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34-53-00 ADF DESCRIPTION/OPERATION
CONTENTS:
General
Auto Tuning
Manual Tuning
Back Up Tuning
Antennae
LGCIU
Indicating
CFDIU
Self Examination
TMUADFA01 LEVEL 3
EFFECTIVITY 34-53-00 Page 1
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 449
ALL
ADF DESCRIPTION/OPERATION
GENERAL
The Automatic Direction Finder (ADF) System includes:
- 2 Identical ADF receivers,
- 2 Identical ADF antennae.
NOTE: ADF 2 system is optional.
AUTO TUNING
In NDB approach each Flight Management and Guidance
Computer (FMGC) automatically tunes its ownside ADF
receiver through its ownside Radio Management
Panel(RMP).
With failure of one FMGC, the other FMGC can control
the two ADF receivers, one directly, the other through
its Radio Management Panel (RMP).
When the FMGC fails, the ADF receives a discrete
through the RMP to automatically select port B.
MANUAL TUNING
From each Multipurpose Control and Display Unit (MCDU)
both ADFs can be manually tuned through their ownside
FMGC .
BACK UP TUNING
In case of dual FMGC failure, the RMPs enable BACK-UP
tuning.
ANTENNAE
The ADF antenna provides three signals and consists
of one sense antenna and two loop antennae called
longitudinal antenna and lateral antenna.
The ADF antenna comprises:
- One pre-amplifier, for each antenna, supplied
by the ADF receiver in + or - 12 VDC.
- A test loop which enables a self test.
The ADF ground stations operate in a frequency range
of 190 to 1750 KHz divided into two parts:
- Non Directional Beacons (NDB):
190 to 550 KHz,
- Standard commercial broadcast AM stations:
550 to 1750 KHz.
LGCIU
Each Landing Gear Control Interface Unit (LGCIU) sends
discrete signals to the associated ADF receiver.
This Ground/Flight information is used by the receiver
BITE module to count the flight legs.
TMUADFA01-T01 LEVEL 3
EFFECTIVITY 34-53-00 Page 2
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 450
ALL
ADF DESCRIPTION/OPERATION
TMUADFA01-P01 LEVEL 3
EFFECTIVITY 34-53-00 Page 3
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 451
ALL
ADF DESCRIPTION/OPERATION
INDICATING
The ADF data is sent to the Navigation Displays (NDs)
through the Display Management Computers (DMCs) and
also to the DDRMI.
The ADF audio signal is processed by the receiver and
sent to the Audio Management Unit (AMU) and can be
heard by the crew.
NOTE: Some DDRMIs are not equipped with the ADF
capability.
CFDIU
The MCDUs allow the systems to be tested and trouble
shooting to be performed via the Centralized Fault
Display Interface Unit (CFDIU).
The tests are only available on ground.
TMUADFA01-T01 LEVEL 3
EFFECTIVITY 34-53-00 Page 4
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
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ALL
THIS PAGE INTENTIONALLY LEFT BLANK
TMUADFA01 LEVEL 3
EFFECTIVITY 34-53-00 Page 5
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 453
ALL
SELF EXAMINATION
How are the antenna amplifiers supplied ?
A - By the 28 DC NORM BUS.
B - By the 115 VAC NORM BUS.
C - By + or - 12 VDC through the ADF
Receiver.
If FMGC 1 has failed, is the ADF 1 receiver tuned ?
A - Yes, from the opposite FMGC.
B - Yes, through RMP1.
C - No, ADF 1 cannot be tuned.
TMUADFA01 LEVEL 3
EFFECTIVITY 34-53-00 Page 6
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 454
ALL
34 - NAVIGATION
34-53-00 ADF INDICATIONS ON ND
CONTENTS:
ADF Characteristics
ADF Pointers
NDB Pushbutton
Failures
Self Examination
TMUADFB02 LEVEL 2
EFFECTIVITY 34-53-00 Page 1
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 455
ALL
ADF INDICATIONS ON ND
ADF CHARACTERISTICS
DISPLAY IN ROSE OR ARC MODE
When the mode selector is set to ROSE or ARC mode, and
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