UNIVIEW NVR30104P4, Руководство пользователя

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in the Select Day drop-down list. In the following example, motion
detection recording is enabled on the set holiday.
Holiday Snapshot
Holiday snapshot is similar to holiday recording. First you set holidays
under System > Holiday , and then configure a snapshot schedule under
Storage > Snapshot . Set a snapshot schedule as described in Scheduled
Recording . Make sure Holiday is selected from the Select Day drop-
down list.
Other Recording and Snapshot Types
Other recording and snapshot types:

Event: Including the types below and VCA. Any of these types will
trigger event recording/snapshot.

Motion detection AND alarm triggered (M and A for short):
recording or snapshot is triggered only when a motion detection
alarm AND an input alarm occur simultaneously.

Motion detection OR alarm triggered (M or A for short): recording
or snapshot is triggered when a motion detection alarm OR an
input alarm occurs.
When you choose an Event type of recording or snapshot, make sure
you have enabled the corresponding alarm function and configured