Provision-ISR SA-8200SDI-E Uživatelský manuál stáhnout pdf (Strana 118)

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Digital Video Recorder User Manual

Appendix BCalculate Recording Capacity

Users can calculate the size of hard disk according to the saving time and DVR recording settings. The DVR uses fixed video bit

rate. The below are the details at different settings.

Video Format Resolution

Frame Rate

Totally(FPS)

Video Quality Bit Rate(kbps) Used Space(MB/h)

NTSC CIF 30

Highest

465

Higher

768k

297

Medium

512k

230

Low

384k

173

Lower

256k

115

Lowest

128k

PAL CIF 25

Highest

466

Higher

768k

295

Medium

512k

235

Low

384k

175

Lower

256k

112

Lowest

128k

56.4

The calculation format is: Total Recording capacity =Usedspace perhour (MB/h) (coverage rate of hard disk) × recording

time (hour) ×channel numbers (D1 resolution uses 4 times more space then CIF resolution)

For instance, one customer uses PAL cameras, set resolution to CIF, video quality toLowest, frame rate to 25fps for enabling total

16 channels. He wants the unit to record continuously in a month. Below is the calculation:

Total Recoding capacity =56.4(mb/h) X 24(hours/day) X30(days) X16(channels)= 649728(MB)

≈650(GB)

Therefore, customers just install two SATA HDDs with 320GB, it can almost record for one month.

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