Status And Data Replies; Command List; Operation Mode; Matte Settings - Datavideo DVK-300HD Instruction Manual

Status and Data Replies

Sync Byte Byte Count
Item Description
Sync Byte 0xAA
The total number of subsequent bytes in the block (from command
Bytes Count
byte to Checksum byte).
Command Error
Response Message Command Accepted
Data Message
Checksum (Sum of Response Message) & 0xFF

10.2 Command List

Operation Mode

Select between Chroma key, Luma key, or Disable processing
Command Code 0x10
0x01
Parameter 1 0x02
0x03
Keying mode
0x01
0x02
0x03
Background color
Parameter 2
0x01
0x02
Background color tone detection
0x00
0x01
Return
Item Sync Byte Byte Count
Command Error 0xAA
Command Accepted 0xAA

Matte Settings

Matte settings
Command Code 0x11
Parameter 1 0x01
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Response Message Checksum
Set keying mode
Set background color
Background color tone detection
Chroma
Luma
Disable
Blue (chroma) / Black (luma)
Green (chroma) / White (luma)
Off – Default color
On – Detect real color tone
Response
Message
0x02 0x40
0x02 0x80
Set matte Black
33
0x40
0x80
Data
Checksum In Response To
0x40 Invalid Command
Valid Write
0x80
Command