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UF94200
EFFECTIVITY Page 18
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RADIO MANAGEMENT PANEL PRESENTATION
TMUCOMB03-P01 LEVEL 1
EFFECTIVITY 23-13-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 23 COMMUNICATIONS
UF94200
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RADIO MANAGEMENT PANEL PRESENTATION
NAVIGATION KEYS
The NAVigation guarded pushbutton key allows the radio
navigation systems to be selected, in back-up mode
only, when the Flight Management and Guidance Computers
(FMGCs) have failed. In radio navigation back-up mode,
only RMP1 and RMP2 can perform navigation
frequency/course selection using the dual selector
knob.
ON/OFF SWITCH
The latching ON/OFF switch allows the crew to set the
RMP on or off.
TMUCOMB03-T01 LEVEL 1
EFFECTIVITY 23-13-00 Page 4
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
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SELF EXAMINATION
What happens if RMP2 fails?
A - The communication systems are inoperative
B - VHF2 frequencies cannot be controlled.
C - All communication frequencies can be
controlled.
TMUCOMB03 LEVEL 1
EFFECTIVITY 23-13-00 Page 5
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MECHANICS / ELECTRICS & AVIONICS COURSE 23 COMMUNICATIONS
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THIS PAGE INTENTIONALLY LEFT BLANK
TMUCOMB03 LEVEL 1
EFFECTIVITY 23-13-00 Page 6
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
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23 - COMMUNICATIONS
23-10-00 RADIO MANAGEMENT PANEL INTERFACES
CONTENTS:
Radio
Navigation
FMGCs
CFDIU
LGCIUs
RMP Failure
Self Examination
TMUCOME03 LEVEL 3
EFFECTIVITY 23-10-00 Page 1
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 23 COMMUNICATIONS
UF94200
EFFECTIVITY Page 23
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RADIO MANAGEMENT PANEL INTERFACES
RADIO
RMP 1 and RMP 2 have two ARINC 429 data buses connected
to the radio communication transceivers:
- COM BUS 1 delivers the VHF 1 frequency,
- COM BUS 2 delivers the VHF 2 frequency.
Three dialog buses ensure exchange of information
between the three RMPs. Each RMP periodically transmits
its context on its dialog bus.
Each RMP can control any radio transceiver but is more
particularly dedicated to one system.
Basic allocation:
- RMP 1 ® VHF 1
- RMP 2 ® VHF 2
- ATSU ® VHF 3
Possible allocation (depending on options):
- RMP 1 ® VHF 1
- RMP 2 ® VHF 2
- ATSU ® VHF 3
- RMP 3 ® HF 1
NAVIGATION
If the standby navigation mode is selected, the
navigation systems frequencies are controlled by RMP
1 and RMP 2 only. The standby navigation is selected
in the event of failure of both FMGCs.
In this condition :
- RMP1 controls VOR 1, ADF 1 and ILS 1 and 2.
- RMP2 controls VOR 2, ADF 2 and ILS 1 and 2.
For ILS functions, MMR 1 and 2 receivers always operate
on the same frequency which can be controlled from any
RMP, either directly or through the cross talk bus.
FMGCs
In normal operation, the navigation systems are tuned
automatically (or manually from the MCDUs) by the FMGCs
via internal relays of the onside RMPs. The RMP is
thus transparent to the onside FMGC.
In case of failure of one FMCG, the onside navigation
systems are tuned directly by the remaining FMGC.
CFDIU
The BITE functions of the system are available through
the CFDS.
LGCIUs
In order to increment the fault memories in case of
CFDIU failure, each RMP receives a discrete giving the
landing gear configuration.
RMP 1 receives this discrete from LGCIU 1, and RMP 2
and 3 from LGCIU 2.
RMP FAILURE
The system architecture allows access to all
communication functions in case of failure of any RMP.
But, if RMP1 or RMP 2 fails, the onside navigation
systems are lost.
An RMP failure is indicated by the blanking of the
display windows. Should a failure occur, the failed
RMP has to be switched off. When selected off, the RMP
sends a discrete signal which enables system
reconfiguration.
TMUCOME03-T01 LEVEL 3
EFFECTIVITY 23-10-00 Page 2
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 23 COMMUNICATIONS
UF94200
EFFECTIVITY Page 24
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