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VERS BOITE
COMMANDE
AUDIO
TO AUDIO
CONTROL BOX
( 23 -11 - 00 )
Global Positioning System (GPS) - Electrical schematic
Figure 1
2. LOCATION (Figures 2 and 3)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
A78 GPS receiver 1 251C / 34-50-00
E48 GPS antenna 1 210 / 34-57-02
J89 "data loader" jack 1 250 / 34-57-00
Filter (option) 2 230 251 L 34-57-00
Blower 1 230 211R 34-57-00
M6 advisory panel 1 251L / 31-50-01
Circuit breaker : - "GPS" 1 230 232L WM
3. OPERATION
NOTE : For equipment operation and maintenance, refer to the supplier's Maintenance Manual.
AKAK
Validity : KLN 89B Stand alone 34-57-00 (EA, Page 3
NOV 01
A - A78 GPS receiver
B - E48 GPS antenna (Pre-MOD. 151) C - J89 "data loader" jack
D - "MSG / WPT" annunciator
E - E48 GPS antenna (Post-MOD. 151)
00
Global Positioning System (GPS) - Identification and location of components
Figure 2
AKAK
Validity : KLN 89B Stand alone 34 57 00Page 4
(EA) NOV 01
®
14345700AAAPVZ4000
Global Positioning System (GPS) - Identification and location of components
Figure 3
AKAK
Validity : KLN 89B Stand alone 34-57-00(EA) 5
(EA) NOV 01
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GLOBAL POSITIONING SYSTEM (GPS)
DESCRIPTION AND OPERATION
1. GENERAL (Figure 1)
The GPS is a system of radio-navigation by satellites which allows to solve the problem of an aircraft location anywhere (tridimensional positioning : latitude, longitude, altitude).
The optional system consists of :
- an A78 GPS receiver,
- an E48 GPS antenna,
- an E023 relay box,
- an A92 relay box,
- a J89 "data loader" jack,
- a removable data card (mounted in the front of the GPS receiver). The GPS also uses components of M6 advisory panel - refer to 31-50-01 :
- the switch / annunciator "NAV 1 - GPS",
- the switch / annunciator "GPS APR ARM - GPS APR ACTV",
- the annunciator "MSG - WPT",
- the K1 relay,
- two load resistors for NAV 1 receiver's OBS resolver.
The GPS also uses the "RADIO MASTER" switch.
The GPS gets :
- altitude coding information from the encoding altimeter - refer to 34-11-00,
- data from the optional SHADIN fuel flow system - refer to 73-30-00. The GPS sends :
- an altitude - alert audio signal to the audio control box - refer to 23-11-00,
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本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(75)
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