Axis 241QA Manual de usuario descargar pdf (Pagina 42)

AXIS 241QA/AXIS 241SA - Event configuration

Camera tampering

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 s

et up a triggered event, on page 40) for the

camera to send an alarm.

Settings

The Minimum duration parameter sets the minimum tampering period,

that is an alarm

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

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

image.

If the camera lens is sprayed or covered so that

the camera’s live view becomes dark, it will

not be possible to distinguish this situation from other situations where the same effect is

seen, such as when lighting conditions change.

When the Alarm for dark images parameter

is enabled, alarms are 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 is sent.

After you define these settings, click Save.

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Axis 241QA Manual de usuario Pagina 42