11.10.4
Measurements configuration
Video > Image Monitor > VCA Settings
The default Measurements values will mostly work well for you. If you do need to modify them
you can do so in the VCA Settings section.
Item
Description
Configure Alarms
Min. event duration
Alarm output delay time: the time span that is
to elapse before a continued change in
conditions actually activates/deactivates the
alarm output.
Alarm output
True or False. Indication of current status.
Configure Focus
Measurement
Allow you to enable/disable each measurement separately and
customise its alarm threshold and hysteresis to your requirements.
Configure
Exposure
Measurement
Configure
Contrast
Measurement
Configure SNR
Measurement
Configure
Evaluation Rate
The value entered here determines the speed at which the host
machine processes the algorithms underlying the measurements.
Higher values take up more CPU power.
Auto Configure
Adjusts the alarm thresholds, based upon the current measurements.
The green area is centred around the current pointer position.
Reset to Default
Restores the original thresholds. Does not affect the current activity
status of the measurements (i.e. being Enabled or Disabled).
Tip: A PTZ camera moving from one preset to the next may trigger an alarm if the scene
change takes too long. Setting an appropriate time for the Min. event duration parameter
can delay the alarm output until the camera has adopted the new position and the alarm
condition has ceased.
Video
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