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indications:
* The DME fail condition for two seconds
* The DME NCD condition for the next two seconds
* The DME normal condition to end the test.
The DME normal condition is the distance that shows before the
test starts.
DME indications also show in the lower left (VOR 1) and lower
right (VOR 2) corner of the ND when you select VOR on the
VOR/ADF switches on the EFIS control panels.
DME SYSTEM - TEST DISPLAY
EFFECTIVITY
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DME SYSTEM - TEST DISPLAY
DME SYSTEM - TEST DISPLAY
EFFECTIVITY
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General
This page is for reference.
DME SYSTEM - SYSTEM SUMMARY
EFFECTIVITY
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DME SYSTEM - SYSTEM SUMMARY
DME SYSTEM - SYSTEM SUMMARY
EFFECTIVITY
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Purpose
The automatic direction finder (ADF) system is a navigation aid.
The ADF receiver uses amplitude modualted (AM) signals from
ground stations to calculate the bearing to the ADF station from
the airplane longitudinal axis. The ADF system also receives
standard AM radio broadcasts.
Abbreviations and Acronyms
* AC - alternating current
* AM - amplitude modulated
* ACP - audio control panel
* ADF - automatic direction finder
* AM - amplitude modulation
* ant - antenna
* app - approach
* ARINC - Aeronautical Radio, Inc.
* BFO - beat frequency oscillator
* Capt - captain
* DC - direct current
* DEU - display electronics unit
* EFIS - electronic flight instrument system
* F/O - first officer
* gnd - ground
* Hz - hertz
* LCD - liquid crystal display
* LRU - line replaceable unit
* nav - navigation
* NCD - no computed data
* QEC - quadrantal error correction
* RBL - right buttock line
* RMI - radio magnetic indicator
* sta - station
* V - volts
* VOR - VHF omnidirectional ranging
* xmtr - transmitter
AUTOMATIC DIRECTION FINDER SYSTEM - INTRODUCTION
EFFECTIVITY
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AUTOMATIC DIRECTION FINDER SYSTEM - INTRODUCTION
AUTOMATIC DIRECTION FINDER SYSTEM - INTRODUCTION
EFFECTIVITY
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Description
The ADF control panel supplies manual tune inputs to the ADF
receivers. The ADF antenna assemblies contain the loop
antennas and the sense antennas. There are two ADF
antennas, one for ADF receiver 1 and one for ADF receiver 2.
The ADF receiver calculates the bearing to the ADF ground
stations and sends it to the DEUs for display. The ADF bearing
also goes to the radio magnetic indicator (RMI). The ADF
receiver processes audio from the ground stations and sends it
to the remote electronics unit (REU).
ADF SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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ADF SYSTEM - GENERAL DESCRIPTION
ADF SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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ADF System Components
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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