(b)
Push the RUN/STOP key to start the self test.
1) Make sure the test set display shows PASSED.
(c)
Push the SETUP key on the test set.
(d)
Measure the distant between the ATC antenna and the test set in feet.
(e)
Put the measured distant into the RANGE field for the top and bottom entry.
(f)
Put the height, measured from the ground up, of the top ATC antenna into the HEIGHT field for the TOP antenna entry.
(g)
Put the height, measured from the ground up, of the bottom ATC antenna into the HEIGHT field for the BOTTOM antenna entry.
NOTE: You must use the top and the bottom antenna for the
____
system test to be complete.
(h)
Choose the bottom antenna on the SELECTED field.
(i)
Put the gain of the antenna in the 1030_ and 1090_ GAIN field.
NOTE: The antenna gains are listed on the test set antenna.
____
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
34-53-00
ALL ú ú 02 Page 514 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(j) Put the loss of the cable in the LOSS field.
NOTE: The cable loss is listed on the test set antenna cable.
____
(k)
Use the SLEW keys to change the values.
(l)
Use the SELECT keys to change the items.
(m)
Use the SELECT keys to select the antenna which you must test.
S 865-318
WARNING: YOU MUST CAREFULLY FOLLOW THE STEPS IN THE GIVEN TASK TO
_______ PREPARE THE SAFETY SENSITIVE SYSTEMS FOR THE AIR MODE. FAILURE TO FOLLOW THE STEPS CORRECTLY CAN CAUSE THE AUTOMATIC OPERATION OF THE AIRPLANE SYSTEMS. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(9)
Do the "Prepare Safety-Sensative Systems for Air Mode Simulation" task (AMM 32-09-02/201).
S 865-319
(10)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel: 1) 7F22, LANDING GEAR DSP & CONT PRI 2) 7F23, LANDING GEAR DSP & CONT ALTN 3) AIRPLANES WITH THE "GND SAFETY RELAY" CIRCUIT BREAKER
INSTALLED AT PANEL GRID LOCATION 7H08; 7H08, GND SAFETY RELAY
S 865-320
(11) Push the STD switch on the captain's and first officer's EFIS control panel.
NOTE: This is the same as setting the baro correct to 29.92 inches
____
on mercury.
(a) Make sure the captain's PFD and first officer's PFD shows STD.
F. ATC System Test
S 865-323
CAUTION:_______DO NOT USE CODES 7500, 7600-7677 AND 7700-7777. THESE ARE CODES USED ONLY IN EMERGENCY SITUATIONS.
(1)
On the ATC control panel, set the code switches to a desired ATC ID code.
S 865-324
(2)
Set the transponder select switch on the ATC control panel to the left or No. 1 system.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
34-53-00
ALL ú ú 02 Page 515 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(3) S 865-432Set the mode switch on the ATC control panel to the XPNDR position.
(4) S 865-036Push the AUTO TEST key on the test set.
(5) S 865-417Use the RUN/STOP key to start or stop individual test.
(6) S 865-368Use the SELECT key to select each individual test.
(7) S 735-180Do a check of the REPLY DELAY TEST. (a) Make sure the reply delay is 128.00us (|0.50us) for mode S and ITM. (b) Make sure the reply delay is 3.00us (|0.50us) for ATC A and C.
(8) S 735-181Do a check of the REPLY JITTER TEST. (a) Make sure the reply jitter is 0.08us for mode S and the reply jitter is 0.1us for ITM A and C. (b) Make sure the reply jitter is 0.1us for ATC A and C.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 导航 NAVIGATION 3(63)
