K
L
M
N
O
P
画中画/信号源互换(PIP/SWAP)
观赏模式 (WIDE)
休眠 (SLEEP)
菜单 (MENU)
频道 (CH﹀ / CH＾)
电源 
Toggles between input sources for the Main and Sub pictures.
Change Aspect Ratio.
Set timer to turn off the Display.
Display menu or exit OSD menu.
Sequentially scrolls between channels.
Power ON/OFF.
ViewSonic | 11 | N4200w |