antenna system with nearby obstructions.
EFFECTIVITY
ALL 03 Page 118 Sep 25/9434-31-12
DISCONNECT STATION 360 P W1229-RN4329 J W1235-RN4329 DB405A 1 RN4007 W1313- B RN4007 WO15-
IN DB405B J P A1
B561 DB561 D3205 DB405C 2 D1039 DB62B G/S ANT IN
TRACK ANTENNA A DB405D 3 5 DB405D
RIGHT AFT NOSE WHEEL WELL DOOR DB405D 4
3W1191-RN4007 C RN4007 W1237- COXAIAL 1 DB405D NO.2 GS DM809 36 (E1-3) MN EQPT CTR B62 VOR/ILS RCVR NO.2
P J RELAY 2 DB405D 28V DC
D5586 3 S1182 GEAR UP
GS 2 ANT VOR/LOC TEST INHIBIT
2 GND B405 GS ANT SW COAXIAL M809 ALT LDG LOGIC UNIT
1 28V DC 3 GND DIM AND TEST TO MASTER (P32) STA 400, WL 190, LBL30 (P2) TEST SW RELAY STA 400, WL 173, RBL 29 DB195C 13 AFCS VOR/LOC
ILS OR LAND
L2152 G/S 2 MODE AND
ANT ANN (P2) A, B, OR C,
IN CMD
B195 AFC ACC BOX
DB66B (E1-5) MN EQPT CTR
B66
GS A B
ANT CAPTURE B559 TRACK ANTENNA DB559A P J W1323-RN7007 J W113-RN7007 P A1
STA 140 2 2 W919-RN7007 G/S ANT IN
WL 192.5 BL 0 RN7007 W1321- D3263 1 D1019 DB301B
DB66A RADOME NOSE DISCONNECT STATION 360 RN3007 W1227- P A W1231-RN3007 J 1 RN3007 W1061- DB554A (P31) STA 400, WL 179, LBL 30 B554 GS ANT HYBRID DB554D 1 MN EQPT CTR (E1-2) RCVR NO. 3 B301 VOR/ILS
DB559 D3203 DB554C
B559 TRACK ANTENNA WN1311- 1 B
3W1189-RN3329 LEFT AFT NOSE WHEEL WELL DOOR W1233-RN3329 DB404A 1 IN DB404B RN3329 W1311-RN3007 J P A1
P J DB404C 2 2 G/S ANT IN
D2964 DB61B
3D5585 DB404D 3 5 DB404D W013-RN3007
D DB404D 4
B61 VOR/ILS RCVR NO.1
COXAIAL 1 DB404D NO.1 GS DM93 35 (E1-2) MN EQPT CTR
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本文鏈接地址：747飛機維護手冊AMM CHAPTER 34 - NAVIGATION 第34章導航2(49)
