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塞斯纳172飞行员操作手册 Cessna 172 PILOT'S OPERATING HANDBOOK(92)

时间:2011-12-29 11:03来源:蓝天飞行翻译 作者:航空 点击:

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AUTOMATIC AUDIO SELECTOR SWITCH
A toggle switch, labeled AUTO, can be used to automatically match the appropriate NAV / COM receiver audio to the transmitter being selected. To utilize this automatic feature, leave all NAV/ COM receiver switches in the OFF (center) position, and place the AUTO selector switch in either the SPEAKER or PHONE position, as desired. Once the AUTO selector switch is positioned, the pilot may then select any transmitter and its associated NAV/COM receiver audio simultaneously with the transmitter selector
 
AUTOMATIC AUDIO SELECTION
As illustrated, the number 1 transmitter is selected, the AUTO selector switch is in the SPEAKER position, and the NAV/COM 1, 2 and 3 and ADF 1 and 2 audio selector switches are in the OFF position. With the switches set as shown, the pilot will transmit on the number 1 transmitter and hear the number 1 NAV/COM re¬ceiver through the airplane speaker.
As illustrated, the number 1 transmitter is selected, the AUTO selector switch is in the OFF position, the number 1 NAV/COM receiver is in the PHONE position, and the number 1 ADF is in the SPEAKER position. With the switches set as shown, the pilot will transmit on the number 1 transmitter and hear the number 1 NAV/COM receiver on a headset; while the passengers are listening to the ADF audio through the airplane speaker. If another audio selector switch is placed in either the PHONE or SPEAKER position, itwill be heard simultaneously with either the number 1 NAV/COM or number 1 ADF respectively.
Figure 7-10. Audio Control Panel
 
switch. If automatic audio selection is not desired, the AUTO selector switch should be placed in the OFF (center) position.
NOTE
Cessna radios are equipped with sidetone capability (mon¬itoring of the operator's own voice transmission). Sidetone will be heard on either the airplane speaker or a headset as selected with the AUTO selector switch. sidetone may be eliminated by placing the AUTO selector switch in the OFF position, and utilizing the individual radio selector switches.
 
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