Kramer VP-727A-BA User Manual page 29

INSTRUCTION
T-BAR POSITION
HEADPHONE SOURCE
PREVIEW
HEADPHONE SOURCE
PROGRAM
READ HEADPHONE SOURCE 25
SEND CHANGED AUDIO
PARAMETER INSTRUCTION
NOTES on the above table:
NOTE 1:
The reply to these instructions is:
- 1st byte: 0x40 + 1st byte sent
- 2nd byte: Same as 2nd byte sent
rd rd
- 3 byte: Same as 3 byte sent
th
- 4 byte: Same as 4th byte sent
Example:
1st byte
Send 0x02
Reply 0x42
NOTE 2:
In the case of an error, the reply code will be:
st
- 1 byte: 0x50
nd rd th
- 2 , 3 and 4 byte – don't care
NOTE 3:
The reply to these READ commands is:
st st
- 1 byte: 0x40 + 1 byte sent
nd
- 2 byte: Same as the data that was sent
rd
- 3 byte: Requested data (as defined by the command which sets this parameter)
th
- 4 byte: 0x81
Example:
Read Preview Input 3 Level. The reply in this case tells us that the level is 0x17
1st byte
Send 0x19
Reply 0x59
Example:
Read Program Input #. The reply in this case tells us that the Input 4 is connected to the Program output
1st byte
Send 0x06
Reply 0x46
NOTE 4:
In the case where the VP-727A-BA is in "FADE" mode (ie, not "CUT" mode), it will send this command via RS-232 after it
has completed the transition.
Kramer VP-727A-BA Protocol (Ver. 3.21)
st
1 Byte 2
23 80
24 80
24 80
80
3F 80
2nd byte 3rd byte 4th byte
0x81 0x81 0x81
0x81 0x81 0x81
2nd byte 3rd byte 4th byte
0x93 0x80 0x81
0x93 0x97 0x81
2nd byte 3rd byte 4th byte
0x81 0x80 0x81
0x81 0x84 0x81
nd rd
Byte 3 Byte
80+Value
80
81
80
81
th
4 Byte COMMENT
81 Value 0~112
See NOTE 1
81 See NOTE 1
81
81 See NOTE 3
81 See NOTE 7
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