Kramer VP-23, Руководство пользователя, Страница: 13 / 15

VP-23 Communication Protocol
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NOTE 6 – This is a request to identify the switchers in a system. If the INPUT is set as 1 or 2, the machine will send its
name. The reply is the decimal value of the INPUT and the OUTPUT. For example, the reply to the request to send the
machine’s name (for machine #001) will be:
0111 1101
1000 0000 (i.e. 128+0)
1001 0111 (i.e. 128+23)
1000 0001
If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software version
number. Again, the reply would be the decimal value of the INPUT and OUTPUT – the INPUT representing the number in
front of the decimal point, and the OUTPUT representing the number following the decimal point. For example, for version
3.5 the reply will be:
0111 1101
1000 0011 (i.e. 128+3)
1000 0101 (i.e. 128+5)
1000 0001.
Table 7: Video and Audio Switch Commands (HEX)
OUT 1 (CV GROUP) OUT 2 (Y/C GROUP) OUT 3 (VGA GROUP)
01 01 01
80 80 80
81 82 83
OFF
81 81 81
01 01 01
81 81 81
81 82 83
IN 1
81 81 81
01 01 01
82 82 82
81 82 83
IN 2
81 81 81
01 01 01
83 83 83
81 82 83
IN 3
81 81 81
01 01 01
84 84 84
81 82 83
IN 4
81 81 81
Table 8: Audio Switch Commands (HEX)
MASTER AUDIO OUTPUT
02
80
81
OFF
81
02
81
81
AUDIO OUT 1
81
02
82
81
AUDIO OUT 2
81
02
83
81
AUDIO OUT 3
81
02
84
81
AUDIO OUT 4
(MICROPH.)
81