The Passenger Entertainment System (PES) is energized during normal operation
A. Energization
(1) The electrical power for the PES music is available when:
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The busbars are energized
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The circuit breakers are closed
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The relays 800MH and 801MH operate
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The AUDIO softkey is pushed (the AUDIO softkey is highlighted by colour change)
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The PES/ON/OFF softkey is pushed (the PES ON/OFF softkey is highlighted by colour change)
B. Operation of the PCU control keys
(1) The PCU control keys for the F/C are:
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The VOLUME membrane switch, with the left-pointing triangle When that membrane switch is pushed, the volume increases
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The VOLUME membrane switch, with the right-pointing triangle When that membrane switch is pushed, the volume decreases
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The CHANNEL membrane switch, with the left-pointing triangle When that membrane switch is pushed, the channel number increases
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The CHANNEL membrane switch, with the right-pointing triangle When that membrane switch is pushed, the channel number decreases
(2) The PCU control keys for the Y/C are:
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The VOLUME membrane switch, with the up-pointing triangle When that membrane switch is pushed, the volume increases.
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The VOLUME membrane switch, with the down-pointing triangle When that membrane switch is pushed, the volume decreases.
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The CHANNEL membrane switch, with the up-pointing triangle When that membrane switch is pushed, the channel number increases.
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The CHANNEL membrane switch, with the down-pointing triangle When that membrane switch is pushed, the channel number decreases.
C. The boarding music The boarding music is controlled by the Flight Attendant Panel (FAP) (Ref. 23-32-00).
R **ON A/C 051-099, 201-210,
D. System Characteristics
The system characteristics are as follows:
(1)
The frequency response, from 25 Hz to 15 kHz +/- 3 dB.
(2)
The number of audio inputs, 33 maximum (max. 24 audio tape player, 6 movie/audio tape player, 3 PA override).
(3)
The key lines, 3 video and 3 PA.
(4)
The output level, 100 mW/ear minimum.
(5)
The output impedance, 300 ohms.
(6)
The number of selectable programs, a total of 18.
(7)
The number of stereo/mono programs, 12/18 or combination.
(8)
The signal-to-noise ratio, 75 dB.
(9)
A stereo channel separation, 60 dB minimum.
(10)
The harmonic distortion, 0.2 % maximum at 100 mW.
(11)
A dynamic range, 75 dB minimum.
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(12) The audio compression, switchable 20 dB on movie/video. R **ON A/C 106-149, 211-299, 301-399,
D. System Characteristics
The system characteristics are as follows:
(1)
The frequency response, from 50 Hz to 15 kHz +/- 3 dB.
(2)
The number of audio inputs, 25 maximum (max. 16 audio tape player, 6 movie/audio tape player, 3 PA override).
(3)
The key lines, 3 video, 3 PA and 1 PES
(4)
The output level, 100 mW/ear minimum.
(5)
The output impedance, 300 ohms.
(6)
The number of selectable programs, a total of 18.
(7)
The number of mono programs, 18 .
(8)
The signal-to-noise ratio, 65 dB.
(9)
A stereo channel separation, 80 dB minimum.
(10)
The harmonic distortion, 0.1 % maximum at 50mW.
(11)
A dynamic range, 75 dB minimum.
(12)
The audio compression, switchable 20 dB on movie/video.
1EFF : 051-099, 106-149, 201-299, 301-399, 1 23-33-00Page 66 1 1 May 01/05 1 1 1CES 1 PASSENGER ENTERTAINMENT (MUSIC) - MAINTENANCE PRACTICES
_______________________________________________________
TASK 23-33-00-860-002
Replacement of the Compact Disks for the Passenger Entertainment System (PES)
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM Communications 通讯1(172)
