Hybrid Standalone NVR User Guide 3 Local Menu Operations
Figure 3-42
Anti-dither
This feature sets a delay period before triggering the next alarm, to avoid re-triggering on the same
event for screen prompt, alarm upload, and email notifications. The delay period begins when the
current event has ended, not including the latch time. The value ranges from 5s to 600s. For
example, if you set an anti-dither time of 10 seconds, the activation will last 10seconds when a local
alarm is activated. If another local alarm signal is detected before these 10 seconds have elapsed, the
buzzer, tour, PTZ activation, snapshot, and record channel will be activated for another 10 second
period. However, the screen prompt, alarm upload, and email will not be activated again. After the
10-second anti-dither time has elapsed, a new alarm signal will be generated when another alarm is
detected.
Alarm Out
Check the box to enable the external alarm when the event triggers. In the boxes to the immediate
right, enable which camera(s) will record when the event occurs.
Latch
Select the time in seconds that the system delays after the external alarm has ended before turning
off the alarm and the activated output. This feature sets a postponement period before another
external alarm can be activated. Value ranges from 10 to 300 seconds.
Show Message
Enable Show Message to pop up a warning dialog on the local monitor displaying which alarm has
occurred.
NVR4200 Series User Guide
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