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Appendix A: Camera control protocol
111
Comman
d
s:
Notation of the general syntax:
y All separate entities in a message are represented between curly brackets, e.g.
{CRC}
y Literal strings are between quotes, e.g. 'P'
y Logical entities are neither between brackets nor quotes, e.g. Mic.-No. (microphone number)
y A logical entity will also contain a number between brackets. This number states how many characters the entity exists of, e.g.
(4)
y If the subtext
1+
is attached to the entity between curly brackets, this means that one or more occurrences of this entity may occur
General syntax General meaning Examples
{'%'}{'1'}{'R'}{'00'}{CRC(4)} The first microphone is activated. %1R0053
The first microphone is activated.
The camera control is activated.
{'%'}{'P'}{Mic.-No.(4)}{CRC(4)} The chairman unit is activated. %P00010111
The chairman unit is activated and it has the
microphone number '0001'.
{'%'}{'p'}{Mic.-No.(4)}{CRC(4)} The chairman unit is deactivated. %p00010131 The chairman unit '0001' is deactivated.
{'%'}{'M'}{Mic.-No.(4)}{CRC(4)} A delegate unit is activated. %M00030110
A delegate unit is activated and it has the
microphone number '0003'.
{'%'}{'m'}{Mic.-No.(4)}{CRC(4)} A delegate unit is deactivated. %m00030130 The delegate unit '0003' is deactivated.
{'%'}{'1'}{'r'}{'00'}{CRC(4)}
All active microphones are deactivated and the
camera control should reset itself to a neutral
starting position.
%1r000052
The camera control should reset itself to its
starting position.
{'%'}{'S'}{Mic.-No.(4)}
1+
{CRC(4)}
At a time interval of approx. 5 seconds, a
synchronization message is sent to the camera
control.
The message contains all the numbers of the
active microphones or the number 0 to stipulate
that there are no microphones active.
%S00030116
Synchronization check while only the delegate unit
with the microphone number '0003' is active.
%S000200030004029C
Synchronization check while the delegate units
'0002', '0003' and '0004' are active.
{'%'}{'S'}{0(4)}{CRC(4)} %S00000113 No microphones are active.
{'%'}{'V'}{'0000'}{CRC(4)}
All active microphones are deactivated
simultaneously.
%V00000116
All active microphones are deactivated
simultaneously.