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User's Manual
Appendix B: Record Duration
The record duration relates to recording rate, image quality and HDD capacity. Refer to the
following table.
NOTE: Record duration times are based on actual tests and represent average
file sizes. Performance may vary depending on specific installations and use.
Audio recording requires 8 KB per second (or 0.7 GB per day) for data storage.
Number of Days of Recording 720 x 480 @ 25 PPS (without Audio)--PAL
Recording
Rate
Number of
Total Images
Cameras
Per Second
PAL
160 GB Internal Storage
25
16
25
8
16
4
300 GB Internal Storage
25
16
25
8
16
4
600 GB Internal Storage
25
16
25
8
16
4
Recording
Mode
512K
256K
bpsDSL
bpsDSL
PAL
PAL
(4 KB)
(3 KB)
(Max to 4
(Max to 4
PPS)
PPS)
18.5
24.6
18.5
24.6
28.9
38.6
34.7
46.1
34.7
46.1
54.3
72.3
69.4
92.3
69.4
92.3
108.5
144.7
40
Recording
Rate
128K
bpsDSL
Total Images
Per Second
PAL
(2 KB)
PAL
(Max to 4
PPS)
37
25
37
12.5
57.9
6.25
69.4
25
69.4
12.5
108.5
6.25
138.8
25
138.8
12.5
217
6.25
Recording
Mode
Extended
Standard
Record
PAL
PAL
(6 KB)
(18 KB)
12.3
4.1
24.6
8.2
49.2
16.4
23.1
7.7
46.1
15.4
92.3
30.8
46.1
15.4
92.3
30.8
184.5
61.5
VDR840C-440C_En_V1.2
Best
Quality
PAL
(30 KB)
2.5
4.9
9.8
4.6
9.2
18.5
9.2
18.5
36.9
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