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Distribution





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The video system control unit sends control signals and three video signals to the video distribution units. The video system control unit tells each video distribution unit when to turn on the monitors and which video signal to send to the monitors. One video distribution unit controls two monitors.

The video system control unit sends the audio from the video program to the passenger entertainment system - audio (PESaudio).

The PES-audio distributes the audio to the passenger control units in the passenger seats. Passengers connect headsets to the passenger control units and set the control for the video channel when they want to listen to the video program.

When you want the audio to go the speakers in the cabin, the video system control unit sends the audio to the passenger address system. The passenger address system distributes the audio to the speakers in the cabin.

 

 

 

Cabin

 

The video control center is in the overhead stowage bin on the right side in the aft end of the cabin. The video control center has these components:

* Video tape reproducers

* Video system control unit.

 

The forward attendant panel is at the forward attendant station.

 

Cabin

 

There are video monitors in the passenger service units (PSUs) above the passengers.

 

The video distribution units (VDUs) are above the ceiling. The VDUs are in groups. A VDU group has one, two, three, or fourVDUs.

Electronic Equipment Compartment

 

Power

 

The 28v dc bus 2 supplies power to these components:

 

* Digital interface unit

* Video tape reproducers

* Video system control unit.

 

The 115v ac main bus 2 supplies power to these components:

 

* Video system control unit

* Video tape reproducers.

 

Power

 

The video distribution units (VDUs) receive a signal from the video system control unit (VSCU) to turn on the video monitors.

When the VDUs receive the signal, they supply 115v ac power to the video monitors.

 

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