9.8PRIORITIZING OPERATORS
As the system can be controlled by more than one keyboard at the same time, it is sometimes possible to have a situation where a conflict of monitor access and PTZ camera control arises.
The
With the exception of priority code (0), the level of priority relates directly to numerical code assigned (that is, 1= highest, 99= lowest). Priority code (0) indicates a special right of access. It is one which always has an exclusive access right (higher access level) over every other priority code (other than another 0).
CAUTION: The control of other system devices, like VCRs, motion detectors, and so on, are also prioritized accordingly.
The following table illustrates how the
Priority conflict | Operational Outcome |
|
|
HIGHER verses LOWER | The Higher priority operator displaces the Lower priority |
| operator from the monitor. |
|
|
SAME priority levels | Both operators have equal (and concurrent) access to the |
| monitor. |
|
|
EXCLUSIVE verses | The Exclusive priority operator always displaces |
| priority from the monitor (except for another exclusive |
| priority). |
|
|
EXCLUSIVE verses EXCLUSIVE | The first Exclusive priority operator will prevent the other |
| from accessing the monitor, on a first in, first served basis. |
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|
|
|
Table 9.1: Settling Conflicts In Monitor Access
The above table also applies when controlling PTZ cameras, VCRs and other device, even when the keyboard operators are selecting the same device on separate monitors.
WARNING: Control priorities are only asserted when a keyboard control action occurs and not when the device is selected for display.
Rev. A | HMXMU001056 | |
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| 03/16/05 |