NEC NRS Expanded Series, Руководство по настройке

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ISSUE 1.0
9-12 VCA Alarm
5a. Check the Audio Input Exception checkbox to enable the audio loss detection
function.
5b. Check the Sudden Increase of Sound Intensity Detection checkbox to detect
the sound steep rise in the surveillance scene. You can set the detection
sensitivity and threshold for sound steep rise.
Sensitivity: Range [1-100] The smaller the value, the more severe the change
should be to trigger the detection.
Sound Intensity Threshold: Range [1-100] It filters the sound in the
environment; the louder the environment sound, the higher the value should be
set. You can adjust it according to the real environment.
5c. Check the Sudden Decrease of Sound Intensity Detection checkbox to detect
the sound steep drop in the surveillance scene. You can set the detection
sensitivity[1-100] for sound steep drop.
6. Click Apply to activate the settings.
S
ECTION
15 S
UDDEN
S
CENE
C
HANGE
D
ETECTION
The scene change detection function detects the change of surveillance environment
affected by the external factors; such as the intentional rotation of the camera. When
the alarm is triggered, certain actions can be taken.
Refer to Section 3 Face Detection on page 9-2 for operating steps to configure the
scene change detection.
The Sensitivity in the Rule settings ranges from 1 to 100, and the higher the value,
the more easily the change of scene can trigger the alarm.
S
ECTION
16 D
EFOCUS
D
ETECTION
The image blur caused by defocus of the lens can be detected and some certain
actions can be taken when the alarm is triggered.
Refer to Section 3 Face Detection on page 9-2 for operating steps to configure the
defocus detection.
The Sensitivity in the Rule Settings ranges from 1 to 100 and the higher the value,
the more easily the change of scene can trigger the alarm.