Samsung SyncMaster 550DX User Manual page 34

• Screen Mode Control
• Function
Personal Computer changes "Screen Mode" of TV or Monitor.
Cannot be controlled when Video Wall is on.
Caution
Only works with models include TV.
• Get Screen Mode Status
Header
0xAA
• Set Picture Size
Header command
0xAA
Screen Mode : Screen Mode code to be set on TV or Monitor
0x01
0x04
0x31
0x0B
• Ack
com-
Header
mand
0xAA 0xFF
Screen Mode : Same as above
• Nak
com-
Header
mand
0xAA 0xFF
ERR : Error code that shows what occurred error is
• Screen Size Control
• Function
Introduction
command
0x18
ID
0x18
16 : 9
Zoom
Wide Zoom
4 : 3
DATA
Length
ID
3
DATA
Length
ID
3
DATA Length
ID
0
DATA DATA
Length
1 Screen
Mode
Ack/Nak r-CMD
'A' 0x18
Ack/Nak r-CMD
'N' 0x18
CheckSum
CheckSum
Val1
Check
Sum
Screen
Mode
Val1
Check
Sum
ERR