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In transmission mode, the function selector of A50 audio control panel enables to connect the push-to-talk and microphone lines to the A78 COMM./VOR-ILS/GPS transceiver inputs. Switching to transmission mode can therefore be obtained either by the push-to-talk switches located on the control wheels, or by the hand microphone control button. Actuating the push-to-talk switch triggers the transmission mode of the transceiver. A modulated VHF signal is transmitted in all directions by the antenna.
AIAI
Validity : GNS 530 23-12-00 (GO) Page 5 JUN 04
B. "Ground Clearance" function
When the main switch is open, a momentary action on K200 switch controls "Ground Clearance" function. The K201 relay connects electric power supply lines of COM1, NAV1 installations and GPS1 system and of audio control panel directly to the battery. The indicator of the K200 switch illuminates to indicate that the function is active. The K202 relay de-activates "Ground Clearance" function when the main switch is closed.
AlAl
Validity : GNS 530 23 12 00 (c., Page 6 JUN 04
BOITE DE COMMANDE AUDIO
AUDIO CONTROL BOX
( 23 - 11 - 00 )
r...-.•••11MWAINI11„
ANTENNE
ANTENNA
EMETTEUR - RECEPTEUR COMM. / VOR - ILS / GPS
COMM. / VOR - ILS / GPS TRANSCEIVER
"COM1"
0
a
RELAIS GENERAL RADIO
RADIO MASTER RELAY
"RM - SWITCH" cD.
ON
INTERRUPTEUR GENERAL RADIO
RADIO MASTER SWITCH
AIAI
Validity : GNS 530 COM 1 installation — Wiring diagram
Figure 4 - Without "Ground Clearance"
23-12-00 (c.) Page 8 JUN 04
BOITE DE COMMANDE AUDIO
AUDIO CONTROL BOX
( 23 - 11 - 00 )
irer.MMA=•.--_\
EMETTEUR - RECEPTEUR COMM. / VOR - ILS / GPS
COMM. / VOR - ILS / GPS TRANSCEIVER
CB16
VERS BATTERIE
TO BATTERY
"COMl"
BUS 1
O
(1- o
RELAIS GENERAL RADIO
RADIO MASTER RELAY
"RM - SWITCH"
OFF
ON
INTERRUPTEUR GENERAL RADIO
RADIO MASTER SWITCH
AIAI
Validity : GNS 530 COM 1 installation — Wiring diagram
Figure 4A - With "Ground Clearance"
23 12-00 (00) Page 9 JUN 04
PAGE INTENTIONALLY LEFT BLANK
AlAl
Validity : GNS 530 23-12-00 ,..) Page 10
JUN 04
E31 ANTENNA
MAINTENANCE PRACTICES
1. SERVICING
None
2. REMOVAL / INSTALLATION - E31 ANTENNA (Figure 201)
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本文链接地址：TB20 MAINTENANCE MANUAL 23 COMMUNICATIONS TB20飞机维护手册 通讯(34)
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