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Alarm Settings
Pre-alarm and Post-alarm Recording
The video server can record images from the
point immediately preceding an alarm (pre-alarm
recording) and images that occur after the alarm
is received (post-alarm recording).
The alarm data for a single pre- and post-alarm
event from each channel that has been set to
allow alarm recording can be recorded in the
video server's internal memory. The ratio
between the spaces available for pre-alarm and
post-alarm recording can be set using the
BUFFERING AREA command in the ALARM
SET menu. The default setting is "0" for
pre-alarm recording and "10" for post-alarm
recording. In this case, the COMPRESSION
RATIO and RESOLUTION setting values for
images in the live image screen can be changed
regardless of the alarm settings. (Figure 1)
However, if the BUFFERING AREA settings are
changed so that the PRE/POST ratio is 0/10 to
1/9 or something greater than this (so that
pre-alarm recording is carried out), the
[PRIORITY] and [ALARM RESOLUTION]
settings will be displayed in the set positions on
the live image screen. In this case, the setting
values are fixed, and so they cannot be changed
using the drop-down list box. The [IMAGE
MODE] setting at this time will also be fixed at
"COLOR". (Figure 2)
In addition, if [PRIORITY] is set to "PICTURE
QUALITY", the compression ratio setting in the
live image screen will be "STEP5", and if it is set
to "TIME", then "STEP2" will be fixed.
Note:
When the alarm recording capacity is filled,
pre-alarm recording is canceled. Accordingly,
the setting for the drop-down list box in the live
image screen will no longer be fixed.
English
– 41 –
Figure 1
Figure 2
ID3
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