Technical Guidelines:
1. Parameters of video
Video input: PAL, NTSC (BNC port, 1VP-P, 75ohm)
Video output: PAL, NTSC A composite video output(BNC port, 1VP-P, 75ohm)
One VGA output(frequency: 60HZ, resolution ratio: 1024*768)
2. Parameters of audio
Audio input: 16 channels audio input(BNC port, 10Kohm, Vp-p=2.0V LINE)
Audio output: An audio output(BNC port, 10Kohm, Vp-p=2.0V LINE)
3. Compression arithmetic: Video compression H. 264 CIF (PAL 352*288 NTSC 352*240; Audio compression G. 722
4. Image resolution ratio: Real-time display (PAL 704*576 NTSC 704*480), VGA display (1024*768)
5. Audio sampling ratio: 8K sampling point per second, 16 bit per sampling point
6. Operating system: Embedded real-time operating system (RTOS)
7. Hard Disk: Support 2*SATA
8. Alarm ports: Alarm input: 16 alarm input/Alarm output: 2 alarm output
9. IO port: RS-485/RS-232; RS-485 supports transparency channel which can be used to control device by network
PS/2 interface for keyboard and mouse; Support to connect serial keyboard
10. Backup: USB 2.0 port for backup.
11. Network port: Adaptive Ethernet port of 10M/100M
12. Power supply: 220 V, 50 HZ, 110 V, 60 HZ
13. Size: 405 X 310 X 55 (mm)

Compress Function:
1. Support PAL/NTSC4.43/NTSC3.58 video signals
2. The video compression is H. 264, supports VBR as well as CBR, selectable video picture quality
3. Separatedly compress each audio and video signal stream, the compressed audio standard adopts G. 722
4. Compound H. 264 is produced after compressing video and audio signals, the video and audio keep moving simultaneously and can set up no audio record when playback
5.6 kinds of record image quality for choosing, users can select video quality according to the special need.

Network Function:
1. Support TCP/IP agreement (support ARP, RARP, IP, TCP, PPPOE, DHCP, etc. )
2. Support PPPOE, dial automatically again at the same time and support domain name mapping.
3. Complete controlling functions from remote client or IE browse to set up parameter through network, look around monitor scenes of any or 8-channel video signals in real time.
4. Embedded multiple communication protocols, can control PTZ in the end of the host computer and control PTZ, scene and rain brush through network
5. Update through network and achieve through network to help user maintenance.

Record Function:
1. Support: Manual video, timing video, motion detection and warning video, support the categorized search of video.
2. Motion detection function: Each video can set up multiple dynamic measuring areas, support full screen shielding
3. Warning record video supports single way or multi-way record individually
4. Support 16 channels recording to PC through network, each video parameter can set up alone
5. Support the titles, recording times and dates adding

Playback Function:
1. Local playback: Accurate time playback, search playback the contents of manual video, timing video, motion detection video and warning video
2. Support picture in picture playback, remote monitoring has no effect on recording.
3. Support the playback modes of 4 ranks of speeding, slowing, playback, pausing, forwarding.

Monitor in Real Time Function:
1. Support the local monitor and local VGA, support TV wall function.
2. Support the regulation of each video parameter (luminance, contrast rate, color, degree of saturation)
3. Show the mode switch (1/4/9/16 windows) rapidly, not delayed. Support the picture poll with given interval.
4. Video motion detection function, No. 4 machine can set up 140 dynamic measuring areas,
5. Support the video playback and in real time monitor at the same time

Storing and Backup Function:
1. Provides USB 2.0 backup interface on front and back of DVR for hard disk, CD-R or DVD-R, supports backup through network