Dedicated Micros Digital Sprite Lite Setup Manual page 17

Record Schedule
The table below shows the record rates of typical VCR time-lapse modes:
Timelapse mode (hours)
12
24
48
72
Tip: To work out the update rate per camera – the number of seconds before the
camera is updated, divide the number of cameras by the record rate. For example,
16 cameras with a record rate of 6 PPS will be:
Update rate (seconds) = Number of cameras
Events active
Choose whether alarms and/or activity detection are on or off.
Event mode
This option determines if alarmed cameras are exclusively recorded, interleaved
with non-alarmed cameras, or left unchanged.
Recorded file size
The file or image size affects the quality of the images recorded to disk. A larger
file size has superior picture quality, but will fill the hard disk faster, so less time
will be recorded. The file size can be set between 6 and 30KB. The table below
shows the image quality at typical file sizes:
Image quality
VHS
S-VHS
S-VHS+
(Continued)
Record rate (PPS)
12
6
3
2
= 16 = 2.67 seconds
PPS 6
File size (KB)
14KB
18KB
25KB
Maximum recording time
The maximum recording time is the amount of time recorded before images are
overwritten. It is calculated automatically when the record rate (PPS) is selected
or changed.
Tip: The maximum recording time can be increased by lowering the file size or
record rate.
Total video storage
The figure displayed shows the total amount of internal and external (RAID) disk
capacity available for video storage.
Earliest recording
The date and time of the first image on the disk are displayed.
See Appendix 2 for information on selecting record rates for different hard disk sizes.
For further information on record rates, and to download an interactive record
rate calculator visit the Dedicated Micros web site at:
www.dedicatedmicros.com
Recording events only
Digital Sprite Lite can be configured to record cameras with activity or alarm
events only, which can increase the amount of time the hard disk can record for
before being overwritten.
To configure Digital Sprite Lite for event only recording:
1. Set the Standard PPS to 00.
2. Set the Event PPS to the desired record rate when an event is detected.
3. Select the 'Events active' option as either Both, Alarms, or Activity as required.
4. Select 'Event mode' option as Exclusive to record only cameras with alarms or activity.
Only activity or alarm events will now be recorded. Note that pre-alarm/activity is
not possible in this configuration.
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