OCB OCB-DVR404DB - HDD Capacity Calculation

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Chapter Ⅵ Specification
Model
4CH
processor
Embedded high performance processor
operation system
embedded RTOS
Video
Video format
PAL/NTSC
image compression
H.264(Main Profile)/MJPEG
Video input
4 Channel BNC(1.0Vp-p,75Ω)
Video output
1 Channel BNC (1.0Vp-p,75Ω)
1 Channel VGA（800×600，1024×768，1280×1024 ）(optional)
Audio
audio compression
ADPCM
Audio input
4CH BNC(linear voltage,10.0 KΩ )（or 3CH Audio + 1 CH Intercom）
Audio output
1CH BNC(linear voltage,1.0 KΩ)
Intercom
support intercom
Display
resolution
D1：704×576(PAL) 704×480 (NTSC)
frame rate
25（PAL）/30（NTSC）FPS
division
1; 4CH
Record
resolution
CIF：352×288(PAL) 352×240 (NTSC)
image frame
25(PAL)/30(NTSC) FPS，adjustable
image quality
5 levels(basic, medium, good, high, best)
Recording mode
Manual, auto motion detection (support 396 grid blocks) , timing ,alarming trigger,
auto start ,pre-recording.
video output stream
64K-2Mbps adjustable
play back
4CH playback simultaneously
HDD
interface
1 SATA interface, Max. 2T/HDD
Alarm