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The VHF NAV/COMM transceiver also converts to DC signals (UP/DOWN and warning flag) the GS signal from the antenna.
A110 NAV converter of the EFIS system receives the composite LOC signal and GS DC signals from the VHF NAV/COMM transceiver.
A110 NAV converter converts these signals into ARINC 429 data and sends these data to A104 symbol generator of the EFIS system for display purposes.
ANTENNE
GS
GS
ANTENNA
SEPARATEUR
DE SIGNAUX
GS
GS SIGNAL
SEPARATOR
ANTENNE
VOR
VOR
ANTENNA
SEPARATEUR
DE SIGNAUX
VOR
VOR SIGNAL
SEPARATOR
CONVERTISSEUR
DE NAV
NAV
CONVERTER
SYSTEME
EFIS
> EFIS
NAV 1 SYSTEM
ARINC 429 ( 34 - 28 - 00 )
VERS NAV 2 VERS NAV 2 TO NAV 2 TO NAV 2
EMETTEUR /
RECEPTEUR
VHF - NAV / COMM VHF - NAV / COMM TRANSCEIVER
( 34 - 25 - 00 )
DONNEES FREQUENCE
SYSTEME DME
FREQUENCY DATA
DME SYSTEM
( 34 - 55 - 00 )
CASQUE
HAUT PARLEUR HEADSET LOUDSPEAKER ( LS )
"RM.SWITCH"
BUS 3
RELAIS GENERAL RADIO
RADIO MASTER RELAY
ON
INTERRUPTEUR GENERAL RADIO
RADIO MASTER SWITCH
NAV 1 Installation - Electrical schematic
Figure 5
NAV 2 INSTALLATION
DESCRIPTION AND OPERATION
1. GENERAL (Figures 1 and 1A)
The VOR is a short- and middle-range navigation aid. It enables the pilot to locate the position of his aircraft with regard to a half line (radial) crossing the VOR station or also to determine the particular radial crossing the aircraft position.
In ILS operation (landing aid), the system allows a continuous guidance in azimuth (LOC) and in elevation (GLIDE slope approach plane).
The optional system consists of :
- a VHF NAV / COMM transceiver,
- a course deviation indicator.
The system uses the VOR / LOC antenna, the GS antenna, the VOR and GS (option) signal separators. All these elements are known at the NAV 1 installation - refer to 34-51-00.
The system is connected with :
- the optional DME installation - refer to 34-55-00,
- the audio control box - refer to 23-11-00.
The VHF NAV/ COMM transceiver combines, in a single unit, a VHF COM transceiver and a 200-channel VHF VOR / LOC receiver with a 40-channel glideslope receiver / converter option.
The CDI can include an UP / DOWN glideslope needle with an associated warning flag. The system is electrically supplied by "BUS 3" bar via the "COM / NAV 2" circuit breaker.
2. LOCATION (Figure 2)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
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本文链接地址：TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 2(9)
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