DAHUA HD CVI DVR

 

What is HDCVI Camera?

What is HDCVI Camera

 

 

What's the HDCVI camera? To answer this question, you need to know what the HDCVI, the HDCVI is the abbreviation of High Definition Composite Video Interface (HDCVI), which is one of recent technologies for offering high definition solution to analog surveillance system (CCTV). HDCVI is a video transmission technology in high definition via coaxial cable, allowing reliable long-distance HD transmission at lower cost, while complex deployment is applicable. HDCVI modulates video signal to level and then transmit by adopting base-band and quadrature amplitude modulation; which is also the reason of its naming. This technology avoids the cross talk of CVBS and completely separates the brightness signal and hue signal, hence further enhances video quality. HDCVI offers two specifications — 1920H (1920×1080) and 1280H (1280×720); which are compatible with the industrial standard 1080p(1920×1080) and 720p(1920×1080).

 

 HDCVI Camera

What's the difference between HDCVI and traditional analog camera? As we know, traditional analog camera utilizes CCD image sensor to capture images, which comes with interlaced scan, its highest resolution is 960H (960x480, or 960x576). In order to compete with IP camera, some manufacturers developed analog camera which is based on progressive scan CMOS image sensor, hence to deliver megapixel resolution images (720p & 1080p).

Interlaced scan vs progressive scan

What differentiates a progressive scan from an interlaced scan is that the progressive scans system draws every line on the screen in just one pass, rather than in two passes.

  • Disadvantages of interlaced scan: Image artifacts, Intentional image blurring, Improper reproduction of finer details, Image flickering (This flickering is also called “interline twitter” and is caused by the image on the screen containing vertical detail that approaches the horizontal resolution of the video format.)
  • The advantages of progressive scan: No image artifacts, No blurring, Higher vertical resolution, Higher quality images (Images are smoother are more detailed in progressive scan as they are refreshed at a faster frequency.)

Back to 2014, HDCVI, HDTVI, HDAHD (or AHD) technologies were released by different manufacturers. End-users are happy to embrace these new technologies, because they give them the chance to upgrade existing standard surveillance system to HD analog system. Unfortunately, some users like me feel overwhelmed, because they are too similar on both features and price. Which one is the best? In my humble opinion, there is no best one, each technology has its unique advantage, but all of resolution (image performance) keep same without significant difference.

 

HDCVI advantage

 

Let's continue introducing the HDCVI technology, HDCVI features a patent named auto signal compensation (ASC), which only allows an extremely low signal distortion along long-distance transmission. HDCVI solution incorporates both cameras and DVRs, and the system is star topology structured; DVR is served as a node to have an over coax P2P (Point-to-Point) transmission to camera. Cable selection is based on transmission distance: cable 75-3 and 75-5 are recommended for transmission within 500 meters, cable 75-5 and above for over 500 meters. Connector or jointing technology could be applied for connecting and the installation is exactly the same as that of conventional analog devices, which posts no special requirements either for indoor or outdoor scenarios with better anti-interference capability offered.

HDCVI Camera

To further realize multiple-signal transmission over one cable, both audio signal and dual-way data communication signal are embedded in a blanking zone; which enhances the synchronization with video signal; and max supports 44.1kHz sampling rate thanks to ASC. The forward and reverse data channels composite in the frame blanking zone, realizing a two-way end-to-end transmission to support control commands such as camera focus, PTZ control, real-time alarm and etc. The forward outputting data supports high transmission baud rate as the sending time and electric signal baud rate are predictable, meanwhile,  the receiving end is of high ASC performance;

DAHUA HDCVI

on the other hand, the reverse outputting data supports lower baud rate due to its low signal frequency and limited data, which is elected by the impedance matching. However, with ASC adopted, the reverse channel could restore electric signal during long-distance transmission at some degree.Therefore, HDCVI is an optimal solution for megapixel high definition application, featuring non-latent long-distance transmission at lower cost.


Items 1 to 10 of 127 total

per page
Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Set Ascending Direction
  1. HCVR7404L - DAHUA HCVR7404L 4CH Tribrid 1080P 1.5U HDCVI DVR HCVR7404L without logo

    HCVR7404L - DAHUA HCVR7404L 4CH Tribrid 1080P 1.5U HDCVI DVR HCVR7404L without logo

    $389.00

    >Tribrid: Each channel supports HDCVI/Analog/IP Video input
    >1HDMI/VGA/TV simultaneous video output,1 HDMI separate output
    >HCVR7404/7408/7416L:All channel 1080P realtime recording
    >H.264 dual-stream video compression
    >4/8 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ dome camera
    >Support 4 SATA HDDs up to 16TB, 1 eSATA, 3 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA
     

    The delivery time is about 25 working days if no stock.

    Learn More
  2. DAHUA HCVR7408L

    HCVR7408L - DAHUA HCVR7408L 8CH Tribrid 1080P 1.5U HDCVI DVR HCVR7408L without logo

    $455.00

    >Tribrid: Each channel supports HDCVI/Analog/IP Video input
    >1HDMI/VGA/TV simultaneous video output,1 HDMI separate output
    >HCVR7404/7408/7416L:All channel 1080P realtime recording
    >H.264 dual-stream video compression
    >4/8 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ dome camera
    >Support 4 SATA HDDs up to 16TB, 1 eSATA, 3 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA


     

    The delivery time is about 25 working days if no stock.

    Learn More
  3. HCVR7416L - DAHUA HCVR7416L 16CH Tribrid 1080P 1.5U HDCVI DVR HCVR7416L without logo

    HCVR7416L - DAHUA HCVR7416L 16CH Tribrid 1080P 1.5U HDCVI DVR HCVR7416L without logo

    $636.00

    >Tribrid: Each channel supports HDCVI/Analog/IP Video input
    >1HDMI/VGA/TV simultaneous video output,1 HDMI separate output
    >HCVR7404/7408/7416L:All channel 1080P realtime recording
    >H.264 dual-stream video compression
    >4/8 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ dome camera
    >Support 4 SATA HDDs up to 16TB, 1 eSATA, 3 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA
     

    The delivery time is about 25 working days if no stock.

    Learn More
  4. DAHUA HCVR7804S

    HCVR7804S - DAHUA HCVR7804S 4CH Tribrid 1080P 2U HDCVI DVR HCVR7804S without logo

    $438.00

    >Tribrid: Each channel supports HDCVI/Analog/IP Video input
    >1HDMI/VGA/TV simultaneous video output,1 HDMI separate output
    >HCVR7804/7808/7816S:All channel 1080P realtime recording
    >H.264 dual-stream video compression
    >4/8 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ camera
    >Support 8 SATA HDDs up to 32TB, 1 eSATA, 4 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA

    The delivery time is about 25 working days if no stock.

    Learn More
  5. DAHUA HCVR7816S

    HCVR7808S - DAHUA HCVR7808S 8CH Tribrid 1080P 2U HDCVI DVR HCVR7808S without logo

    $502.00

    >Tribrid: Each channel supports HDCVI/Analog/IP Video input
    >1HDMI/VGA/TV simultaneous video output,1 HDMI separate output
    >HCVR7804/7808/7816S:All channel 1080P realtime recording
    >H.264 dual-stream video compression
    >4/8 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ camera
    >Support 8 SATA HDDs up to 32TB, 1 eSATA, 4 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA

    The delivery time is about 25 working days if no stock.

    Learn More
  6. DAHUA HCVR5432L-S2

    HCVR5432L-S2 - DAHUA HCVR5432L-S2 32CH 720P-Pro 1.5U HDCVI DVR HCVR5432L-S2 without logo

    $688.00

    >Tribrid: Each channel supports Analog/HDCVI/IP Video input
    >H.264 dual-stream video compression
    >HCVR5424/5432L-S2: All channel 720P realtime recording or 1080P non-realtime recording
    >2HDMI/VGA/TV simultaneous video output
    >16 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ dome camera
    >Support 4 SATA HDDs up to 16TB, 1 eSATA, 3 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA
     

    The delivery time is about 25 working days if no stock.

    Learn More
  7.  DAHUA HCVR5424L-S2

    HCVR5424L-S2 - DAHUA HCVR5424L-S2 24CH 720P-Pro 1.5U HDCVI DVR HCVR5424L-S2 without logo

    $668.00

    >Tribrid: Each channel supports Analog/HDCVI/IP Video input
    >H.264 dual-stream video compression
    >HCVR5424/5432L-S2: All channel 720P realtime recording or 1080P non-realtime recording
    >2HDMI/VGA/TV simultaneous video output
    >16 channel synchronous realtime playback, GRID interface & smart search
    >Support Multi-brand network cameras: Dahua, Arecont Vision, AXIS, Bosch, Brickcom, Canon, CP Plus, Dynacolor, Honeywell, Panasonic, Pelco, Samsung, Sanyo, Sony, Videosec, Vivotek and etc.
    >ONVIF Version 2.4 conformance
    >3D intelligent positioning with Dahua PTZ dome camera
    >Support 4 SATA HDDs up to 16TB, 1 eSATA, 3 USB2.0
    >Multiple network monitoring: Web viewer, CMS(DSS/Smart PSS)&Smart Phone(DMSS)

    >without Logo,English firmware
    >100% original products manufactured by DAHUA
     

    The delivery time is about 25 working days if no stock.

    Learn More
  8. DAHUA XVR7104HE

    DAHUA XVR7104HE- DAHUA XVR7104HE 4CH Penta-brid 1080P Mini 1U Digital Video Recorder XVR7104HE without logo

    $105.00

    XVR7104/08/16HE Character

    4/8/16 Channel Penta-brid 1080P Mini 1U Digital Video Recorder

    >H.264+/H.264 dual-stream video compression
    >Support HDCVI/AHD/TVI/CVBS/IP video inputs

    >without Logo,English firmware
    >100% original products manufactured by DAHUA

    The delivery time is about 25 working days if no stock.


    Download

    HDCVR Users Manual

    Drawings

    XVR7108HE-S3_Rear Panel_20160926

    XVR7104HE-S3_Rear Panel_20160926

    XVR7116HE-S3_Rear Panel_20160926

    XVR7104 7108 7116HE-S3__Dimension_20160926

    Save

    Save

    Learn More
  9. DAHUA XVR7108HE

    DAHUA XVR7108HE- DAHUA XVR7108HE 8CH Penta-brid 1080P Mini 1U Digital Video Recorder XVR7108HE without logo

    $129.00

    XVR7104/08/16HE Character

    4/8/16 Channel Penta-brid 1080P Mini 1U Digital Video Recorder

    >H.264+/H.264 dual-stream video compression
    >Support HDCVI/AHD/TVI/CVBS/IP video inputs

    >without Logo,English firmware
    >100% original products manufactured by DAHUA

    The delivery time is about 25 working days if no stock.


    Download

    HDCVR Users Manual

    Drawings

    XVR7108HE-S3_Rear Panel_20160926

    XVR7104HE-S3_Rear Panel_20160926

    XVR7116HE-S3_Rear Panel_20160926

    XVR7104 7108 7116HE-S3__Dimension_20160926

    Save

    Save

    Save

    Learn More
  10. DAHUA XVR7108HE

    DAHUA XVR7116HE- DAHUA XVR7116HE 16CH Penta-brid 1080P Mini 1U Digital Video Recorder XVR7116HE without logo

    $208.00

    XVR7104/08/16HE Character

    4/8/16 Channel Penta-brid 1080P Mini 1U Digital Video Recorder

    >H.264+/H.264 dual-stream video compression
    >Support HDCVI/AHD/TVI/CVBS/IP video inputs

    >without Logo,English firmware
    >100% original products manufactured by DAHUA

    The delivery time is about 25 working days if no stock.


    Download

    HDCVR Users Manual

    Drawings

    XVR7108HE-S3_Rear Panel_20160926

    XVR7104HE-S3_Rear Panel_20160926

    XVR7116HE-S3_Rear Panel_20160926

    XVR7104 7108 7116HE-S3__Dimension_20160926

    Save

    Save

    Save

    Learn More

Items 1 to 10 of 127 total

per page
Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Set Ascending Direction