Code Command Comment
0x04 Brightness This command is used to adjust brightness (black level).
Host Monitor
Byte 03: L-Len = 0x02
Byte 04: H-Len = 0x00
Byte 08: Brightness value (0 .. 255)
Monitor Host
Byte 00: ACK = 0x06
Value 0 to 255 corresponds 0 to 100% of adjustment range.
0x05 Contrast This command is used to adjust contrast.
Host Monitor
Byte 03: L-Len = 0x02
Byte 04: H-Len = 0x00
Byte 08: Contrast value (0 .. 255)
Monitor Host
Byte 00: ACK = 0x06
Value 0 to 255 corresponds 0 to 100% of adjustment range.
4.3 DDM-Protocol
The DDM-Protocol and its commands have been defined for operation with Sony DDM compatible
monitor. The Raptor SQ2801 only implements those commands which the monitor supports. All other
commands will simply return success.
This protocol is only supported by RS232-2 or RS422 interface. For this the DDM protocol and the
appropriate interface must be selected in the OSD.
NOTE Data transmission with handshake signals is only supported by RS232-2 interface (see
section 2.3.4 page 24).
4 Serial Communication 51