Appendix C: Record Duration - Speco DVR-4TH User Manual

Appendix C: Record Duration

The record duration relates to recording rate, image quality, HDD capacity, and event
settings. The following tables give sample calculation of record duration according to
different recording rate, image quality, and HDD capacity, excluding consideration of events,
for different models with different recording mode. The recording quality refers to the
Normal Qlty setting of <Per Camera Config> in <Record Setting>, assuming all channel
are set to the same quality at all times.
Cameral Select
Normal PPS
Normal Qlty
Event Max PPS
Event Qlty
Event Act
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.
Please refer to our recording time calculator on the Speco website for other possible
calculations. http://www.Specotech.com
Refer to the following tables for estimated recording duration of different record modes.
Record Duration (Days): Full-D1, Global [Day, Night, Weekend] (without Audio)
Recording Rate
Total PPS of all
Channels
NTSC
NTSC PAL (8 KB) (8 KB) (12 KB) (12 KB) (16 KB) (16 KB) (20 KB) (20 KB) (24 KB) (24 KB)
160 GB Internal Storage
30 25 10.52
15 12.5 21.04
7.5 6.25 42.09
320 GB Internal Storage
30 25 21.56
15 12.5 43.12
7.5 6.25 86.25 103.49 39.24
DVR-4TH/8TH/16TH Series
SPECO TECHNOLOGIES 01/09
Per Camera Config
Low Fair
PAL NTSC PAL
12.63 4.79 5.74
25.25 9.57 11.49
50.50 19.15 22.98
25.87 9.81 11.77
51.75 19.62 23.55
47.09
Day Night
7.5 7.5
Mid Mid
30 30
Best Best
Both Both
Support Tools
Recording Quality Mode
Mid
NTSC PAL
276 3.31
5.52 6.62
11.03 13.24
5.65 6.78
11.31 13.57
22.61 27.14
User's Manual
CH1
Weekend
7.5
Mid
30
Best
Both
High
NTSC PAL NTSC
1.81 2.17 1.29
3.62 4.34 2.58
7.24 8.69 5.16
3.71 4.45 2.64
7.42 8.90 5.28
14.83 17.80 10.57
Best
PAL
1.55
3.09
6.19
3.17
6.34
12.68
145