Acer AT2001 Service Manual page 29

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Sound Systems
The System has a feature that allows reception of sound other than the main audio for the program.
This feature is called Multi-channel Television Sound (MTS). The System with MTS can receive mono
sound, stereo sound and Secondary Audio Programs (SAP). The SAP feature allows a TV station to
broadcast other information, which could be audio ( mono ) in another language or something completely
different like weather information.
The images display examples when receiving MTS and SAP are as follows:
Input Sound Mode
Stereo Mode
Main + SAP Mode
Stereo + SAP Mode
Mono Mode
• Stereo broadcasts
View programs like live sporting events, shows and concerts in dynamic stereo sound.
• SAP broadcasts
Receive TV broadcasts in either MAIN or SAP sound.
MAIN sound: The normal program soundtrack (either in mono or stereo).
SAP sound: Listen to second language, supplementary commentary and other information. (SAP
is mono sound.)
• Once "MONO" mode is selected, the sound remains mono even if the System receives a stereo
broadcast. You must switch the mode back to "STEREO" if you want to hear stereo sound again.
• Selecting MPX while in the input mode does not change the type of sound. In this case, sound
is determined by the video source.
Sound Key Pressed
Stereo
Mono
Main
SAP
Stereo
SAP
Mono
Mono
Dual
Mono

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