1.8Compact Disc Operation

The two push buttons at the far right of the SL15-CD Option CD control the compact disk operation. Inserting the disc into the CD-15 remote player unit will automatically begin play.

The lower button (play/pause/advance) is used to play the disc from stop, pause play, and advance the track. When the disc is stopped, pushing the button starts play. A short push will pause play. A longer press advances the track. Holding the button acts as a intro/scan, playing the first two seconds of each track until released. The top button is used to stop and eject the disc. Press momentarily to stop, press and

hold to eject. Pushing BOTH buttons momentarily will cause the CD to “back up.” If pushed in mid song, it will back up to the beginning of the track. At the beginning of a song, it will go back to the previous track.

This “back-up” feature implemented with Software Release BBBB for units without IRS and FBBBB for units with IRS and later. The software version is found on the side of unit by serial label. Holding BOTH buttons in for more than two seconds will cause the CD player to power down.

NOTE

In order to restore CD operation you must cycle power on the SL15-CD.

1.9Marker Beacon

The optional Marker Beacon Receiver uses visual and audio indicators to alert you when the aircraft passes over a 75 MHz transmitter.

The Blue lamp, labeled "O," is the Outer Marker lamp and has an associated 400-Hertz 'dash' tone. The lamp and tone will be keyed at a rate of two tones/flashes per second when the aircraft is in the range of the Outer Marker Beacon.

The Amber lamp, labeled "M," is the Middle Marker lamp and is coupled with a 1300- Hertz tone. It is keyed alternately with short 'dot' and long 'dash' bursts at 95 combinations per minute.

The White lamp, labeled "I," is the Inner marker and has a 3000-Hertz 'dot' tone. The lamp and tone will be keyed at a rate of six times per second.

The audio from the Marker Beacon Receiver can be heard by selecting the "MKR" push-button switch. To adjust the volume level, there is a service adjustment located on the top of the unit.

A three-position switch is used to set the receiver sensitivity and to test the indicator lamps. Use "HI" sensitivity initially. This allows you to hear the outer marker beacon about a mile out. Then select the “LO” sensitivity to give you a more accurate location of the Outer Marker. The momentary down switch position is marker test, labeled "T/M" and illuminates all three lamps simultaneously to assure the lamps (internal and external) are in working order. TST does not activate MM sense output.

Pressing the marker mode select down (to “T/M”) will cause the marker audio to mute for that beacon. The next beacon received will re-activate the audio.

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