
154 • Configuring the ViconNet System XX112-36-00 Rev 909 Kollector Hybrid Network Digital Video Recorder
4. In the Select devices for pre/post alarm area, select the devices from the Available area that you
want to be affected by the pre alarm and post alarm settings and click
to add them to the
Selected area.
NOTE: You can remove a device from the Selected area by selecting it and then clicking Remove.
The device is redisplayed in the Available area.
5. Select the required Recording Duration (mm:ss) settings for the pre/post alarms, as follows:
• Pre alarm: When an alarm is activated in the system, this option causes the system to immediately
save the data prior to the alarm of the selected devices to the storage location. The data is saved
according to the selected duration, the selected Recording Duration setting and the Video and
Mode settings, as described in the subsequent steps in this procedure.
Select the required time segment and then use the up/down arrows to scroll to the required value,
-AND/OR-
Select the required time segment (mm or ss) and then use the keyboard to type in a numerical
value.
• Post alarm: When an alarm is activated in the system, this option causes the system to
immediately begin recording the selected devices for the selected duration.
Select the required time segment, as described in the Pre alarm option above.
NOTE: Pre alarm and post alarm settings are not directly related to macros and can run without macros
being configured in the system. When different recording options are requested concurrently, the
recorded Quality and FPS that applies is determined according to prioritization settings. For details,
refer to the Picture Quality and FPS Priority section, page 135.
The MAX fields in the Pre/Post Alarm Settings window (page 153) are read-only fields. The maximum
times are the highest possible limits. These upper limits displayed in the MAX fields changes according
to the selected number of cameras, quality, mode, FPS and transmitter type. The actual recorded
duration may differ from the duration requested. (The default MAX values are five minutes for pre alarm
and ten minutes for post alarm.
If pre\post alarm is defined in the Quality and FPS Priority window as first priority and the Pre alarm
recording duration in the Pre/Post Settings window is not set to 00, the recording is performed
according to the quality requested in the Pre/Post Alarm Settings window, even though no alarm
occurred. If pre\post alarm is defined in the Quality and FPS Priority window as first priority and
Pre alarm recording duration is set to 00 (meaning, do not save in a buffer), the recording is performed
according to the second priority function selected in the Quality and FPS Priority window (either quality
of auto record or user/macro) and only after an alarm occurs, the recording is performed according to
the quality defined in the Pre/Post Alarm Settings window – for the duration defined in the Post alarm
recording duration field.
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