ELRO FA420DVR 4-ch digital recorder + 500 gb hard disc USERS MANUAL - Manual (Page 32)

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marked "R";
Detect: During specified time range, trigger “motion detection”, “video masking”, and
“video loss” alarm signals. The corresponding alarm settings will turn on the
recording function and start test recording. The type of video file is marked “M”;
Alarm: In specified time period, trigger the external alarm signal. "Alarm Input” setting will
turn on the recording function and start test recording. The type of video file is
marked “A”.
Note: For “Alarm Function” settings, refer to Alarm Function section in Chapter 4.3.
4.2.2 Image Storage
Set snapshot parameters on monitoring channels. At initial startup, the system defaults to 24
hours continuous snapping. Corresponding settings can be defined by entering
【
Main Menu
】>【
Video
Recording Functions
】>【
Image Storage
】
Note: For normal operation of image storage, at least one of the installed hard drives needs to be set as
the Snapshot disk. (Refer to Chapter 4.5.1 Hard Drive Management for details).
Figure 4.2 Image Storage
【
Channel
】
Select proper channel for Channel Setup. Choose ALL if applying the settings to all
channels;
【
Pre-Snap
】
Set number of pre-snaps that capture the moments before an event. Default is 5
snapshots