datavideo SE-900 RS-422/232 Remote Control Protocol - Holdan.eu

4.4.1 The Main Board Extension Command For CHROMAKEY
*******************************************************
Command code => 110(6Eh) = EXT_GET_CHROMAKEY_SOURCE
Parameter #1 = > NC
--- Answer ---
Parameter #1 = > CK No.: 30h~33h
Parameter #2 = > CK_FG: 30h~38h (CH1~CH8, BG)
Parameter #3 = > CK_BG: 30h~38h (CH1~CH8, BG)
*******************************************************
Command code => 111(6Fh) = EXT_SET_ CHROMAKEY _SOURCE
Parameter #1 = > CK No.: 30h~33h
Parameter #2 = > CK_FG: 30h~38h (CH1~CH8, BG)
Parameter #3 = > CK_BG: 30h~38h (CH1~CH8, BG)
--- Answer ---
Parameter #1 = > CK No.: 30h~33h
Parameter #2 = > CK_FG: 30h~38h (CH1~CH8, BG)
Parameter #3 = > CK_BG: 30h~38h (CH1~CH8, BG)
*******************************************************
Command code => 112(70h) = EXT_GET_ CHROMAKEY _NO
Parameter #1 = > NC
--- Answer ---
Parameter #1 = > CK No.: 30h~33h
Parameter #2 = > CK_FG: 30h~38h (CH1~CH8, BG)
Parameter #3 = > CK_BG: 30h~38h (CH1~CH8, BG)
*******************************************************
Command code => 113(71h) = EXT_SET_ CHROMAKEY _NO
Parameter #1 = > CK No.: 30h~33h
--- Answer ---
Parameter #1 = > CK No.: 30h~33h
Parameter #2 = > CK_FG: 30h~38h (CH1~CH8, BG)
Parameter #3 = > CK_BG: 30h~38h (CH1~CH8, BG)
Example: Set the source of CHROMAKEY No.1 to “FG=CH1,BG=CH5”.
The Control Data Stream= F0h,5Ah,0Ch,05h,01h,6Fh,30h,30h,34h,3Fh,35h,FFh
F0h, ID(5Ah) , Length(0Ch), 05h, 01h, Command code(6Fh), para#1(30h), para#2(30h),
para#3(34h),checksum_L(3Fh), checksum_M(35h), FFh
Checksum=F0h+5Ah+0Ch+05h+01h+6Fh+30h+30h+34h=5Fh
The Answer from SE900 = F0h,5Ah,0Ch,05h,01h,6Fh,30h,30h,34h,3bh,36h,FFh
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