Net DVR DVR7004 - Chapter 2: Technology Guideline and Main Functions; Technology Guideline

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Net DVR
Chapter 2 Technology Guideline and Main Functions
2.1 Technology Guideline
1. Video parameters
Video input: composite video input PAL(25 fps) NTSC (30 fps ) (BNC ,1Vp-p ,75 Ω)
Video output: 1 channel composite video output(BNC,1Vp -p,75 Ω)PAL(625 line/frame)NTSC (525 line/frame)
2. Audio parameters
Audio input: BNC interface, input resistance: 10K Ω,input extent: Vp-p=2.0VLINE
Audio output:BNC interface, input resistance: 10K Ω,input extent: Vp-p=2.0VLINE
Voice chat:Input (3.5MM interface,input resistance: 10K Ω, input extent: Vp-p=2.0VLINEin/50mVMICin)
3. Video compression: Compression arithmetic H.264,Resolution CIF: PAL(352x288) 25FPS; NTSC(352x240)30FPS
4. Audio Compression: Compression arithmetic G.711A,Audio sampling rate 8K sample/sec., 16 bit/sample
5. Operation System: Real Time Operation System(RTOS)
6. HDD interface: 1SATA interfaces support 48bit LBA working mode
7.Alarm interface
Alarm input: Alarm input support normal on/off
Alarm output: 2 channels alarm output (Normal on, relay output)
8. Series interface:RS485 and RX ,support network transparent connection,support serial keyboard
9. Operation mode: multi-functional IR remote control, USB mouse,serial keyboard,front panel.