UMD 9000 series, Руководство пользователя

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UMD NVR User Manual
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The factory default setting is all-day recording, video recording mode is timed. Period
of time cannot be set cross, and the time period is not available across days. If a certain
period of time is not checked any video mode, this period has no video.
If you select the motion detection or alarm linkage recording, the recording will start
from N seconds before the alarm occurs, N is pre-recorded time that be set, pre-recorded
time should be in the range of 5-10 seconds, the default is 5 seconds.
If a period of time just checks the "motion detection", please note that in 【IPC
Management】 - 【video detection】 page, linked the corresponding video channel, motion
detection recording to take effect.
5.4.3 Video Control
Reference Section 5.3.3 。