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Videoswitch
3 Recording
Unless specifically configured otherwise, the system will always be recording images from all cameras. Even
when you are playing back images, the system will continue recording.
When the record LED is on, this indicates that recording is taking place.
RECORD
3.1
Update Rates
This table gives an indication of the overall update rate in images per second that will apply for different
Image Retention settings (see section 10.4.3.1.1) and hard drive capacities assuming an average image
size of 20K bytes. Note that if the average image size is lower, update rates will be higher; if the average
image size is higher, update rates will lower.
To get the update rate per camera, divide the overall update rate by the number of cameras.
Image
Retention/ Drive
80G
Size
7 Days
14 Days
31 Days
1.5
60 Days
0.75
Note that 24-hour mode operation on a conventional VCR time-lapse recorder is about 5
second. The shaded cells in this table show where the update rate will be equal or better than a VCR in 24-
hour mode.
3.2
CD Capacity
This table gives an indication of the number of minutes of video that can be archived onto a 700Mbyte CD.
Note that all cameras are recorded.
Drive
Size/Image
80G
Retention
7 Days
88
14 Days
176
31 Days
352
Vdm601r.doc
120G
160G
6
10
12.5
3
5
2
1
120G
160G
58
44
118
88
252
190
320G
12.5
6
12.5
3
6
1.5
3
320G
500G
22
14
44
28
97
62
VDM Digital Recorder
500G
600G
12.5
12.5
12.5
12.5
9
12
5
6
½
600G
12
23
52
images per
12
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