127
Step 8.
Set the motion sensitivity of image which will trigger the “video freeze” alarm. Adjust the
sensitivity according to the signal being monitored, on a range of
1
(for filtering out noise in a
noisy signal) to
128
(for a clean signal). If the “sensitivity” level is set very low, a slight difference
in frame by frame content comparison (e.g., a talk show video where the background is constant
and the only motion detectable is the announcer’s lip movement) may trigger the alarm. In this
case consider increasing the “sensitivity level” or “set duration” (next item) values.
Step 9.
Set the “video freeze” alarm response time (second).
Video Black
and
Video Freeze
cannot happen simultaneously. When both conditions exist,
Video
Black
has the higher priority.
Likewise, both functions are not available for analog input signal.
Step 10. Select
“On” in “Alarm Sound”
”Video”
”Enable” to enable playback of alarm sound when
no video / video black / video freeze is detected in a particular image source window.
Step 11.
Set the “video alarm” sound playback duration (second) for particular image source window.
Step 12. Click
“Change” in “File” to choose another alarm sound to play when video alarm occurs for the
particular source image window.
Click the
“browse” button to select the location of the audio file. Click “Play” to hear a sampling of
the alarm sound selected. Then click
“OK” to exit.
