User’s Manual
DVR-4TN/8TN/16TN/16TS/16TT Series
SPECO TECHNOLOGIES 01/08
98
Area Threshold
<Area Threshold> means the motion alarm triggered level; if the percentage
of triggered grids to total detection area is greater than the set value, the
motion alarm will be triggered.
For example, if 10 grids are selected and the < Area Threshold > value is 70%,
the motion alarm will be triggered when 7 grids are motion detected.
Move the cursor to < Area Threshold > and press ENTER, then use UP /
DOWN keys to adjust the value. The value is indicated in 4% increments.
Detected Area Percentage
This part shows the percentage and variation of the detected volume.
5.6.7.5 Alarm In
This item allows the user to enable / disable alarm input detection. According
to your application, select <N/O> (Normal Open) or <N/C> (Normal Close) to
enable the alarm input detection or select <OFF> to disable detection. The
default setting is <OFF>.
NOTE: If you set this item to <N/C> but did not install any device to the unit,
the alarm will be triggered and the Event Icon will be displayed continually
until this item is changed to <N/O>, <OFF> or, install a device to the unit.
5.6.7.6 Alarm Out
This item allows the user to assign an alarm on a certain channel to activate
the relays. These signals can be used to drive a light or siren to caution an
alarm event.
Select from the options: <A Only> indicates “Alarm Out A”, <B Only> indicates
“Alarm Out B”, <A+B> indicates “A and B Alarm Out” and <None> indicates
“No Alarm Out”. The default setting is <None>.
5.6.7.7 Digital Deterrent
If an alarm is triggered while Digital Deterrent is enabled, a pre-recorded
audio warning will be sent to the speaker installed nearby the location where
the alarm was triggered. For instance, if the alarm of Channel 2 is triggered
and there is a speaker installed to the DVR nearby, the speaker will play the
audio warning.
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