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K81 relay 1 251C / 34-57-00
M6 advisory panel 1 251 L / 31-50-01
Circuit breaker :
- CB 87 "NAV GPS 1" 1 PL1 / WM
- CB17 (option) 1 210 218A WM
DESCRIPTION
A. A78 COMM.NOR-ILS/GPS transceiver (Figure 2)
The A78 COMM./VOR-ILS/GPS transceiver can provide :
- permanent aircraft position-related information (longitude and latitude),
- guidance and navigation information display in relation to a flight plan defined by the pilot. It also uses data stored in a data base card (11) inserted in the front panel of the equipment.
The A78 COMM./VOR-ILS/GPS transceiver is capable of tracking up to twelve satellites at the same time to compute a position.
The memory capacity of the GPS receiver can store :
- 1000 pilot-defined waypoints,
- 20 different flight plans of up to 31 waypoints each.
Mainly controlled by the two concentric knobs (6) at the R.H. of the front face, the A78 COMM./VOR-ILS/GPS transceiver can present a variety of information in a number of different page formats. One way to understand how the information is presented is to think of the transceiver various display types as chapters in a book, with numbered pages each.
The outer knob changes the chapters when the cursor function is disabled and is used to move the cursor when the function is enabled. The inner knob turns the pages when the cursor function is disabled and is used to modify the data in inverse video over the cursor when the function is enabled.
To change data in a page, use the cursor function. This function is an inverse video area on the display obtained by pressing momentarily the "PUSH CRSR" inner button. Rotate the outer knob to position the cursor and the inner knob to select the desired characters. Repeat this step as many times as necessary and validate ("ENT" pushbutton).
The outer knob is rotated to select the following chapters :
- NAV
- WPT
- AUX
- NRST
ARAR
Validity : GPS 1 - GNS 530 34-57-00Page 2
(Do JUN 04
Global Positioning System (GPS) — Identification and location of components
Figure 1
ARAR
Validity : GPS 1 - GNS 530 34-57-00Page 3
(DI) JUN 04
1 - "RNG" (Range) pushbutton
2 - -''54,1* (Direct to) pushbutton
3 - "MENU" pushbutton
4 - "CLR" (Clear) pushbutton
5 - "ENT" (Enter) pushbutton
6 - Concentric knobs
7 - "PROC" (procedures) pushbutton
8 - "VNAV" pushbutton
9 - "FPL" (Flight plan) pushbutton
10 - "MSG" (Message) pushbutton
11 - Data base card
12 - ."OBS" pushbutton
13 - "CDI" pushbutton
14 - ".C" ON/OFF pushbutton
中国通航网 www.ga.cn
通航翻译 www.aviation.cn
本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(64)
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