datavideo SE-900 RS-422/232 Remote Control Protocol - Holdan.eu
datavideo SE-900 RS-422/232 Remote Control Protocol - Holdan.eu
datavideo SE-900 RS-422/232 Remote Control Protocol - Holdan.eu
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The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 9: 18h (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 10: 19h (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 11: 1Ah (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 12: 1Bh (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 13: 1Ch (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 14: 1Dh (base 16)<br />
The ID of <strong>SE</strong><strong>900</strong>’s EXT SLOT_ 15: 1Eh (base 16)<br />
(CHROMA KEY board)<br />
(EXTERNAL GENLOCK board)<br />
(PREVIEW board)<br />
(CG board)<br />
(SDI_OUT board)<br />
(AV & DV output board)<br />
(N.C.)<br />
The ID of <strong>SE</strong><strong>900</strong>’s AUDIO_DELAY_BD: 1Fh (base 16)<br />
3) Length<br />
The length is the sum of bytes from the header to the end.<br />
It is composed of 8 bits and the length must less than 128.<br />
Note: 06h (base 16) < Length < = 80h(base 16)<br />
4) Data<br />
Data block used by application layer.<br />
Refer to Section 3 ~ .<br />
5) Checksum<br />
The 8 bits checksum is obtain from header to the last data,<br />
and then convert to two numeric ASCII code.<br />
Checksum=header+ID+legth+data0+data1+…+last_data<br />
chksum_L=30h + (low nibble of checksum)<br />
chksum_H=30h + (high nibble of checksum shift to right 4bits)<br />
6) End<br />
The end byte is fixed to FFh (base 16).<br />
4
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