Camera head control (CDC)
66
Siemens Building Technologies
Fire Safety & Security Products
06.2008
z
Keyboard x only controls camera y:
There may be a requirement for a keyboard to control just one camera, or there
may only be one CDC camera in the system. It is possible to allocate a single
CDC camera to the keyboard under these exceptional circumstances.
Caution
Automatic control is only possible if the CDC camera is switched to the monitor.
(Camera parameters can be programmed using the arrow keys)
9.2 Control
priorities
z
No priority:
The ‘no priority’ status can be allocated to each device.
(Set using the arrow keys)
z
Priority: x:
A priority of 0 to 10 can be allocated to each keyboard.
(Set using the arrow keys)
If two keyboards have been allocated the same priority, the CDC camera will be
controlled by the keyboard, which transmits the last control command.
The parameter settings of keyboards T11-T13 are relevant for the serial interfaces
for the connection of external computers, such as IVM. These keyboards can also
be allocated control priorities.
9.3
Maintaining control priority precedence
When two keyboards attempt to gain access simultaneously, the keyboard with the
higher priority takes precedence. A time delay can be set here to avoid the camera
reacting to a different, lower priority device immediately after control command
processing.
z
No requirement to maintain control priority precedence:
The camera settings can be changed immediately by control commands
transmitted by another keyboard.
(Set using the arrow keys)
z
The priority is stable for x seconds:
The priority can be maintained for up to 99 seconds.
The camera settings can only be altered by control commands transmitted by a
different, lower priority keyboard after the set period of time has elapsed.
(The delay time can be set using the arrow keys)