GE A Series : A1255 - Manual (Page 72)

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The video output signal can be switched to NTSC or PAL to
accommodate different regional standards. The appropriate
setting will vary between regions.
NTSC: USA, Canada, Taiwan, Japan, etc.
PAL: Europe, Asia (excluding Taiwan), Oceania, etc.
Note: The TV output will not display properly if an incorrect
video system is selected.
Use this setting to determine your video system in the current
area.
1. Select the Video System in Connection Setup menu.
2. Use the Up/Down navigation buttons to select NTSC or
PAL. Then press the button to confirm.
Video System
CONNECTIONS