Axis Communications Axis 211A - Manual (Page 38)

38 AXIS 210A/211A - Event Configuration
Please see the online help for descriptions of each available option.
Note: Up to 10 event types can be configured in the cameras, and up to 3 of these can be configured to upload
images. Files names can be formatted according to specific requirements. See File Naming & Date/Time
Formats online help.
Pre-trigger and Post-trigger buffers
This function is very useful when checking to see what happened immediately before
and/or after a trigger, e.g. 5 seconds before and/or after a door was opened. Check the
Upload images checkbox under Event Types > Add Triggered... > Triggered by... . All
uploaded images are JPEG images.
Include pre-trigger buffer - images stored internally in the server from the time
immediately preceding the trigger. Check the box to enable the pre-trigger buffer, enter the
desired length of time and specify the required image frequency.
Include post-trigger buffer - contains images from the time immediately after the trigger.
Configure as for pre-trigger.
Notes: Pre-trigger and Post-trigger buffers are lost if the connection to the event server fails.
The maximum length of the pre-/post-buffer depends on the video image size and selected frame rate.
If the pre- or post-buffer is too large for the camera’s internal memory, the frame rate is reduced and indi-
vidual images may be missing. If this occurs, an entry is created in the unit's log file.
Continue image upload (unbuffered) - enables the upload of video images for a fixed
length of time. Specify the length of time for the uploaded recording, in seconds, minutes
or hours, or for as long as the trigger is active. Finally, set the desired image frequency to
the maximum (the maximum available) or to a specified frame rate. The frame rate is the
best possible, but might not be as high as specified, especially if uploading via a slow
connection.
Scheduled Event
A Scheduled event can be activated at preset times, in a repeating pattern on selected
weekdays.
Configuration example:
1. Click Add scheduled on the Event types page.
2. Enter a descriptive name for the event, such as “Scheduled e-mail upload.”
3. Set the priority (High, Normal or Low).
4. Set the Activation Time parameters (24h clock) defining when the event is active,
e.g. start on Sundays at 13.00 for a duration of 12 hours.
5. Set the When Activated... parameters, defining what the camera does at the
specified time, such as send uploaded images to an e-mail address.