Test and Indications

You do a test of the these VOR/MB receiver 1 functions at the same time:

· VOR function

· MB function.

There is a test switch and two light emitting diodes (LEDs) on the front panel of the VOR/MB receiver.

Flight Fault Memory

The VOR/MB receiver has a nonvolatile flight fault memory.

Only shop personnel can read the memory.

MARKER BEACON ANTENNA

General

The marker beacon antenna receives signals from marker beacon ground stations.

Six screws hold the antenna to the fuselage.

DISPLAYS AND AUDIO OUTPUTS

General

When the airplane goes above a marker beacon transmitter, marker beacon data shows on the primary flight display (PFD).

If you want to hear marker beacon audio, you select the marker beacon audio on the audio control panel (ACP).

Display Types

OM shows when the airplane goes above the outer marker. The OM letters are cyan.

MM shows when the airplane goes above the middle marker.

The MM letters are yellow.

IM shows when the airplane goes above the inner marker, backcourse marker, or an airways marker. The letters IM are white.

NCD/Fail Display

If marker beacon data fails or is no computed data (NCD), the display does not show.

Audio General

The ACP supplies control signals to the remote electronics unit (REU). The REU uses the control signals to select the audio that goes to the flight interphone speakers and headsets.

Use the ACP to listen to marker beacon audio.

Audio Operation

You make these ACP selections to listen to marker beacon audio:

· Push the marker beacon receiver volume control to make the marker beacon audio come on

· Turn the marker beacon receiver volume control to change the volume level.

Audio Outputs

These are the marker beacon audio outputs:

· Outer marker (OM) is 400 Hz, continuous dashes (- - - -)

· Middle marker (MM) is 1300 Hz, alternate dots and dashes (-.-.-.-.-)

· Inner marker (IM) is 3000 Hz, continuous dots (......)

· Backcourse marker is 3000 Hz, continuous paired dots (.. .. .. ..)

· Airways marker is 3000 Hz with the morse code. identifier for that station.

Date: 2015-12-17; view: 1310