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Alarm Setting
Pre-alarm and Post-alarm Recording
The camera 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 can be recorded in the camera’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 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 change 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 displayed.
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.
Figure 1
Figure 2
L5AB2/US (VCC-WB2000) GB 2002, 7, 4
– 42 –
English