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Audio Control Panel Controls. The audio control panels (ACP) permit the crew to listen to VOR station audio or the morse code station identifier



The audio control panels (ACP) permit the crew to listen to VOR station audio or the morse code station identifier.

You use the ACP volume control switches to select the VOR/MB system you want to listen to. The NAV 1 volume control selects the VOR/MB receiver 1 audio and the NAV 2 volume control selects VOR/MB receiver 2 audio.

The voice/range selector permits you to listen to only voice audio in the voice (V) position. The range ® position permits you to listen to the station morse code identifier. With the selector in the both (B) position, you can listen to both the voice audio and the morse code station identifier.

 

 

 

VOR SYSTEM - RADIO MAGNETIC INDICATOR DISPLAYS

General

The radio magnetic indicator (RMI) shows bearing data to a VOR or ADF station with reference to the airplane magnetic heading.

The RMI has two bearing pointers. There is a fail flag for bearing pointer 1, and a fail flag for bearing pointer 2. The bearing pointer 1 and flag 1 show bearing and status from the VOR/MB receiver 1 or ADF receiver 1. The bearing pointer 2 and flag 2 show bearing and status from the VOR/MB receiver 2 or ADF receiver 2.

Set the bearing pointer VOR/ADF selectors to VOR to show VOR bearing on bearing pointers 1 and 2.

With the VOR/ADF selectors in the VOR position, the fail flags show for invalid data from the VOR/MB receivers.

 

 

 

VOR SYSTEM - EFIS NORMAL DISPLAYS

General

VOR data shows on the captain and first officer displays. To show VOR displays, you must select the VOR mode on the EFIS control panels and enter a valid VOR frequency on the NAV control panels.

Bearing Pointers

Bearing pointers 1 and 2 show in green around the edge of the compass rose when you set the VOR/ADF switches on the EFIS control panels to the VOR position. There is a pointer head and tail for both bearing pointers. The bearing pointers show on the expanded displays if the VOR bearing is in the compass rose display limit. The bearing pointers can show VOR data in the APP, VOR, and MAP modes.

The DEUs remove the bearing pointers when the VOR bearing from the VOR/MB receivers is NCD. The DEUs also remove the bearing pointers when you set the VOR/ADF selector switches on the EFIS control panels to OFF.

The NAV data source shows in green at the bottom left and right corners of the display for bearing pointers 1 or 2. The display also shows the frequency or identifier for the active station.



Deviation Bar and Scale

The VOR deviation bar shows in magenta. The DEUs use VOR bearing from the VOR/MB receivers and course inputs from the DFCS mode control panel to calculate VOR deviation. The scale is the standard four dot scale. One dot equals five degrees of deviation.

The DEUs remove the deviation bar for NCD deviation inputs from the VOR/MB receivers.

Selected Course Pointer

The course select control on the DFCS mode control panel sets the position of the selected course pointer.

TO/FROM Pointer and Indicator

The TO/FROM pointer is a small white triangle that shows as part of the selected course pointer. The TO/FROM pointer shows on the centered VOR display only.

The TO/FROM indicator shows at the bottom right corner of both the centered and expanded VOR displays. The DEUs use VOR bearing from the VOR/MB receivers and course inputs from the DFCS MCP to calculate TO/FROM pointer and indicator displays.

The TO indication shows when you enter a course on the DFCS MCP that takes you to the VOR station. The FROM indication shows when you enter a course that takes you away from the VOR station.

The DEUs remove the TO/FROM pointer and indicators for NCD and invalid displays.

NAV Data Source

The DEUs show the source of the data for the ND display in the upper right corner. The normal source for the captain NAV display is the VOR/MB receiver 1 and the normal source for the first officer is the VOR/MB receiver 2.

VOR Frequency

The VOR frequency shows in the upper right next to the NAV data source. The frequency from the NAV control panel goes through the VOR/MB receivers, then to the DEUs for display. The frequency shows in green. IF the VOR receiver gets a valid station identifier from the VOR station, the station identifier replaces the VOR frequency.



The DEUs change the VOR frequency to dashes for NCD inputs from the VOR/MB receivers.

 

 


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