Axis 221 0221-004 Manuale Utente

 
Please see the online help 

for descriptions of each available option.

The camera tampering application generates an alarm whenever the camera is 

repositioned, or when the lens is covered, sprayed, or severely defocused.

You must also create an event, see How to set up a triggered event, on page 28, for the 

camera to send an alarm.

Settings 
Minimum duration - This parameter sets the minimum tampering period, i.e. an alarm 

will not be triggered until this period has elapsed, even if the tampering conditions are 

otherwise met. This can help prevent false alarms for known conditions that affect the 

image. 

Alarm for dark images  - If the camera lens is sprayed or covered so that the camera live 

view becomes dark, it will not be possible to distinguish this situation from other situations 

where the same effect is seen, i.e., when lighting conditions change.

When this paramater is enabled, alarms will be generated for all cases where the lights are 

either dimmed or turned off, or if the lens is sprayed, covered, or severely defocused. If not 

enabled, no alarm will be sent. 

After making these settings, click Save.