DVR board specification: 

1.Chipset: Techwell 6802B

    10 bit video ADC with 4H filter and color correction and AGC function

    10 bit audio ADC; 8 or 16 sampling output and the sampling frequency and GAIN can been adjusted.

2.Video input : 4 channels(DB25 connection lines)

3.Audio input : 4 channels(DB25 connection lines)

4.Video resources:

    PAL: 100 frames with All D1; 200 frames with Half D1/CIF

    NTSC: 120 frames with All D1; 240 frames with Half D1/CIF

5.Video sampling resolution:

    PAL:  Half D1 (704x288) / CIF (352x288) / Half VGA: 640 x 240 / QVGA (320x240)

    NTSC: Half D1 (704x240) / CIF (352x240) / Half VGA: 640 x 240 / QVGA (320x240)

6.Video display output:

    VGA  preview display (whole screen or picture division) 

    TV output monitors screening (option, more channels patrol in turn)

7.Compression ways:

    H.264 / MPEG 4 / WMV3 compression formats for selection; outside hangs CODEC user-defined compression format as well.

8.Storage mode:

    HV codes stream (can play together with J8000 hardware card format and can choose AVI document mode (the biggest single doc. is 2G)                        

9.Alarm input/output:

    20-bit input/output are matchable with GPIO trigger mode and Alarm may take another card or alarm boxes                                                                        

10.Cradle head / Vidicon control:

Each channel can process the control of cradle head/DV, support many protocols.

11.Long-distance transmit:

    The client-side and IE-side can monitor 32 channels in long-distance, control cradle head/DV in long-distance as well, supporting voice talkback.

12.Network:

    Support TCP/IP and UDP transmit, support many network accesses such as PSTN/ISDN/DDN/ADSL/LAN

Hardware platform and operating system:

    Intel845/848/865/915/945/965 chips; C4 above 2.0G; 32 or 64 bit CPU; dicaryon or double dicaryon is better. (24 channels CIF in real-time need P4 3.0G or dicaryon above 2.8G)

Windows 2000/XP/2003 operating systems; Linux operating system (Kernel 2.4.x or 2.6.x)

The basic function of the software:

1)The function of the software is powerful; the single machine can kinescope and preview 36 channels Video.

2)Datetime and each Vidicon can searches in time apart.

3)Can add OSD/LOGO, can accomplish the camera function( JPG/BMP)

4)Moving sense Vidicon and give an alarm(external access to box of give  an alarm/voice/email/short message)

5)Many kinescope mode: dynamic kinescope, sense kinescope, timing kinescope and continual kinescope.

6)Several external controls: cradle- head, Vidicon, electrical source, rain bush and focalize camera lens.

7)Set up several clients purview management, support set up user operating purview.

8)Can accomplish several channels of IE preview and control, and supply power function of operating system for client-side